node_modules ignore

server/node_modules/cropperjs/src/css/cropper.css

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+.cropper-container {
+  direction: ltr;
+  font-size: 0;
+  line-height: 0;
+  position: relative;
+  touch-action: none;
+  user-select: none;
+
+  & img {
+    backface-visibility: hidden;
+    display: block;
+    height: 100%;
+    image-orientation: 0deg;
+    max-height: none !important;
+    max-width: none !important;
+    min-height: 0 !important;
+    min-width: 0 !important;
+    width: 100%;
+  }
+}
+
+.cropper-wrap-box,
+.cropper-canvas,
+.cropper-drag-box,
+.cropper-crop-box,
+.cropper-modal {
+  bottom: 0;
+  left: 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+}
+
+.cropper-wrap-box,
+.cropper-canvas {
+  overflow: hidden;
+}
+
+.cropper-drag-box {
+  background-color: #fff;
+  opacity: 0;
+}
+
+.cropper-modal {
+  background-color: #000;
+  opacity: 0.5;
+}
+
+.cropper-view-box {
+  display: block;
+  height: 100%;
+  outline: 1px solid #39f;
+  outline-color: rgba(51, 153, 255, 0.75);
+  overflow: hidden;
+  width: 100%;
+}
+
+.cropper-dashed {
+  border: 0 dashed #eee;
+  display: block;
+  opacity: 0.5;
+  position: absolute;
+
+  &.dashed-h {
+    border-bottom-width: 1px;
+    border-top-width: 1px;
+    height: calc(100% / 3);
+    left: 0;
+    top: calc(100% / 3);
+    width: 100%;
+  }
+
+  &.dashed-v {
+    border-left-width: 1px;
+    border-right-width: 1px;
+    height: 100%;
+    left: calc(100% / 3);
+    top: 0;
+    width: calc(100% / 3);
+  }
+}
+
+.cropper-center {
+  display: block;
+  height: 0;
+  left: 50%;
+  opacity: 0.75;
+  position: absolute;
+  top: 50%;
+  width: 0;
+
+  &::before,
+  &::after {
+    background-color: #eee;
+    content: ' ';
+    display: block;
+    position: absolute;
+  }
+
+  &::before {
+    height: 1px;
+    left: -3px;
+    top: 0;
+    width: 7px;
+  }
+
+  &::after {
+    height: 7px;
+    left: 0;
+    top: -3px;
+    width: 1px;
+  }
+}
+
+.cropper-face,
+.cropper-line,
+.cropper-point {
+  display: block;
+  height: 100%;
+  opacity: 0.1;
+  position: absolute;
+  width: 100%;
+}
+
+.cropper-face {
+  background-color: #fff;
+  left: 0;
+  top: 0;
+}
+
+.cropper-line {
+  background-color: #39f;
+
+  &.line-e {
+    cursor: ew-resize;
+    right: -3px;
+    top: 0;
+    width: 5px;
+  }
+
+  &.line-n {
+    cursor: ns-resize;
+    height: 5px;
+    left: 0;
+    top: -3px;
+  }
+
+  &.line-w {
+    cursor: ew-resize;
+    left: -3px;
+    top: 0;
+    width: 5px;
+  }
+
+  &.line-s {
+    bottom: -3px;
+    cursor: ns-resize;
+    height: 5px;
+    left: 0;
+  }
+}
+
+.cropper-point {
+  background-color: #39f;
+  height: 5px;
+  opacity: 0.75;
+  width: 5px;
+
+  &.point-e {
+    cursor: ew-resize;
+    margin-top: -3px;
+    right: -3px;
+    top: 50%;
+  }
+
+  &.point-n {
+    cursor: ns-resize;
+    left: 50%;
+    margin-left: -3px;
+    top: -3px;
+  }
+
+  &.point-w {
+    cursor: ew-resize;
+    left: -3px;
+    margin-top: -3px;
+    top: 50%;
+  }
+
+  &.point-s {
+    bottom: -3px;
+    cursor: s-resize;
+    left: 50%;
+    margin-left: -3px;
+  }
+
+  &.point-ne {
+    cursor: nesw-resize;
+    right: -3px;
+    top: -3px;
+  }
+
+  &.point-nw {
+    cursor: nwse-resize;
+    left: -3px;
+    top: -3px;
+  }
+
+  &.point-sw {
+    bottom: -3px;
+    cursor: nesw-resize;
+    left: -3px;
+  }
+
+  &.point-se {
+    bottom: -3px;
+    cursor: nwse-resize;
+    height: 20px;
+    opacity: 1;
+    right: -3px;
+    width: 20px;
+
+    @media (min-width: 768px) {
+      height: 15px;
+      width: 15px;
+    }
+
+    @media (min-width: 992px) {
+      height: 10px;
+      width: 10px;
+    }
+
+    @media (min-width: 1200px) {
+      height: 5px;
+      opacity: 0.75;
+      width: 5px;
+    }
+  }
+
+  &.point-se::before {
+    background-color: #39f;
+    bottom: -50%;
+    content: ' ';
+    display: block;
+    height: 200%;
+    opacity: 0;
+    position: absolute;
+    right: -50%;
+    width: 200%;
+  }
+}
+
+.cropper-invisible {
+  opacity: 0;
+}
+
+.cropper-bg {
+  background-image: url('../images/bg.png');
+}
+
+.cropper-hide {
+  display: block;
+  height: 0;
+  position: absolute;
+  width: 0;
+}
+
+.cropper-hidden {
+  display: none !important;
+}
+
+.cropper-move {
+  cursor: move;
+}
+
+.cropper-crop {
+  cursor: crosshair;
+}
+
+.cropper-disabled .cropper-drag-box,
+.cropper-disabled .cropper-face,
+.cropper-disabled .cropper-line,
+.cropper-disabled .cropper-point {
+  cursor: not-allowed;
+}

server/node_modules/cropperjs/src/css/cropper.scss

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+$cropper-image-path: '../images' !default;
+
+.cropper {
+  &-container {
+    direction: ltr;
+    font-size: 0;
+    line-height: 0;
+    position: relative;
+    touch-action: none;
+    user-select: none;
+
+    img {
+      backface-visibility: hidden;
+      display: block;
+      height: 100%;
+      image-orientation: 0deg;
+      max-height: none !important;
+      max-width: none !important;
+      min-height: 0 !important;
+      min-width: 0 !important;
+      width: 100%;
+    }
+  }
+
+  &-wrap-box,
+  &-canvas,
+  &-drag-box,
+  &-crop-box,
+  &-modal {
+    bottom: 0;
+    left: 0;
+    position: absolute;
+    right: 0;
+    top: 0;
+  }
+
+  &-wrap-box,
+  &-canvas {
+    overflow: hidden;
+  }
+
+  &-drag-box {
+    background-color: #fff;
+    opacity: 0;
+  }
+
+  &-modal {
+    background-color: #000;
+    opacity: 0.5;
+  }
+
+  &-view-box {
+    display: block;
+    height: 100%;
+    outline: 1px solid #39f;
+    outline-color: rgba(51, 153, 255, 0.75);
+    overflow: hidden;
+    width: 100%;
+  }
+
+  &-dashed {
+    border: 0 dashed #eee;
+    display: block;
+    opacity: 0.5;
+    position: absolute;
+
+    &.dashed-h {
+      border-bottom-width: 1px;
+      border-top-width: 1px;
+      height: calc(100% / 3);
+      left: 0;
+      top: calc(100% / 3);
+      width: 100%;
+    }
+
+    &.dashed-v {
+      border-left-width: 1px;
+      border-right-width: 1px;
+      height: 100%;
+      left: calc(100% / 3);
+      top: 0;
+      width: calc(100% / 3);
+    }
+  }
+
+  &-center {
+    display: block;
+    height: 0;
+    left: 50%;
+    opacity: 0.75;
+    position: absolute;
+    top: 50%;
+    width: 0;
+
+    &::before,
+    &::after {
+      background-color: #eee;
+      content: ' ';
+      display: block;
+      position: absolute;
+    }
+
+    &::before {
+      height: 1px;
+      left: -3px;
+      top: 0;
+      width: 7px;
+    }
+
+    &::after {
+      height: 7px;
+      left: 0;
+      top: -3px;
+      width: 1px;
+    }
+  }
+
+  &-face,
+  &-line,
+  &-point {
+    display: block;
+    height: 100%;
+    opacity: 0.1;
+    position: absolute;
+    width: 100%;
+  }
+
+  &-face {
+    background-color: #fff;
+    left: 0;
+    top: 0;
+  }
+
+  &-line {
+    background-color: #39f;
+
+    &.line-e {
+      cursor: ew-resize;
+      right: -3px;
+      top: 0;
+      width: 5px;
+    }
+
+    &.line-n {
+      cursor: ns-resize;
+      height: 5px;
+      left: 0;
+      top: -3px;
+    }
+
+    &.line-w {
+      cursor: ew-resize;
+      left: -3px;
+      top: 0;
+      width: 5px;
+    }
+
+    &.line-s {
+      bottom: -3px;
+      cursor: ns-resize;
+      height: 5px;
+      left: 0;
+    }
+  }
+
+  &-point {
+    background-color: #39f;
+    height: 5px;
+    opacity: 0.75;
+    width: 5px;
+
+    &.point-e {
+      cursor: ew-resize;
+      margin-top: -3px;
+      right: -3px;
+      top: 50%;
+    }
+
+    &.point-n {
+      cursor: ns-resize;
+      left: 50%;
+      margin-left: -3px;
+      top: -3px;
+    }
+
+    &.point-w {
+      cursor: ew-resize;
+      left: -3px;
+      margin-top: -3px;
+      top: 50%;
+    }
+
+    &.point-s {
+      bottom: -3px;
+      cursor: s-resize;
+      left: 50%;
+      margin-left: -3px;
+    }
+
+    &.point-ne {
+      cursor: nesw-resize;
+      right: -3px;
+      top: -3px;
+    }
+
+    &.point-nw {
+      cursor: nwse-resize;
+      left: -3px;
+      top: -3px;
+    }
+
+    &.point-sw {
+      bottom: -3px;
+      cursor: nesw-resize;
+      left: -3px;
+    }
+
+    &.point-se {
+      bottom: -3px;
+      cursor: nwse-resize;
+      height: 20px;
+      opacity: 1;
+      right: -3px;
+      width: 20px;
+
+      @media (min-width: 768px) {
+        height: 15px;
+        width: 15px;
+      }
+
+      @media (min-width: 992px) {
+        height: 10px;
+        width: 10px;
+      }
+
+      @media (min-width: 1200px) {
+        height: 5px;
+        opacity: 0.75;
+        width: 5px;
+      }
+    }
+
+    &.point-se::before {
+      background-color: #39f;
+      bottom: -50%;
+      content: ' ';
+      display: block;
+      height: 200%;
+      opacity: 0;
+      position: absolute;
+      right: -50%;
+      width: 200%;
+    }
+  }
+
+  &-invisible {
+    opacity: 0;
+  }
+
+  &-bg {
+    background-image: url('#{$cropper-image-path}/bg.png');
+  }
+
+  &-hide {
+    display: block;
+    height: 0;
+    position: absolute;
+    width: 0;
+  }
+
+  &-hidden {
+    display: none !important;
+  }
+
+  &-move {
+    cursor: move;
+  }
+
+  &-crop {
+    cursor: crosshair;
+  }
+
+  &-disabled &-drag-box,
+  &-disabled &-face,
+  &-disabled &-line,
+  &-disabled &-point {
+    cursor: not-allowed;
+  }
+}

server/node_modules/cropperjs/src/index.css

@@ -0,0 +1 @@
+@import "./css/cropper.css";

server/node_modules/cropperjs/src/index.js

@@ -0,0 +1,3 @@
+import Cropper from './js/cropper';
+
+export default Cropper;

server/node_modules/cropperjs/src/index.scss

@@ -0,0 +1 @@
+@import "./css/cropper";

server/node_modules/cropperjs/src/js/change.js

@@ -0,0 +1,491 @@
+import {
+  ACTION_ALL,
+  ACTION_CROP,
+  ACTION_EAST,
+  ACTION_MOVE,
+  ACTION_NORTH,
+  ACTION_NORTH_EAST,
+  ACTION_NORTH_WEST,
+  ACTION_SOUTH,
+  ACTION_SOUTH_EAST,
+  ACTION_SOUTH_WEST,
+  ACTION_WEST,
+  ACTION_ZOOM,
+  CLASS_HIDDEN,
+} from './constants';
+import {
+  forEach,
+  getMaxZoomRatio,
+  getOffset,
+  removeClass,
+} from './utilities';
+
+export default {
+  change(event) {
+    const {
+      options,
+      canvasData,
+      containerData,
+      cropBoxData,
+      pointers,
+    } = this;
+    let { action } = this;
+    let { aspectRatio } = options;
+    let {
+      left,
+      top,
+      width,
+      height,
+    } = cropBoxData;
+    const right = left + width;
+    const bottom = top + height;
+    let minLeft = 0;
+    let minTop = 0;
+    let maxWidth = containerData.width;
+    let maxHeight = containerData.height;
+    let renderable = true;
+    let offset;
+
+    // Locking aspect ratio in "free mode" by holding shift key
+    if (!aspectRatio && event.shiftKey) {
+      aspectRatio = width && height ? width / height : 1;
+    }
+
+    if (this.limited) {
+      ({ minLeft, minTop } = cropBoxData);
+      maxWidth = minLeft + Math.min(
+        containerData.width,
+        canvasData.width,
+        canvasData.left + canvasData.width,
+      );
+      maxHeight = minTop + Math.min(
+        containerData.height,
+        canvasData.height,
+        canvasData.top + canvasData.height,
+      );
+    }
+
+    const pointer = pointers[Object.keys(pointers)[0]];
+    const range = {
+      x: pointer.endX - pointer.startX,
+      y: pointer.endY - pointer.startY,
+    };
+    const check = (side) => {
+      switch (side) {
+        case ACTION_EAST:
+          if (right + range.x > maxWidth) {
+            range.x = maxWidth - right;
+          }
+
+          break;
+
+        case ACTION_WEST:
+          if (left + range.x < minLeft) {
+            range.x = minLeft - left;
+          }
+
+          break;
+
+        case ACTION_NORTH:
+          if (top + range.y < minTop) {
+            range.y = minTop - top;
+          }
+
+          break;
+
+        case ACTION_SOUTH:
+          if (bottom + range.y > maxHeight) {
+            range.y = maxHeight - bottom;
+          }
+
+          break;
+
+        default:
+      }
+    };
+
+    switch (action) {
+      // Move crop box
+      case ACTION_ALL:
+        left += range.x;
+        top += range.y;
+        break;
+
+      // Resize crop box
+      case ACTION_EAST:
+        if (range.x >= 0 && (right >= maxWidth || (aspectRatio
+          && (top <= minTop || bottom >= maxHeight)))) {
+          renderable = false;
+          break;
+        }
+
+        check(ACTION_EAST);
+        width += range.x;
+
+        if (width < 0) {
+          action = ACTION_WEST;
+          width = -width;
+          left -= width;
+        }
+
+        if (aspectRatio) {
+          height = width / aspectRatio;
+          top += (cropBoxData.height - height) / 2;
+        }
+
+        break;
+
+      case ACTION_NORTH:
+        if (range.y <= 0 && (top <= minTop || (aspectRatio
+          && (left <= minLeft || right >= maxWidth)))) {
+          renderable = false;
+          break;
+        }
+
+        check(ACTION_NORTH);
+        height -= range.y;
+        top += range.y;
+
+        if (height < 0) {
+          action = ACTION_SOUTH;
+          height = -height;
+          top -= height;
+        }
+
+        if (aspectRatio) {
+          width = height * aspectRatio;
+          left += (cropBoxData.width - width) / 2;
+        }
+
+        break;
+
+      case ACTION_WEST:
+        if (range.x <= 0 && (left <= minLeft || (aspectRatio
+          && (top <= minTop || bottom >= maxHeight)))) {
+          renderable = false;
+          break;
+        }
+
+        check(ACTION_WEST);
+        width -= range.x;
+        left += range.x;
+
+        if (width < 0) {
+          action = ACTION_EAST;
+          width = -width;
+          left -= width;
+        }
+
+        if (aspectRatio) {
+          height = width / aspectRatio;
+          top += (cropBoxData.height - height) / 2;
+        }
+
+        break;
+
+      case ACTION_SOUTH:
+        if (range.y >= 0 && (bottom >= maxHeight || (aspectRatio
+          && (left <= minLeft || right >= maxWidth)))) {
+          renderable = false;
+          break;
+        }
+
+        check(ACTION_SOUTH);
+        height += range.y;
+
+        if (height < 0) {
+          action = ACTION_NORTH;
+          height = -height;
+          top -= height;
+        }
+
+        if (aspectRatio) {
+          width = height * aspectRatio;
+          left += (cropBoxData.width - width) / 2;
+        }
+
+        break;
+
+      case ACTION_NORTH_EAST:
+        if (aspectRatio) {
+          if (range.y <= 0 && (top <= minTop || right >= maxWidth)) {
+            renderable = false;
+            break;
+          }
+
+          check(ACTION_NORTH);
+          height -= range.y;
+          top += range.y;
+          width = height * aspectRatio;
+        } else {
+          check(ACTION_NORTH);
+          check(ACTION_EAST);
+
+          if (range.x >= 0) {
+            if (right < maxWidth) {
+              width += range.x;
+            } else if (range.y <= 0 && top <= minTop) {
+              renderable = false;
+            }
+          } else {
+            width += range.x;
+          }
+
+          if (range.y <= 0) {
+            if (top > minTop) {
+              height -= range.y;
+              top += range.y;
+            }
+          } else {
+            height -= range.y;
+            top += range.y;
+          }
+        }
+
+        if (width < 0 && height < 0) {
+          action = ACTION_SOUTH_WEST;
+          height = -height;
+          width = -width;
+          top -= height;
+          left -= width;
+        } else if (width < 0) {
+          action = ACTION_NORTH_WEST;
+          width = -width;
+          left -= width;
+        } else if (height < 0) {
+          action = ACTION_SOUTH_EAST;
+          height = -height;
+          top -= height;
+        }
+
+        break;
+
+      case ACTION_NORTH_WEST:
+        if (aspectRatio) {
+          if (range.y <= 0 && (top <= minTop || left <= minLeft)) {
+            renderable = false;
+            break;
+          }
+
+          check(ACTION_NORTH);
+          height -= range.y;
+          top += range.y;
+          width = height * aspectRatio;
+          left += cropBoxData.width - width;
+        } else {
+          check(ACTION_NORTH);
+          check(ACTION_WEST);
+
+          if (range.x <= 0) {
+            if (left > minLeft) {
+              width -= range.x;
+              left += range.x;
+            } else if (range.y <= 0 && top <= minTop) {
+              renderable = false;
+            }
+          } else {
+            width -= range.x;
+            left += range.x;
+          }
+
+          if (range.y <= 0) {
+            if (top > minTop) {
+              height -= range.y;
+              top += range.y;
+            }
+          } else {
+            height -= range.y;
+            top += range.y;
+          }
+        }
+
+        if (width < 0 && height < 0) {
+          action = ACTION_SOUTH_EAST;
+          height = -height;
+          width = -width;
+          top -= height;
+          left -= width;
+        } else if (width < 0) {
+          action = ACTION_NORTH_EAST;
+          width = -width;
+          left -= width;
+        } else if (height < 0) {
+          action = ACTION_SOUTH_WEST;
+          height = -height;
+          top -= height;
+        }
+
+        break;
+
+      case ACTION_SOUTH_WEST:
+        if (aspectRatio) {
+          if (range.x <= 0 && (left <= minLeft || bottom >= maxHeight)) {
+            renderable = false;
+            break;
+          }
+
+          check(ACTION_WEST);
+          width -= range.x;
+          left += range.x;
+          height = width / aspectRatio;
+        } else {
+          check(ACTION_SOUTH);
+          check(ACTION_WEST);
+
+          if (range.x <= 0) {
+            if (left > minLeft) {
+              width -= range.x;
+              left += range.x;
+            } else if (range.y >= 0 && bottom >= maxHeight) {
+              renderable = false;
+            }
+          } else {
+            width -= range.x;
+            left += range.x;
+          }
+
+          if (range.y >= 0) {
+            if (bottom < maxHeight) {
+              height += range.y;
+            }
+          } else {
+            height += range.y;
+          }
+        }
+
+        if (width < 0 && height < 0) {
+          action = ACTION_NORTH_EAST;
+          height = -height;
+          width = -width;
+          top -= height;
+          left -= width;
+        } else if (width < 0) {
+          action = ACTION_SOUTH_EAST;
+          width = -width;
+          left -= width;
+        } else if (height < 0) {
+          action = ACTION_NORTH_WEST;
+          height = -height;
+          top -= height;
+        }
+
+        break;
+
+      case ACTION_SOUTH_EAST:
+        if (aspectRatio) {
+          if (range.x >= 0 && (right >= maxWidth || bottom >= maxHeight)) {
+            renderable = false;
+            break;
+          }
+
+          check(ACTION_EAST);
+          width += range.x;
+          height = width / aspectRatio;
+        } else {
+          check(ACTION_SOUTH);
+          check(ACTION_EAST);
+
+          if (range.x >= 0) {
+            if (right < maxWidth) {
+              width += range.x;
+            } else if (range.y >= 0 && bottom >= maxHeight) {
+              renderable = false;
+            }
+          } else {
+            width += range.x;
+          }
+
+          if (range.y >= 0) {
+            if (bottom < maxHeight) {
+              height += range.y;
+            }
+          } else {
+            height += range.y;
+          }
+        }
+
+        if (width < 0 && height < 0) {
+          action = ACTION_NORTH_WEST;
+          height = -height;
+          width = -width;
+          top -= height;
+          left -= width;
+        } else if (width < 0) {
+          action = ACTION_SOUTH_WEST;
+          width = -width;
+          left -= width;
+        } else if (height < 0) {
+          action = ACTION_NORTH_EAST;
+          height = -height;
+          top -= height;
+        }
+
+        break;
+
+      // Move canvas
+      case ACTION_MOVE:
+        this.move(range.x, range.y);
+        renderable = false;
+        break;
+
+      // Zoom canvas
+      case ACTION_ZOOM:
+        this.zoom(getMaxZoomRatio(pointers), event);
+        renderable = false;
+        break;
+
+      // Create crop box
+      case ACTION_CROP:
+        if (!range.x || !range.y) {
+          renderable = false;
+          break;
+        }
+
+        offset = getOffset(this.cropper);
+        left = pointer.startX - offset.left;
+        top = pointer.startY - offset.top;
+        width = cropBoxData.minWidth;
+        height = cropBoxData.minHeight;
+
+        if (range.x > 0) {
+          action = range.y > 0 ? ACTION_SOUTH_EAST : ACTION_NORTH_EAST;
+        } else if (range.x < 0) {
+          left -= width;
+          action = range.y > 0 ? ACTION_SOUTH_WEST : ACTION_NORTH_WEST;
+        }
+
+        if (range.y < 0) {
+          top -= height;
+        }
+
+        // Show the crop box if is hidden
+        if (!this.cropped) {
+          removeClass(this.cropBox, CLASS_HIDDEN);
+          this.cropped = true;
+
+          if (this.limited) {
+            this.limitCropBox(true, true);
+          }
+        }
+
+        break;
+
+      default:
+    }
+
+    if (renderable) {
+      cropBoxData.width = width;
+      cropBoxData.height = height;
+      cropBoxData.left = left;
+      cropBoxData.top = top;
+      this.action = action;
+      this.renderCropBox();
+    }
+
+    // Override
+    forEach(pointers, (p) => {
+      p.startX = p.endX;
+      p.startY = p.endY;
+    });
+  },
+};

server/node_modules/cropperjs/src/js/constants.js

@@ -0,0 +1,68 @@
+export const IS_BROWSER = typeof window !== 'undefined' && typeof window.document !== 'undefined';
+export const WINDOW = IS_BROWSER ? window : {};
+export const IS_TOUCH_DEVICE = IS_BROWSER && WINDOW.document.documentElement ? 'ontouchstart' in WINDOW.document.documentElement : false;
+export const HAS_POINTER_EVENT = IS_BROWSER ? 'PointerEvent' in WINDOW : false;
+export const NAMESPACE = 'cropper';
+
+// Actions
+export const ACTION_ALL = 'all';
+export const ACTION_CROP = 'crop';
+export const ACTION_MOVE = 'move';
+export const ACTION_ZOOM = 'zoom';
+export const ACTION_EAST = 'e';
+export const ACTION_WEST = 'w';
+export const ACTION_SOUTH = 's';
+export const ACTION_NORTH = 'n';
+export const ACTION_NORTH_EAST = 'ne';
+export const ACTION_NORTH_WEST = 'nw';
+export const ACTION_SOUTH_EAST = 'se';
+export const ACTION_SOUTH_WEST = 'sw';
+
+// Classes
+export const CLASS_CROP = `${NAMESPACE}-crop`;
+export const CLASS_DISABLED = `${NAMESPACE}-disabled`;
+export const CLASS_HIDDEN = `${NAMESPACE}-hidden`;
+export const CLASS_HIDE = `${NAMESPACE}-hide`;
+export const CLASS_INVISIBLE = `${NAMESPACE}-invisible`;
+export const CLASS_MODAL = `${NAMESPACE}-modal`;
+export const CLASS_MOVE = `${NAMESPACE}-move`;
+
+// Data keys
+export const DATA_ACTION = `${NAMESPACE}Action`;
+export const DATA_PREVIEW = `${NAMESPACE}Preview`;
+
+// Drag modes
+export const DRAG_MODE_CROP = 'crop';
+export const DRAG_MODE_MOVE = 'move';
+export const DRAG_MODE_NONE = 'none';
+
+// Events
+export const EVENT_CROP = 'crop';
+export const EVENT_CROP_END = 'cropend';
+export const EVENT_CROP_MOVE = 'cropmove';
+export const EVENT_CROP_START = 'cropstart';
+export const EVENT_DBLCLICK = 'dblclick';
+export const EVENT_TOUCH_START = IS_TOUCH_DEVICE ? 'touchstart' : 'mousedown';
+export const EVENT_TOUCH_MOVE = IS_TOUCH_DEVICE ? 'touchmove' : 'mousemove';
+export const EVENT_TOUCH_END = IS_TOUCH_DEVICE ? 'touchend touchcancel' : 'mouseup';
+export const EVENT_POINTER_DOWN = HAS_POINTER_EVENT ? 'pointerdown' : EVENT_TOUCH_START;
+export const EVENT_POINTER_MOVE = HAS_POINTER_EVENT ? 'pointermove' : EVENT_TOUCH_MOVE;
+export const EVENT_POINTER_UP = HAS_POINTER_EVENT ? 'pointerup pointercancel' : EVENT_TOUCH_END;
+export const EVENT_READY = 'ready';
+export const EVENT_RESIZE = 'resize';
+export const EVENT_WHEEL = 'wheel';
+export const EVENT_ZOOM = 'zoom';
+
+// Mime types
+export const MIME_TYPE_JPEG = 'image/jpeg';
+
+// RegExps
+export const REGEXP_ACTIONS = /^e|w|s|n|se|sw|ne|nw|all|crop|move|zoom$/;
+export const REGEXP_DATA_URL = /^data:/;
+export const REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/;
+export const REGEXP_TAG_NAME = /^img|canvas$/i;
+
+// Misc
+// Inspired by the default width and height of a canvas element.
+export const MIN_CONTAINER_WIDTH = 200;
+export const MIN_CONTAINER_HEIGHT = 100;

server/node_modules/cropperjs/src/js/cropper.js

@@ -0,0 +1,454 @@
+import DEFAULTS from './defaults';
+import TEMPLATE from './template';
+import render from './render';
+import preview from './preview';
+import events from './events';
+import handlers from './handlers';
+import change from './change';
+import methods from './methods';
+import {
+  ACTION_ALL,
+  CLASS_HIDDEN,
+  CLASS_HIDE,
+  CLASS_INVISIBLE,
+  CLASS_MOVE,
+  DATA_ACTION,
+  EVENT_READY,
+  MIME_TYPE_JPEG,
+  NAMESPACE,
+  REGEXP_DATA_URL,
+  REGEXP_DATA_URL_JPEG,
+  REGEXP_TAG_NAME,
+  WINDOW,
+} from './constants';
+import {
+  addClass,
+  addListener,
+  addTimestamp,
+  arrayBufferToDataURL,
+  assign,
+  dataURLToArrayBuffer,
+  dispatchEvent,
+  isCrossOriginURL,
+  isFunction,
+  isPlainObject,
+  parseOrientation,
+  removeClass,
+  resetAndGetOrientation,
+  setData,
+} from './utilities';
+
+const AnotherCropper = WINDOW.Cropper;
+
+class Cropper {
+  /**
+   * Create a new Cropper.
+   * @param {Element} element - The target element for cropping.
+   * @param {Object} [options={}] - The configuration options.
+   */
+  constructor(element, options = {}) {
+    if (!element || !REGEXP_TAG_NAME.test(element.tagName)) {
+      throw new Error('The first argument is required and must be an <img> or <canvas> element.');
+    }
+
+    this.element = element;
+    this.options = assign({}, DEFAULTS, isPlainObject(options) && options);
+    this.cropped = false;
+    this.disabled = false;
+    this.pointers = {};
+    this.ready = false;
+    this.reloading = false;
+    this.replaced = false;
+    this.sized = false;
+    this.sizing = false;
+    this.init();
+  }
+
+  init() {
+    const { element } = this;
+    const tagName = element.tagName.toLowerCase();
+    let url;
+
+    if (element[NAMESPACE]) {
+      return;
+    }
+
+    element[NAMESPACE] = this;
+
+    if (tagName === 'img') {
+      this.isImg = true;
+
+      // e.g.: "img/picture.jpg"
+      url = element.getAttribute('src') || '';
+      this.originalUrl = url;
+
+      // Stop when it's a blank image
+      if (!url) {
+        return;
+      }
+
+      // e.g.: "https://example.com/img/picture.jpg"
+      url = element.src;
+    } else if (tagName === 'canvas' && window.HTMLCanvasElement) {
+      url = element.toDataURL();
+    }
+
+    this.load(url);
+  }
+
+  load(url) {
+    if (!url) {
+      return;
+    }
+
+    this.url = url;
+    this.imageData = {};
+
+    const { element, options } = this;
+
+    if (!options.rotatable && !options.scalable) {
+      options.checkOrientation = false;
+    }
+
+    // Only IE10+ supports Typed Arrays
+    if (!options.checkOrientation || !window.ArrayBuffer) {
+      this.clone();
+      return;
+    }
+
+    // Detect the mime type of the image directly if it is a Data URL
+    if (REGEXP_DATA_URL.test(url)) {
+      // Read ArrayBuffer from Data URL of JPEG images directly for better performance
+      if (REGEXP_DATA_URL_JPEG.test(url)) {
+        this.read(dataURLToArrayBuffer(url));
+      } else {
+        // Only a JPEG image may contains Exif Orientation information,
+        // the rest types of Data URLs are not necessary to check orientation at all.
+        this.clone();
+      }
+
+      return;
+    }
+
+    // 1. Detect the mime type of the image by a XMLHttpRequest.
+    // 2. Load the image as ArrayBuffer for reading orientation if its a JPEG image.
+    const xhr = new XMLHttpRequest();
+    const clone = this.clone.bind(this);
+
+    this.reloading = true;
+    this.xhr = xhr;
+
+    // 1. Cross origin requests are only supported for protocol schemes:
+    // http, https, data, chrome, chrome-extension.
+    // 2. Access to XMLHttpRequest from a Data URL will be blocked by CORS policy
+    // in some browsers as IE11 and Safari.
+    xhr.onabort = clone;
+    xhr.onerror = clone;
+    xhr.ontimeout = clone;
+
+    xhr.onprogress = () => {
+      // Abort the request directly if it not a JPEG image for better performance
+      if (xhr.getResponseHeader('content-type') !== MIME_TYPE_JPEG) {
+        xhr.abort();
+      }
+    };
+
+    xhr.onload = () => {
+      this.read(xhr.response);
+    };
+
+    xhr.onloadend = () => {
+      this.reloading = false;
+      this.xhr = null;
+    };
+
+    // Bust cache when there is a "crossOrigin" property to avoid browser cache error
+    if (options.checkCrossOrigin && isCrossOriginURL(url) && element.crossOrigin) {
+      url = addTimestamp(url);
+    }
+
+    // The third parameter is required for avoiding side-effect (#682)
+    xhr.open('GET', url, true);
+    xhr.responseType = 'arraybuffer';
+    xhr.withCredentials = element.crossOrigin === 'use-credentials';
+    xhr.send();
+  }
+
+  read(arrayBuffer) {
+    const { options, imageData } = this;
+
+    // Reset the orientation value to its default value 1
+    // as some iOS browsers will render image with its orientation
+    const orientation = resetAndGetOrientation(arrayBuffer);
+    let rotate = 0;
+    let scaleX = 1;
+    let scaleY = 1;
+
+    if (orientation > 1) {
+      // Generate a new URL which has the default orientation value
+      this.url = arrayBufferToDataURL(arrayBuffer, MIME_TYPE_JPEG);
+      ({ rotate, scaleX, scaleY } = parseOrientation(orientation));
+    }
+
+    if (options.rotatable) {
+      imageData.rotate = rotate;
+    }
+
+    if (options.scalable) {
+      imageData.scaleX = scaleX;
+      imageData.scaleY = scaleY;
+    }
+
+    this.clone();
+  }
+
+  clone() {
+    const { element, url } = this;
+    let { crossOrigin } = element;
+    let crossOriginUrl = url;
+
+    if (this.options.checkCrossOrigin && isCrossOriginURL(url)) {
+      if (!crossOrigin) {
+        crossOrigin = 'anonymous';
+      }
+
+      // Bust cache when there is not a "crossOrigin" property (#519)
+      crossOriginUrl = addTimestamp(url);
+    }
+
+    this.crossOrigin = crossOrigin;
+    this.crossOriginUrl = crossOriginUrl;
+
+    const image = document.createElement('img');
+
+    if (crossOrigin) {
+      image.crossOrigin = crossOrigin;
+    }
+
+    image.src = crossOriginUrl || url;
+    image.alt = element.alt || 'The image to crop';
+    this.image = image;
+    image.onload = this.start.bind(this);
+    image.onerror = this.stop.bind(this);
+    addClass(image, CLASS_HIDE);
+    element.parentNode.insertBefore(image, element.nextSibling);
+  }
+
+  start() {
+    const { image } = this;
+
+    image.onload = null;
+    image.onerror = null;
+    this.sizing = true;
+
+    // Match all browsers that use WebKit as the layout engine in iOS devices,
+    // such as Safari for iOS, Chrome for iOS, and in-app browsers.
+    const isIOSWebKit = WINDOW.navigator && /(?:iPad|iPhone|iPod).*?AppleWebKit/i.test(WINDOW.navigator.userAgent);
+    const done = (naturalWidth, naturalHeight) => {
+      assign(this.imageData, {
+        naturalWidth,
+        naturalHeight,
+        aspectRatio: naturalWidth / naturalHeight,
+      });
+      this.initialImageData = assign({}, this.imageData);
+      this.sizing = false;
+      this.sized = true;
+      this.build();
+    };
+
+    // Most modern browsers (excepts iOS WebKit)
+    if (image.naturalWidth && !isIOSWebKit) {
+      done(image.naturalWidth, image.naturalHeight);
+      return;
+    }
+
+    const sizingImage = document.createElement('img');
+    const body = document.body || document.documentElement;
+
+    this.sizingImage = sizingImage;
+
+    sizingImage.onload = () => {
+      done(sizingImage.width, sizingImage.height);
+
+      if (!isIOSWebKit) {
+        body.removeChild(sizingImage);
+      }
+    };
+
+    sizingImage.src = image.src;
+
+    // iOS WebKit will convert the image automatically
+    // with its orientation once append it into DOM (#279)
+    if (!isIOSWebKit) {
+      sizingImage.style.cssText = (
+        'left:0;'
+        + 'max-height:none!important;'
+        + 'max-width:none!important;'
+        + 'min-height:0!important;'
+        + 'min-width:0!important;'
+        + 'opacity:0;'
+        + 'position:absolute;'
+        + 'top:0;'
+        + 'z-index:-1;'
+      );
+      body.appendChild(sizingImage);
+    }
+  }
+
+  stop() {
+    const { image } = this;
+
+    image.onload = null;
+    image.onerror = null;
+    image.parentNode.removeChild(image);
+    this.image = null;
+  }
+
+  build() {
+    if (!this.sized || this.ready) {
+      return;
+    }
+
+    const { element, options, image } = this;
+
+    // Create cropper elements
+    const container = element.parentNode;
+    const template = document.createElement('div');
+
+    template.innerHTML = TEMPLATE;
+
+    const cropper = template.querySelector(`.${NAMESPACE}-container`);
+    const canvas = cropper.querySelector(`.${NAMESPACE}-canvas`);
+    const dragBox = cropper.querySelector(`.${NAMESPACE}-drag-box`);
+    const cropBox = cropper.querySelector(`.${NAMESPACE}-crop-box`);
+    const face = cropBox.querySelector(`.${NAMESPACE}-face`);
+
+    this.container = container;
+    this.cropper = cropper;
+    this.canvas = canvas;
+    this.dragBox = dragBox;
+    this.cropBox = cropBox;
+    this.viewBox = cropper.querySelector(`.${NAMESPACE}-view-box`);
+    this.face = face;
+
+    canvas.appendChild(image);
+
+    // Hide the original image
+    addClass(element, CLASS_HIDDEN);
+
+    // Inserts the cropper after to the current image
+    container.insertBefore(cropper, element.nextSibling);
+
+    // Show the hidden image
+    removeClass(image, CLASS_HIDE);
+
+    this.initPreview();
+    this.bind();
+
+    options.initialAspectRatio = Math.max(0, options.initialAspectRatio) || NaN;
+    options.aspectRatio = Math.max(0, options.aspectRatio) || NaN;
+    options.viewMode = Math.max(0, Math.min(3, Math.round(options.viewMode))) || 0;
+
+    addClass(cropBox, CLASS_HIDDEN);
+
+    if (!options.guides) {
+      addClass(cropBox.getElementsByClassName(`${NAMESPACE}-dashed`), CLASS_HIDDEN);
+    }
+
+    if (!options.center) {
+      addClass(cropBox.getElementsByClassName(`${NAMESPACE}-center`), CLASS_HIDDEN);
+    }
+
+    if (options.background) {
+      addClass(cropper, `${NAMESPACE}-bg`);
+    }
+
+    if (!options.highlight) {
+      addClass(face, CLASS_INVISIBLE);
+    }
+
+    if (options.cropBoxMovable) {
+      addClass(face, CLASS_MOVE);
+      setData(face, DATA_ACTION, ACTION_ALL);
+    }
+
+    if (!options.cropBoxResizable) {
+      addClass(cropBox.getElementsByClassName(`${NAMESPACE}-line`), CLASS_HIDDEN);
+      addClass(cropBox.getElementsByClassName(`${NAMESPACE}-point`), CLASS_HIDDEN);
+    }
+
+    this.render();
+    this.ready = true;
+    this.setDragMode(options.dragMode);
+
+    if (options.autoCrop) {
+      this.crop();
+    }
+
+    this.setData(options.data);
+
+    if (isFunction(options.ready)) {
+      addListener(element, EVENT_READY, options.ready, {
+        once: true,
+      });
+    }
+
+    dispatchEvent(element, EVENT_READY);
+  }
+
+  unbuild() {
+    if (!this.ready) {
+      return;
+    }
+
+    this.ready = false;
+    this.unbind();
+    this.resetPreview();
+
+    const { parentNode } = this.cropper;
+
+    if (parentNode) {
+      parentNode.removeChild(this.cropper);
+    }
+
+    removeClass(this.element, CLASS_HIDDEN);
+  }
+
+  uncreate() {
+    if (this.ready) {
+      this.unbuild();
+      this.ready = false;
+      this.cropped = false;
+    } else if (this.sizing) {
+      this.sizingImage.onload = null;
+      this.sizing = false;
+      this.sized = false;
+    } else if (this.reloading) {
+      this.xhr.onabort = null;
+      this.xhr.abort();
+    } else if (this.image) {
+      this.stop();
+    }
+  }
+
+  /**
+   * Get the no conflict cropper class.
+   * @returns {Cropper} The cropper class.
+   */
+  static noConflict() {
+    window.Cropper = AnotherCropper;
+    return Cropper;
+  }
+
+  /**
+   * Change the default options.
+   * @param {Object} options - The new default options.
+   */
+  static setDefaults(options) {
+    assign(DEFAULTS, isPlainObject(options) && options);
+  }
+}
+
+assign(Cropper.prototype, render, preview, events, handlers, change, methods);
+
+export default Cropper;

server/node_modules/cropperjs/src/js/defaults.js

@@ -0,0 +1,104 @@
+import {
+  DRAG_MODE_CROP,
+  MIN_CONTAINER_HEIGHT,
+  MIN_CONTAINER_WIDTH,
+} from './constants';
+
+export default {
+  // Define the view mode of the cropper
+  viewMode: 0, // 0, 1, 2, 3
+
+  // Define the dragging mode of the cropper
+  dragMode: DRAG_MODE_CROP, // 'crop', 'move' or 'none'
+
+  // Define the initial aspect ratio of the crop box
+  initialAspectRatio: NaN,
+
+  // Define the aspect ratio of the crop box
+  aspectRatio: NaN,
+
+  // An object with the previous cropping result data
+  data: null,
+
+  // A selector for adding extra containers to preview
+  preview: '',
+
+  // Re-render the cropper when resize the window
+  responsive: true,
+
+  // Restore the cropped area after resize the window
+  restore: true,
+
+  // Check if the current image is a cross-origin image
+  checkCrossOrigin: true,
+
+  // Check the current image's Exif Orientation information
+  checkOrientation: true,
+
+  // Show the black modal
+  modal: true,
+
+  // Show the dashed lines for guiding
+  guides: true,
+
+  // Show the center indicator for guiding
+  center: true,
+
+  // Show the white modal to highlight the crop box
+  highlight: true,
+
+  // Show the grid background
+  background: true,
+
+  // Enable to crop the image automatically when initialize
+  autoCrop: true,
+
+  // Define the percentage of automatic cropping area when initializes
+  autoCropArea: 0.8,
+
+  // Enable to move the image
+  movable: true,
+
+  // Enable to rotate the image
+  rotatable: true,
+
+  // Enable to scale the image
+  scalable: true,
+
+  // Enable to zoom the image
+  zoomable: true,
+
+  // Enable to zoom the image by dragging touch
+  zoomOnTouch: true,
+
+  // Enable to zoom the image by wheeling mouse
+  zoomOnWheel: true,
+
+  // Define zoom ratio when zoom the image by wheeling mouse
+  wheelZoomRatio: 0.1,
+
+  // Enable to move the crop box
+  cropBoxMovable: true,
+
+  // Enable to resize the crop box
+  cropBoxResizable: true,
+
+  // Toggle drag mode between "crop" and "move" when click twice on the cropper
+  toggleDragModeOnDblclick: true,
+
+  // Size limitation
+  minCanvasWidth: 0,
+  minCanvasHeight: 0,
+  minCropBoxWidth: 0,
+  minCropBoxHeight: 0,
+  minContainerWidth: MIN_CONTAINER_WIDTH,
+  minContainerHeight: MIN_CONTAINER_HEIGHT,
+
+  // Shortcuts of events
+  ready: null,
+  cropstart: null,
+  cropmove: null,
+  cropend: null,
+  crop: null,
+  zoom: null,
+};

server/node_modules/cropperjs/src/js/events.js

@@ -0,0 +1,116 @@
+import {
+  EVENT_CROP,
+  EVENT_CROP_END,
+  EVENT_CROP_MOVE,
+  EVENT_CROP_START,
+  EVENT_DBLCLICK,
+  EVENT_POINTER_DOWN,
+  EVENT_POINTER_MOVE,
+  EVENT_POINTER_UP,
+  EVENT_RESIZE,
+  EVENT_WHEEL,
+  EVENT_ZOOM,
+} from './constants';
+import {
+  addListener,
+  isFunction,
+  removeListener,
+} from './utilities';
+
+export default {
+  bind() {
+    const { element, options, cropper } = this;
+
+    if (isFunction(options.cropstart)) {
+      addListener(element, EVENT_CROP_START, options.cropstart);
+    }
+
+    if (isFunction(options.cropmove)) {
+      addListener(element, EVENT_CROP_MOVE, options.cropmove);
+    }
+
+    if (isFunction(options.cropend)) {
+      addListener(element, EVENT_CROP_END, options.cropend);
+    }
+
+    if (isFunction(options.crop)) {
+      addListener(element, EVENT_CROP, options.crop);
+    }
+
+    if (isFunction(options.zoom)) {
+      addListener(element, EVENT_ZOOM, options.zoom);
+    }
+
+    addListener(cropper, EVENT_POINTER_DOWN, (this.onCropStart = this.cropStart.bind(this)));
+
+    if (options.zoomable && options.zoomOnWheel) {
+      addListener(cropper, EVENT_WHEEL, (this.onWheel = this.wheel.bind(this)), {
+        passive: false,
+        capture: true,
+      });
+    }
+
+    if (options.toggleDragModeOnDblclick) {
+      addListener(cropper, EVENT_DBLCLICK, (this.onDblclick = this.dblclick.bind(this)));
+    }
+
+    addListener(
+      element.ownerDocument,
+      EVENT_POINTER_MOVE,
+      (this.onCropMove = this.cropMove.bind(this)),
+    );
+    addListener(
+      element.ownerDocument,
+      EVENT_POINTER_UP,
+      (this.onCropEnd = this.cropEnd.bind(this)),
+    );
+
+    if (options.responsive) {
+      addListener(window, EVENT_RESIZE, (this.onResize = this.resize.bind(this)));
+    }
+  },
+
+  unbind() {
+    const { element, options, cropper } = this;
+
+    if (isFunction(options.cropstart)) {
+      removeListener(element, EVENT_CROP_START, options.cropstart);
+    }
+
+    if (isFunction(options.cropmove)) {
+      removeListener(element, EVENT_CROP_MOVE, options.cropmove);
+    }
+
+    if (isFunction(options.cropend)) {
+      removeListener(element, EVENT_CROP_END, options.cropend);
+    }
+
+    if (isFunction(options.crop)) {
+      removeListener(element, EVENT_CROP, options.crop);
+    }
+
+    if (isFunction(options.zoom)) {
+      removeListener(element, EVENT_ZOOM, options.zoom);
+    }
+
+    removeListener(cropper, EVENT_POINTER_DOWN, this.onCropStart);
+
+    if (options.zoomable && options.zoomOnWheel) {
+      removeListener(cropper, EVENT_WHEEL, this.onWheel, {
+        passive: false,
+        capture: true,
+      });
+    }
+
+    if (options.toggleDragModeOnDblclick) {
+      removeListener(cropper, EVENT_DBLCLICK, this.onDblclick);
+    }
+
+    removeListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onCropMove);
+    removeListener(element.ownerDocument, EVENT_POINTER_UP, this.onCropEnd);
+
+    if (options.responsive) {
+      removeListener(window, EVENT_RESIZE, this.onResize);
+    }
+  },
+};

server/node_modules/cropperjs/src/js/handlers.js

@@ -0,0 +1,230 @@
+import {
+  ACTION_CROP,
+  ACTION_ZOOM,
+  CLASS_CROP,
+  CLASS_MODAL,
+  DATA_ACTION,
+  DRAG_MODE_CROP,
+  DRAG_MODE_MOVE,
+  DRAG_MODE_NONE,
+  EVENT_CROP_END,
+  EVENT_CROP_MOVE,
+  EVENT_CROP_START,
+  REGEXP_ACTIONS,
+} from './constants';
+import {
+  addClass,
+  assign,
+  dispatchEvent,
+  forEach,
+  getData,
+  getPointer,
+  hasClass,
+  isNumber,
+  toggleClass,
+} from './utilities';
+
+export default {
+  resize() {
+    if (this.disabled) {
+      return;
+    }
+
+    const { options, container, containerData } = this;
+    const ratioX = container.offsetWidth / containerData.width;
+    const ratioY = container.offsetHeight / containerData.height;
+    const ratio = Math.abs(ratioX - 1) > Math.abs(ratioY - 1) ? ratioX : ratioY;
+
+    // Resize when width changed or height changed
+    if (ratio !== 1) {
+      let canvasData;
+      let cropBoxData;
+
+      if (options.restore) {
+        canvasData = this.getCanvasData();
+        cropBoxData = this.getCropBoxData();
+      }
+
+      this.render();
+
+      if (options.restore) {
+        this.setCanvasData(forEach(canvasData, (n, i) => {
+          canvasData[i] = n * ratio;
+        }));
+        this.setCropBoxData(forEach(cropBoxData, (n, i) => {
+          cropBoxData[i] = n * ratio;
+        }));
+      }
+    }
+  },
+
+  dblclick() {
+    if (this.disabled || this.options.dragMode === DRAG_MODE_NONE) {
+      return;
+    }
+
+    this.setDragMode(hasClass(this.dragBox, CLASS_CROP) ? DRAG_MODE_MOVE : DRAG_MODE_CROP);
+  },
+
+  wheel(event) {
+    const ratio = Number(this.options.wheelZoomRatio) || 0.1;
+    let delta = 1;
+
+    if (this.disabled) {
+      return;
+    }
+
+    event.preventDefault();
+
+    // Limit wheel speed to prevent zoom too fast (#21)
+    if (this.wheeling) {
+      return;
+    }
+
+    this.wheeling = true;
+
+    setTimeout(() => {
+      this.wheeling = false;
+    }, 50);
+
+    if (event.deltaY) {
+      delta = event.deltaY > 0 ? 1 : -1;
+    } else if (event.wheelDelta) {
+      delta = -event.wheelDelta / 120;
+    } else if (event.detail) {
+      delta = event.detail > 0 ? 1 : -1;
+    }
+
+    this.zoom(-delta * ratio, event);
+  },
+
+  cropStart(event) {
+    const { buttons, button } = event;
+
+    if (
+      this.disabled
+
+      // Handle mouse event and pointer event and ignore touch event
+      || ((
+        event.type === 'mousedown'
+        || (event.type === 'pointerdown' && event.pointerType === 'mouse')
+      ) && (
+        // No primary button (Usually the left button)
+        (isNumber(buttons) && buttons !== 1)
+        || (isNumber(button) && button !== 0)
+
+        // Open context menu
+        || event.ctrlKey
+      ))
+    ) {
+      return;
+    }
+
+    const { options, pointers } = this;
+    let action;
+
+    if (event.changedTouches) {
+      // Handle touch event
+      forEach(event.changedTouches, (touch) => {
+        pointers[touch.identifier] = getPointer(touch);
+      });
+    } else {
+      // Handle mouse event and pointer event
+      pointers[event.pointerId || 0] = getPointer(event);
+    }
+
+    if (Object.keys(pointers).length > 1 && options.zoomable && options.zoomOnTouch) {
+      action = ACTION_ZOOM;
+    } else {
+      action = getData(event.target, DATA_ACTION);
+    }
+
+    if (!REGEXP_ACTIONS.test(action)) {
+      return;
+    }
+
+    if (dispatchEvent(this.element, EVENT_CROP_START, {
+      originalEvent: event,
+      action,
+    }) === false) {
+      return;
+    }
+
+    // This line is required for preventing page zooming in iOS browsers
+    event.preventDefault();
+
+    this.action = action;
+    this.cropping = false;
+
+    if (action === ACTION_CROP) {
+      this.cropping = true;
+      addClass(this.dragBox, CLASS_MODAL);
+    }
+  },
+
+  cropMove(event) {
+    const { action } = this;
+
+    if (this.disabled || !action) {
+      return;
+    }
+
+    const { pointers } = this;
+
+    event.preventDefault();
+
+    if (dispatchEvent(this.element, EVENT_CROP_MOVE, {
+      originalEvent: event,
+      action,
+    }) === false) {
+      return;
+    }
+
+    if (event.changedTouches) {
+      forEach(event.changedTouches, (touch) => {
+        // The first parameter should not be undefined (#432)
+        assign(pointers[touch.identifier] || {}, getPointer(touch, true));
+      });
+    } else {
+      assign(pointers[event.pointerId || 0] || {}, getPointer(event, true));
+    }
+
+    this.change(event);
+  },
+
+  cropEnd(event) {
+    if (this.disabled) {
+      return;
+    }
+
+    const { action, pointers } = this;
+
+    if (event.changedTouches) {
+      forEach(event.changedTouches, (touch) => {
+        delete pointers[touch.identifier];
+      });
+    } else {
+      delete pointers[event.pointerId || 0];
+    }
+
+    if (!action) {
+      return;
+    }
+
+    event.preventDefault();
+
+    if (!Object.keys(pointers).length) {
+      this.action = '';
+    }
+
+    if (this.cropping) {
+      this.cropping = false;
+      toggleClass(this.dragBox, CLASS_MODAL, this.cropped && this.options.modal);
+    }
+
+    dispatchEvent(this.element, EVENT_CROP_END, {
+      originalEvent: event,
+      action,
+    });
+  },
+};

server/node_modules/cropperjs/src/js/methods.js

@@ -0,0 +1,834 @@
+import {
+  CLASS_CROP,
+  CLASS_DISABLED,
+  CLASS_HIDDEN,
+  CLASS_MODAL,
+  CLASS_MOVE,
+  DATA_ACTION,
+  DRAG_MODE_CROP,
+  DRAG_MODE_MOVE,
+  DRAG_MODE_NONE,
+  EVENT_ZOOM,
+  NAMESPACE,
+} from './constants';
+import {
+  addClass,
+  assign,
+  dispatchEvent,
+  forEach,
+  getAdjustedSizes,
+  getOffset,
+  getPointersCenter,
+  getSourceCanvas,
+  isNumber,
+  isPlainObject,
+  isUndefined,
+  normalizeDecimalNumber,
+  removeClass,
+  setData,
+  toggleClass,
+} from './utilities';
+
+export default {
+  // Show the crop box manually
+  crop() {
+    if (this.ready && !this.cropped && !this.disabled) {
+      this.cropped = true;
+      this.limitCropBox(true, true);
+
+      if (this.options.modal) {
+        addClass(this.dragBox, CLASS_MODAL);
+      }
+
+      removeClass(this.cropBox, CLASS_HIDDEN);
+      this.setCropBoxData(this.initialCropBoxData);
+    }
+
+    return this;
+  },
+
+  // Reset the image and crop box to their initial states
+  reset() {
+    if (this.ready && !this.disabled) {
+      this.imageData = assign({}, this.initialImageData);
+      this.canvasData = assign({}, this.initialCanvasData);
+      this.cropBoxData = assign({}, this.initialCropBoxData);
+      this.renderCanvas();
+
+      if (this.cropped) {
+        this.renderCropBox();
+      }
+    }
+
+    return this;
+  },
+
+  // Clear the crop box
+  clear() {
+    if (this.cropped && !this.disabled) {
+      assign(this.cropBoxData, {
+        left: 0,
+        top: 0,
+        width: 0,
+        height: 0,
+      });
+
+      this.cropped = false;
+      this.renderCropBox();
+      this.limitCanvas(true, true);
+
+      // Render canvas after crop box rendered
+      this.renderCanvas();
+      removeClass(this.dragBox, CLASS_MODAL);
+      addClass(this.cropBox, CLASS_HIDDEN);
+    }
+
+    return this;
+  },
+
+  /**
+   * Replace the image's src and rebuild the cropper
+   * @param {string} url - The new URL.
+   * @param {boolean} [hasSameSize] - Indicate if the new image has the same size as the old one.
+   * @returns {Cropper} this
+   */
+  replace(url, hasSameSize = false) {
+    if (!this.disabled && url) {
+      if (this.isImg) {
+        this.element.src = url;
+      }
+
+      if (hasSameSize) {
+        this.url = url;
+        this.image.src = url;
+
+        if (this.ready) {
+          this.viewBoxImage.src = url;
+
+          forEach(this.previews, (element) => {
+            element.getElementsByTagName('img')[0].src = url;
+          });
+        }
+      } else {
+        if (this.isImg) {
+          this.replaced = true;
+        }
+
+        this.options.data = null;
+        this.uncreate();
+        this.load(url);
+      }
+    }
+
+    return this;
+  },
+
+  // Enable (unfreeze) the cropper
+  enable() {
+    if (this.ready && this.disabled) {
+      this.disabled = false;
+      removeClass(this.cropper, CLASS_DISABLED);
+    }
+
+    return this;
+  },
+
+  // Disable (freeze) the cropper
+  disable() {
+    if (this.ready && !this.disabled) {
+      this.disabled = true;
+      addClass(this.cropper, CLASS_DISABLED);
+    }
+
+    return this;
+  },
+
+  /**
+   * Destroy the cropper and remove the instance from the image
+   * @returns {Cropper} this
+   */
+  destroy() {
+    const { element } = this;
+
+    if (!element[NAMESPACE]) {
+      return this;
+    }
+
+    element[NAMESPACE] = undefined;
+
+    if (this.isImg && this.replaced) {
+      element.src = this.originalUrl;
+    }
+
+    this.uncreate();
+    return this;
+  },
+
+  /**
+   * Move the canvas with relative offsets
+   * @param {number} offsetX - The relative offset distance on the x-axis.
+   * @param {number} [offsetY=offsetX] - The relative offset distance on the y-axis.
+   * @returns {Cropper} this
+   */
+  move(offsetX, offsetY = offsetX) {
+    const { left, top } = this.canvasData;
+
+    return this.moveTo(
+      isUndefined(offsetX) ? offsetX : (left + Number(offsetX)),
+      isUndefined(offsetY) ? offsetY : (top + Number(offsetY)),
+    );
+  },
+
+  /**
+   * Move the canvas to an absolute point
+   * @param {number} x - The x-axis coordinate.
+   * @param {number} [y=x] - The y-axis coordinate.
+   * @returns {Cropper} this
+   */
+  moveTo(x, y = x) {
+    const { canvasData } = this;
+    let changed = false;
+
+    x = Number(x);
+    y = Number(y);
+
+    if (this.ready && !this.disabled && this.options.movable) {
+      if (isNumber(x)) {
+        canvasData.left = x;
+        changed = true;
+      }
+
+      if (isNumber(y)) {
+        canvasData.top = y;
+        changed = true;
+      }
+
+      if (changed) {
+        this.renderCanvas(true);
+      }
+    }
+
+    return this;
+  },
+
+  /**
+   * Zoom the canvas with a relative ratio
+   * @param {number} ratio - The target ratio.
+   * @param {Event} _originalEvent - The original event if any.
+   * @returns {Cropper} this
+   */
+  zoom(ratio, _originalEvent) {
+    const { canvasData } = this;
+
+    ratio = Number(ratio);
+
+    if (ratio < 0) {
+      ratio = 1 / (1 - ratio);
+    } else {
+      ratio = 1 + ratio;
+    }
+
+    return this.zoomTo((canvasData.width * ratio) / canvasData.naturalWidth, null, _originalEvent);
+  },
+
+  /**
+   * Zoom the canvas to an absolute ratio
+   * @param {number} ratio - The target ratio.
+   * @param {Object} pivot - The zoom pivot point coordinate.
+   * @param {Event} _originalEvent - The original event if any.
+   * @returns {Cropper} this
+   */
+  zoomTo(ratio, pivot, _originalEvent) {
+    const { options, canvasData } = this;
+    const {
+      width,
+      height,
+      naturalWidth,
+      naturalHeight,
+    } = canvasData;
+
+    ratio = Number(ratio);
+
+    if (ratio >= 0 && this.ready && !this.disabled && options.zoomable) {
+      const newWidth = naturalWidth * ratio;
+      const newHeight = naturalHeight * ratio;
+
+      if (dispatchEvent(this.element, EVENT_ZOOM, {
+        ratio,
+        oldRatio: width / naturalWidth,
+        originalEvent: _originalEvent,
+      }) === false) {
+        return this;
+      }
+
+      if (_originalEvent) {
+        const { pointers } = this;
+        const offset = getOffset(this.cropper);
+        const center = pointers && Object.keys(pointers).length ? getPointersCenter(pointers) : {
+          pageX: _originalEvent.pageX,
+          pageY: _originalEvent.pageY,
+        };
+
+        // Zoom from the triggering point of the event
+        canvasData.left -= (newWidth - width) * (
+          ((center.pageX - offset.left) - canvasData.left) / width
+        );
+        canvasData.top -= (newHeight - height) * (
+          ((center.pageY - offset.top) - canvasData.top) / height
+        );
+      } else if (isPlainObject(pivot) && isNumber(pivot.x) && isNumber(pivot.y)) {
+        canvasData.left -= (newWidth - width) * (
+          (pivot.x - canvasData.left) / width
+        );
+        canvasData.top -= (newHeight - height) * (
+          (pivot.y - canvasData.top) / height
+        );
+      } else {
+        // Zoom from the center of the canvas
+        canvasData.left -= (newWidth - width) / 2;
+        canvasData.top -= (newHeight - height) / 2;
+      }
+
+      canvasData.width = newWidth;
+      canvasData.height = newHeight;
+      this.renderCanvas(true);
+    }
+
+    return this;
+  },
+
+  /**
+   * Rotate the canvas with a relative degree
+   * @param {number} degree - The rotate degree.
+   * @returns {Cropper} this
+   */
+  rotate(degree) {
+    return this.rotateTo((this.imageData.rotate || 0) + Number(degree));
+  },
+
+  /**
+   * Rotate the canvas to an absolute degree
+   * @param {number} degree - The rotate degree.
+   * @returns {Cropper} this
+   */
+  rotateTo(degree) {
+    degree = Number(degree);
+
+    if (isNumber(degree) && this.ready && !this.disabled && this.options.rotatable) {
+      this.imageData.rotate = degree % 360;
+      this.renderCanvas(true, true);
+    }
+
+    return this;
+  },
+
+  /**
+   * Scale the image on the x-axis.
+   * @param {number} scaleX - The scale ratio on the x-axis.
+   * @returns {Cropper} this
+   */
+  scaleX(scaleX) {
+    const { scaleY } = this.imageData;
+
+    return this.scale(scaleX, isNumber(scaleY) ? scaleY : 1);
+  },
+
+  /**
+   * Scale the image on the y-axis.
+   * @param {number} scaleY - The scale ratio on the y-axis.
+   * @returns {Cropper} this
+   */
+  scaleY(scaleY) {
+    const { scaleX } = this.imageData;
+
+    return this.scale(isNumber(scaleX) ? scaleX : 1, scaleY);
+  },
+
+  /**
+   * Scale the image
+   * @param {number} scaleX - The scale ratio on the x-axis.
+   * @param {number} [scaleY=scaleX] - The scale ratio on the y-axis.
+   * @returns {Cropper} this
+   */
+  scale(scaleX, scaleY = scaleX) {
+    const { imageData } = this;
+    let transformed = false;
+
+    scaleX = Number(scaleX);
+    scaleY = Number(scaleY);
+
+    if (this.ready && !this.disabled && this.options.scalable) {
+      if (isNumber(scaleX)) {
+        imageData.scaleX = scaleX;
+        transformed = true;
+      }
+
+      if (isNumber(scaleY)) {
+        imageData.scaleY = scaleY;
+        transformed = true;
+      }
+
+      if (transformed) {
+        this.renderCanvas(true, true);
+      }
+    }
+
+    return this;
+  },
+
+  /**
+   * Get the cropped area position and size data (base on the original image)
+   * @param {boolean} [rounded=false] - Indicate if round the data values or not.
+   * @returns {Object} The result cropped data.
+   */
+  getData(rounded = false) {
+    const {
+      options,
+      imageData,
+      canvasData,
+      cropBoxData,
+    } = this;
+    let data;
+
+    if (this.ready && this.cropped) {
+      data = {
+        x: cropBoxData.left - canvasData.left,
+        y: cropBoxData.top - canvasData.top,
+        width: cropBoxData.width,
+        height: cropBoxData.height,
+      };
+
+      const ratio = imageData.width / imageData.naturalWidth;
+
+      forEach(data, (n, i) => {
+        data[i] = n / ratio;
+      });
+
+      if (rounded) {
+        // In case rounding off leads to extra 1px in right or bottom border
+        // we should round the top-left corner and the dimension (#343).
+        const bottom = Math.round(data.y + data.height);
+        const right = Math.round(data.x + data.width);
+
+        data.x = Math.round(data.x);
+        data.y = Math.round(data.y);
+        data.width = right - data.x;
+        data.height = bottom - data.y;
+      }
+    } else {
+      data = {
+        x: 0,
+        y: 0,
+        width: 0,
+        height: 0,
+      };
+    }
+
+    if (options.rotatable) {
+      data.rotate = imageData.rotate || 0;
+    }
+
+    if (options.scalable) {
+      data.scaleX = imageData.scaleX || 1;
+      data.scaleY = imageData.scaleY || 1;
+    }
+
+    return data;
+  },
+
+  /**
+   * Set the cropped area position and size with new data
+   * @param {Object} data - The new data.
+   * @returns {Cropper} this
+   */
+  setData(data) {
+    const { options, imageData, canvasData } = this;
+    const cropBoxData = {};
+
+    if (this.ready && !this.disabled && isPlainObject(data)) {
+      let transformed = false;
+
+      if (options.rotatable) {
+        if (isNumber(data.rotate) && data.rotate !== imageData.rotate) {
+          imageData.rotate = data.rotate;
+          transformed = true;
+        }
+      }
+
+      if (options.scalable) {
+        if (isNumber(data.scaleX) && data.scaleX !== imageData.scaleX) {
+          imageData.scaleX = data.scaleX;
+          transformed = true;
+        }
+
+        if (isNumber(data.scaleY) && data.scaleY !== imageData.scaleY) {
+          imageData.scaleY = data.scaleY;
+          transformed = true;
+        }
+      }
+
+      if (transformed) {
+        this.renderCanvas(true, true);
+      }
+
+      const ratio = imageData.width / imageData.naturalWidth;
+
+      if (isNumber(data.x)) {
+        cropBoxData.left = (data.x * ratio) + canvasData.left;
+      }
+
+      if (isNumber(data.y)) {
+        cropBoxData.top = (data.y * ratio) + canvasData.top;
+      }
+
+      if (isNumber(data.width)) {
+        cropBoxData.width = data.width * ratio;
+      }
+
+      if (isNumber(data.height)) {
+        cropBoxData.height = data.height * ratio;
+      }
+
+      this.setCropBoxData(cropBoxData);
+    }
+
+    return this;
+  },
+
+  /**
+   * Get the container size data.
+   * @returns {Object} The result container data.
+   */
+  getContainerData() {
+    return this.ready ? assign({}, this.containerData) : {};
+  },
+
+  /**
+   * Get the image position and size data.
+   * @returns {Object} The result image data.
+   */
+  getImageData() {
+    return this.sized ? assign({}, this.imageData) : {};
+  },
+
+  /**
+   * Get the canvas position and size data.
+   * @returns {Object} The result canvas data.
+   */
+  getCanvasData() {
+    const { canvasData } = this;
+    const data = {};
+
+    if (this.ready) {
+      forEach([
+        'left',
+        'top',
+        'width',
+        'height',
+        'naturalWidth',
+        'naturalHeight',
+      ], (n) => {
+        data[n] = canvasData[n];
+      });
+    }
+
+    return data;
+  },
+
+  /**
+   * Set the canvas position and size with new data.
+   * @param {Object} data - The new canvas data.
+   * @returns {Cropper} this
+   */
+  setCanvasData(data) {
+    const { canvasData } = this;
+    const { aspectRatio } = canvasData;
+
+    if (this.ready && !this.disabled && isPlainObject(data)) {
+      if (isNumber(data.left)) {
+        canvasData.left = data.left;
+      }
+
+      if (isNumber(data.top)) {
+        canvasData.top = data.top;
+      }
+
+      if (isNumber(data.width)) {
+        canvasData.width = data.width;
+        canvasData.height = data.width / aspectRatio;
+      } else if (isNumber(data.height)) {
+        canvasData.height = data.height;
+        canvasData.width = data.height * aspectRatio;
+      }
+
+      this.renderCanvas(true);
+    }
+
+    return this;
+  },
+
+  /**
+   * Get the crop box position and size data.
+   * @returns {Object} The result crop box data.
+   */
+  getCropBoxData() {
+    const { cropBoxData } = this;
+    let data;
+
+    if (this.ready && this.cropped) {
+      data = {
+        left: cropBoxData.left,
+        top: cropBoxData.top,
+        width: cropBoxData.width,
+        height: cropBoxData.height,
+      };
+    }
+
+    return data || {};
+  },
+
+  /**
+   * Set the crop box position and size with new data.
+   * @param {Object} data - The new crop box data.
+   * @returns {Cropper} this
+   */
+  setCropBoxData(data) {
+    const { cropBoxData } = this;
+    const { aspectRatio } = this.options;
+    let widthChanged;
+    let heightChanged;
+
+    if (this.ready && this.cropped && !this.disabled && isPlainObject(data)) {
+      if (isNumber(data.left)) {
+        cropBoxData.left = data.left;
+      }
+
+      if (isNumber(data.top)) {
+        cropBoxData.top = data.top;
+      }
+
+      if (isNumber(data.width) && data.width !== cropBoxData.width) {
+        widthChanged = true;
+        cropBoxData.width = data.width;
+      }
+
+      if (isNumber(data.height) && data.height !== cropBoxData.height) {
+        heightChanged = true;
+        cropBoxData.height = data.height;
+      }
+
+      if (aspectRatio) {
+        if (widthChanged) {
+          cropBoxData.height = cropBoxData.width / aspectRatio;
+        } else if (heightChanged) {
+          cropBoxData.width = cropBoxData.height * aspectRatio;
+        }
+      }
+
+      this.renderCropBox();
+    }
+
+    return this;
+  },
+
+  /**
+   * Get a canvas drawn the cropped image.
+   * @param {Object} [options={}] - The config options.
+   * @returns {HTMLCanvasElement} - The result canvas.
+   */
+  getCroppedCanvas(options = {}) {
+    if (!this.ready || !window.HTMLCanvasElement) {
+      return null;
+    }
+
+    const { canvasData } = this;
+    const source = getSourceCanvas(this.image, this.imageData, canvasData, options);
+
+    // Returns the source canvas if it is not cropped.
+    if (!this.cropped) {
+      return source;
+    }
+
+    let {
+      x: initialX,
+      y: initialY,
+      width: initialWidth,
+      height: initialHeight,
+    } = this.getData(options.rounded);
+    const ratio = source.width / Math.floor(canvasData.naturalWidth);
+
+    if (ratio !== 1) {
+      initialX *= ratio;
+      initialY *= ratio;
+      initialWidth *= ratio;
+      initialHeight *= ratio;
+    }
+
+    const aspectRatio = initialWidth / initialHeight;
+    const maxSizes = getAdjustedSizes({
+      aspectRatio,
+      width: options.maxWidth || Infinity,
+      height: options.maxHeight || Infinity,
+    });
+    const minSizes = getAdjustedSizes({
+      aspectRatio,
+      width: options.minWidth || 0,
+      height: options.minHeight || 0,
+    }, 'cover');
+    let {
+      width,
+      height,
+    } = getAdjustedSizes({
+      aspectRatio,
+      width: options.width || (ratio !== 1 ? source.width : initialWidth),
+      height: options.height || (ratio !== 1 ? source.height : initialHeight),
+    });
+
+    width = Math.min(maxSizes.width, Math.max(minSizes.width, width));
+    height = Math.min(maxSizes.height, Math.max(minSizes.height, height));
+
+    const canvas = document.createElement('canvas');
+    const context = canvas.getContext('2d');
+
+    canvas.width = normalizeDecimalNumber(width);
+    canvas.height = normalizeDecimalNumber(height);
+
+    context.fillStyle = options.fillColor || 'transparent';
+    context.fillRect(0, 0, width, height);
+
+    const { imageSmoothingEnabled = true, imageSmoothingQuality } = options;
+
+    context.imageSmoothingEnabled = imageSmoothingEnabled;
+
+    if (imageSmoothingQuality) {
+      context.imageSmoothingQuality = imageSmoothingQuality;
+    }
+
+    // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D.drawImage
+    const sourceWidth = source.width;
+    const sourceHeight = source.height;
+
+    // Source canvas parameters
+    let srcX = initialX;
+    let srcY = initialY;
+    let srcWidth;
+    let srcHeight;
+
+    // Destination canvas parameters
+    let dstX;
+    let dstY;
+    let dstWidth;
+    let dstHeight;
+
+    if (srcX <= -initialWidth || srcX > sourceWidth) {
+      srcX = 0;
+      srcWidth = 0;
+      dstX = 0;
+      dstWidth = 0;
+    } else if (srcX <= 0) {
+      dstX = -srcX;
+      srcX = 0;
+      srcWidth = Math.min(sourceWidth, initialWidth + srcX);
+      dstWidth = srcWidth;
+    } else if (srcX <= sourceWidth) {
+      dstX = 0;
+      srcWidth = Math.min(initialWidth, sourceWidth - srcX);
+      dstWidth = srcWidth;
+    }
+
+    if (srcWidth <= 0 || srcY <= -initialHeight || srcY > sourceHeight) {
+      srcY = 0;
+      srcHeight = 0;
+      dstY = 0;
+      dstHeight = 0;
+    } else if (srcY <= 0) {
+      dstY = -srcY;
+      srcY = 0;
+      srcHeight = Math.min(sourceHeight, initialHeight + srcY);
+      dstHeight = srcHeight;
+    } else if (srcY <= sourceHeight) {
+      dstY = 0;
+      srcHeight = Math.min(initialHeight, sourceHeight - srcY);
+      dstHeight = srcHeight;
+    }
+
+    const params = [
+      srcX,
+      srcY,
+      srcWidth,
+      srcHeight,
+    ];
+
+    // Avoid "IndexSizeError"
+    if (dstWidth > 0 && dstHeight > 0) {
+      const scale = width / initialWidth;
+
+      params.push(
+        dstX * scale,
+        dstY * scale,
+        dstWidth * scale,
+        dstHeight * scale,
+      );
+    }
+
+    // All the numerical parameters should be integer for `drawImage`
+    // https://github.com/fengyuanchen/cropper/issues/476
+    context.drawImage(source, ...params.map((param) => Math.floor(normalizeDecimalNumber(param))));
+
+    return canvas;
+  },
+
+  /**
+   * Change the aspect ratio of the crop box.
+   * @param {number} aspectRatio - The new aspect ratio.
+   * @returns {Cropper} this
+   */
+  setAspectRatio(aspectRatio) {
+    const { options } = this;
+
+    if (!this.disabled && !isUndefined(aspectRatio)) {
+      // 0 -> NaN
+      options.aspectRatio = Math.max(0, aspectRatio) || NaN;
+
+      if (this.ready) {
+        this.initCropBox();
+
+        if (this.cropped) {
+          this.renderCropBox();
+        }
+      }
+    }
+
+    return this;
+  },
+
+  /**
+   * Change the drag mode.
+   * @param {string} mode - The new drag mode.
+   * @returns {Cropper} this
+   */
+  setDragMode(mode) {
+    const { options, dragBox, face } = this;
+
+    if (this.ready && !this.disabled) {
+      const croppable = mode === DRAG_MODE_CROP;
+      const movable = options.movable && mode === DRAG_MODE_MOVE;
+
+      mode = (croppable || movable) ? mode : DRAG_MODE_NONE;
+
+      options.dragMode = mode;
+      setData(dragBox, DATA_ACTION, mode);
+      toggleClass(dragBox, CLASS_CROP, croppable);
+      toggleClass(dragBox, CLASS_MOVE, movable);
+
+      if (!options.cropBoxMovable) {
+        // Sync drag mode to crop box when it is not movable
+        setData(face, DATA_ACTION, mode);
+        toggleClass(face, CLASS_CROP, croppable);
+        toggleClass(face, CLASS_MOVE, movable);
+      }
+    }
+
+    return this;
+  },
+};

server/node_modules/cropperjs/src/js/preview.js

@@ -0,0 +1,148 @@
+import { DATA_PREVIEW } from './constants';
+import {
+  assign,
+  forEach,
+  getData,
+  getTransforms,
+  removeData,
+  setData,
+  setStyle,
+} from './utilities';
+
+export default {
+  initPreview() {
+    const { element, crossOrigin } = this;
+    const { preview } = this.options;
+    const url = crossOrigin ? this.crossOriginUrl : this.url;
+    const alt = element.alt || 'The image to preview';
+    const image = document.createElement('img');
+
+    if (crossOrigin) {
+      image.crossOrigin = crossOrigin;
+    }
+
+    image.src = url;
+    image.alt = alt;
+    this.viewBox.appendChild(image);
+    this.viewBoxImage = image;
+
+    if (!preview) {
+      return;
+    }
+
+    let previews = preview;
+
+    if (typeof preview === 'string') {
+      previews = element.ownerDocument.querySelectorAll(preview);
+    } else if (preview.querySelector) {
+      previews = [preview];
+    }
+
+    this.previews = previews;
+
+    forEach(previews, (el) => {
+      const img = document.createElement('img');
+
+      // Save the original size for recover
+      setData(el, DATA_PREVIEW, {
+        width: el.offsetWidth,
+        height: el.offsetHeight,
+        html: el.innerHTML,
+      });
+
+      if (crossOrigin) {
+        img.crossOrigin = crossOrigin;
+      }
+
+      img.src = url;
+      img.alt = alt;
+
+      /**
+       * Override img element styles
+       * Add `display:block` to avoid margin top issue
+       * Add `height:auto` to override `height` attribute on IE8
+       * (Occur only when margin-top <= -height)
+       */
+      img.style.cssText = (
+        'display:block;'
+        + 'width:100%;'
+        + 'height:auto;'
+        + 'min-width:0!important;'
+        + 'min-height:0!important;'
+        + 'max-width:none!important;'
+        + 'max-height:none!important;'
+        + 'image-orientation:0deg!important;"'
+      );
+
+      el.innerHTML = '';
+      el.appendChild(img);
+    });
+  },
+
+  resetPreview() {
+    forEach(this.previews, (element) => {
+      const data = getData(element, DATA_PREVIEW);
+
+      setStyle(element, {
+        width: data.width,
+        height: data.height,
+      });
+
+      element.innerHTML = data.html;
+      removeData(element, DATA_PREVIEW);
+    });
+  },
+
+  preview() {
+    const { imageData, canvasData, cropBoxData } = this;
+    const { width: cropBoxWidth, height: cropBoxHeight } = cropBoxData;
+    const { width, height } = imageData;
+    const left = cropBoxData.left - canvasData.left - imageData.left;
+    const top = cropBoxData.top - canvasData.top - imageData.top;
+
+    if (!this.cropped || this.disabled) {
+      return;
+    }
+
+    setStyle(this.viewBoxImage, assign({
+      width,
+      height,
+    }, getTransforms(assign({
+      translateX: -left,
+      translateY: -top,
+    }, imageData))));
+
+    forEach(this.previews, (element) => {
+      const data = getData(element, DATA_PREVIEW);
+      const originalWidth = data.width;
+      const originalHeight = data.height;
+      let newWidth = originalWidth;
+      let newHeight = originalHeight;
+      let ratio = 1;
+
+      if (cropBoxWidth) {
+        ratio = originalWidth / cropBoxWidth;
+        newHeight = cropBoxHeight * ratio;
+      }
+
+      if (cropBoxHeight && newHeight > originalHeight) {
+        ratio = originalHeight / cropBoxHeight;
+        newWidth = cropBoxWidth * ratio;
+        newHeight = originalHeight;
+      }
+
+      setStyle(element, {
+        width: newWidth,
+        height: newHeight,
+      });
+
+      setStyle(element.getElementsByTagName('img')[0], assign({
+        width: width * ratio,
+        height: height * ratio,
+      }, getTransforms(assign({
+        translateX: -left * ratio,
+        translateY: -top * ratio,
+      }, imageData))));
+    });
+  },
+};

server/node_modules/cropperjs/src/js/render.js

@@ -0,0 +1,506 @@
+import {
+  ACTION_ALL,
+  ACTION_MOVE,
+  CLASS_HIDDEN,
+  DATA_ACTION,
+  EVENT_CROP,
+  MIN_CONTAINER_HEIGHT,
+  MIN_CONTAINER_WIDTH,
+} from './constants';
+import {
+  addClass,
+  assign,
+  dispatchEvent,
+  getAdjustedSizes,
+  getRotatedSizes,
+  getTransforms,
+  removeClass,
+  setData,
+  setStyle,
+} from './utilities';
+
+export default {
+  render() {
+    this.initContainer();
+    this.initCanvas();
+    this.initCropBox();
+    this.renderCanvas();
+
+    if (this.cropped) {
+      this.renderCropBox();
+    }
+  },
+
+  initContainer() {
+    const {
+      element,
+      options,
+      container,
+      cropper,
+    } = this;
+    const minWidth = Number(options.minContainerWidth);
+    const minHeight = Number(options.minContainerHeight);
+
+    addClass(cropper, CLASS_HIDDEN);
+    removeClass(element, CLASS_HIDDEN);
+
+    const containerData = {
+      width: Math.max(
+        container.offsetWidth,
+        minWidth >= 0 ? minWidth : MIN_CONTAINER_WIDTH,
+      ),
+      height: Math.max(
+        container.offsetHeight,
+        minHeight >= 0 ? minHeight : MIN_CONTAINER_HEIGHT,
+      ),
+    };
+
+    this.containerData = containerData;
+
+    setStyle(cropper, {
+      width: containerData.width,
+      height: containerData.height,
+    });
+
+    addClass(element, CLASS_HIDDEN);
+    removeClass(cropper, CLASS_HIDDEN);
+  },
+
+  // Canvas (image wrapper)
+  initCanvas() {
+    const { containerData, imageData } = this;
+    const { viewMode } = this.options;
+    const rotated = Math.abs(imageData.rotate) % 180 === 90;
+    const naturalWidth = rotated ? imageData.naturalHeight : imageData.naturalWidth;
+    const naturalHeight = rotated ? imageData.naturalWidth : imageData.naturalHeight;
+    const aspectRatio = naturalWidth / naturalHeight;
+    let canvasWidth = containerData.width;
+    let canvasHeight = containerData.height;
+
+    if (containerData.height * aspectRatio > containerData.width) {
+      if (viewMode === 3) {
+        canvasWidth = containerData.height * aspectRatio;
+      } else {
+        canvasHeight = containerData.width / aspectRatio;
+      }
+    } else if (viewMode === 3) {
+      canvasHeight = containerData.width / aspectRatio;
+    } else {
+      canvasWidth = containerData.height * aspectRatio;
+    }
+
+    const canvasData = {
+      aspectRatio,
+      naturalWidth,
+      naturalHeight,
+      width: canvasWidth,
+      height: canvasHeight,
+    };
+
+    this.canvasData = canvasData;
+    this.limited = (viewMode === 1 || viewMode === 2);
+    this.limitCanvas(true, true);
+    canvasData.width = Math.min(
+      Math.max(canvasData.width, canvasData.minWidth),
+      canvasData.maxWidth,
+    );
+    canvasData.height = Math.min(
+      Math.max(canvasData.height, canvasData.minHeight),
+      canvasData.maxHeight,
+    );
+    canvasData.left = (containerData.width - canvasData.width) / 2;
+    canvasData.top = (containerData.height - canvasData.height) / 2;
+    canvasData.oldLeft = canvasData.left;
+    canvasData.oldTop = canvasData.top;
+    this.initialCanvasData = assign({}, canvasData);
+  },
+
+  limitCanvas(sizeLimited, positionLimited) {
+    const {
+      options,
+      containerData,
+      canvasData,
+      cropBoxData,
+    } = this;
+    const { viewMode } = options;
+    const { aspectRatio } = canvasData;
+    const cropped = this.cropped && cropBoxData;
+
+    if (sizeLimited) {
+      let minCanvasWidth = Number(options.minCanvasWidth) || 0;
+      let minCanvasHeight = Number(options.minCanvasHeight) || 0;
+
+      if (viewMode > 1) {
+        minCanvasWidth = Math.max(minCanvasWidth, containerData.width);
+        minCanvasHeight = Math.max(minCanvasHeight, containerData.height);
+
+        if (viewMode === 3) {
+          if (minCanvasHeight * aspectRatio > minCanvasWidth) {
+            minCanvasWidth = minCanvasHeight * aspectRatio;
+          } else {
+            minCanvasHeight = minCanvasWidth / aspectRatio;
+          }
+        }
+      } else if (viewMode > 0) {
+        if (minCanvasWidth) {
+          minCanvasWidth = Math.max(
+            minCanvasWidth,
+            cropped ? cropBoxData.width : 0,
+          );
+        } else if (minCanvasHeight) {
+          minCanvasHeight = Math.max(
+            minCanvasHeight,
+            cropped ? cropBoxData.height : 0,
+          );
+        } else if (cropped) {
+          minCanvasWidth = cropBoxData.width;
+          minCanvasHeight = cropBoxData.height;
+
+          if (minCanvasHeight * aspectRatio > minCanvasWidth) {
+            minCanvasWidth = minCanvasHeight * aspectRatio;
+          } else {
+            minCanvasHeight = minCanvasWidth / aspectRatio;
+          }
+        }
+      }
+
+      ({ width: minCanvasWidth, height: minCanvasHeight } = getAdjustedSizes({
+        aspectRatio,
+        width: minCanvasWidth,
+        height: minCanvasHeight,
+      }));
+
+      canvasData.minWidth = minCanvasWidth;
+      canvasData.minHeight = minCanvasHeight;
+      canvasData.maxWidth = Infinity;
+      canvasData.maxHeight = Infinity;
+    }
+
+    if (positionLimited) {
+      if (viewMode > (cropped ? 0 : 1)) {
+        const newCanvasLeft = containerData.width - canvasData.width;
+        const newCanvasTop = containerData.height - canvasData.height;
+
+        canvasData.minLeft = Math.min(0, newCanvasLeft);
+        canvasData.minTop = Math.min(0, newCanvasTop);
+        canvasData.maxLeft = Math.max(0, newCanvasLeft);
+        canvasData.maxTop = Math.max(0, newCanvasTop);
+
+        if (cropped && this.limited) {
+          canvasData.minLeft = Math.min(
+            cropBoxData.left,
+            cropBoxData.left + (cropBoxData.width - canvasData.width),
+          );
+          canvasData.minTop = Math.min(
+            cropBoxData.top,
+            cropBoxData.top + (cropBoxData.height - canvasData.height),
+          );
+          canvasData.maxLeft = cropBoxData.left;
+          canvasData.maxTop = cropBoxData.top;
+
+          if (viewMode === 2) {
+            if (canvasData.width >= containerData.width) {
+              canvasData.minLeft = Math.min(0, newCanvasLeft);
+              canvasData.maxLeft = Math.max(0, newCanvasLeft);
+            }
+
+            if (canvasData.height >= containerData.height) {
+              canvasData.minTop = Math.min(0, newCanvasTop);
+              canvasData.maxTop = Math.max(0, newCanvasTop);
+            }
+          }
+        }
+      } else {
+        canvasData.minLeft = -canvasData.width;
+        canvasData.minTop = -canvasData.height;
+        canvasData.maxLeft = containerData.width;
+        canvasData.maxTop = containerData.height;
+      }
+    }
+  },
+
+  renderCanvas(changed, transformed) {
+    const { canvasData, imageData } = this;
+
+    if (transformed) {
+      const { width: naturalWidth, height: naturalHeight } = getRotatedSizes({
+        width: imageData.naturalWidth * Math.abs(imageData.scaleX || 1),
+        height: imageData.naturalHeight * Math.abs(imageData.scaleY || 1),
+        degree: imageData.rotate || 0,
+      });
+      const width = canvasData.width * (naturalWidth / canvasData.naturalWidth);
+      const height = canvasData.height * (naturalHeight / canvasData.naturalHeight);
+
+      canvasData.left -= (width - canvasData.width) / 2;
+      canvasData.top -= (height - canvasData.height) / 2;
+      canvasData.width = width;
+      canvasData.height = height;
+      canvasData.aspectRatio = naturalWidth / naturalHeight;
+      canvasData.naturalWidth = naturalWidth;
+      canvasData.naturalHeight = naturalHeight;
+      this.limitCanvas(true, false);
+    }
+
+    if (canvasData.width > canvasData.maxWidth
+      || canvasData.width < canvasData.minWidth) {
+      canvasData.left = canvasData.oldLeft;
+    }
+
+    if (canvasData.height > canvasData.maxHeight
+      || canvasData.height < canvasData.minHeight) {
+      canvasData.top = canvasData.oldTop;
+    }
+
+    canvasData.width = Math.min(
+      Math.max(canvasData.width, canvasData.minWidth),
+      canvasData.maxWidth,
+    );
+    canvasData.height = Math.min(
+      Math.max(canvasData.height, canvasData.minHeight),
+      canvasData.maxHeight,
+    );
+
+    this.limitCanvas(false, true);
+
+    canvasData.left = Math.min(
+      Math.max(canvasData.left, canvasData.minLeft),
+      canvasData.maxLeft,
+    );
+    canvasData.top = Math.min(
+      Math.max(canvasData.top, canvasData.minTop),
+      canvasData.maxTop,
+    );
+    canvasData.oldLeft = canvasData.left;
+    canvasData.oldTop = canvasData.top;
+
+    setStyle(this.canvas, assign({
+      width: canvasData.width,
+      height: canvasData.height,
+    }, getTransforms({
+      translateX: canvasData.left,
+      translateY: canvasData.top,
+    })));
+
+    this.renderImage(changed);
+
+    if (this.cropped && this.limited) {
+      this.limitCropBox(true, true);
+    }
+  },
+
+  renderImage(changed) {
+    const { canvasData, imageData } = this;
+    const width = imageData.naturalWidth * (canvasData.width / canvasData.naturalWidth);
+    const height = imageData.naturalHeight * (canvasData.height / canvasData.naturalHeight);
+
+    assign(imageData, {
+      width,
+      height,
+      left: (canvasData.width - width) / 2,
+      top: (canvasData.height - height) / 2,
+    });
+    setStyle(this.image, assign({
+      width: imageData.width,
+      height: imageData.height,
+    }, getTransforms(assign({
+      translateX: imageData.left,
+      translateY: imageData.top,
+    }, imageData))));
+
+    if (changed) {
+      this.output();
+    }
+  },
+
+  initCropBox() {
+    const { options, canvasData } = this;
+    const aspectRatio = options.aspectRatio || options.initialAspectRatio;
+    const autoCropArea = Number(options.autoCropArea) || 0.8;
+    const cropBoxData = {
+      width: canvasData.width,
+      height: canvasData.height,
+    };
+
+    if (aspectRatio) {
+      if (canvasData.height * aspectRatio > canvasData.width) {
+        cropBoxData.height = cropBoxData.width / aspectRatio;
+      } else {
+        cropBoxData.width = cropBoxData.height * aspectRatio;
+      }
+    }
+
+    this.cropBoxData = cropBoxData;
+    this.limitCropBox(true, true);
+
+    // Initialize auto crop area
+    cropBoxData.width = Math.min(
+      Math.max(cropBoxData.width, cropBoxData.minWidth),
+      cropBoxData.maxWidth,
+    );
+    cropBoxData.height = Math.min(
+      Math.max(cropBoxData.height, cropBoxData.minHeight),
+      cropBoxData.maxHeight,
+    );
+
+    // The width/height of auto crop area must large than "minWidth/Height"
+    cropBoxData.width = Math.max(
+      cropBoxData.minWidth,
+      cropBoxData.width * autoCropArea,
+    );
+    cropBoxData.height = Math.max(
+      cropBoxData.minHeight,
+      cropBoxData.height * autoCropArea,
+    );
+    cropBoxData.left = (
+      canvasData.left + ((canvasData.width - cropBoxData.width) / 2)
+    );
+    cropBoxData.top = (
+      canvasData.top + ((canvasData.height - cropBoxData.height) / 2)
+    );
+    cropBoxData.oldLeft = cropBoxData.left;
+    cropBoxData.oldTop = cropBoxData.top;
+
+    this.initialCropBoxData = assign({}, cropBoxData);
+  },
+
+  limitCropBox(sizeLimited, positionLimited) {
+    const {
+      options,
+      containerData,
+      canvasData,
+      cropBoxData,
+      limited,
+    } = this;
+    const { aspectRatio } = options;
+
+    if (sizeLimited) {
+      let minCropBoxWidth = Number(options.minCropBoxWidth) || 0;
+      let minCropBoxHeight = Number(options.minCropBoxHeight) || 0;
+      let maxCropBoxWidth = limited ? Math.min(
+        containerData.width,
+        canvasData.width,
+        canvasData.width + canvasData.left,
+        containerData.width - canvasData.left,
+      ) : containerData.width;
+      let maxCropBoxHeight = limited ? Math.min(
+        containerData.height,
+        canvasData.height,
+        canvasData.height + canvasData.top,
+        containerData.height - canvasData.top,
+      ) : containerData.height;
+
+      // The min/maxCropBoxWidth/Height must be less than container's width/height
+      minCropBoxWidth = Math.min(minCropBoxWidth, containerData.width);
+      minCropBoxHeight = Math.min(minCropBoxHeight, containerData.height);
+
+      if (aspectRatio) {
+        if (minCropBoxWidth && minCropBoxHeight) {
+          if (minCropBoxHeight * aspectRatio > minCropBoxWidth) {
+            minCropBoxHeight = minCropBoxWidth / aspectRatio;
+          } else {
+            minCropBoxWidth = minCropBoxHeight * aspectRatio;
+          }
+        } else if (minCropBoxWidth) {
+          minCropBoxHeight = minCropBoxWidth / aspectRatio;
+        } else if (minCropBoxHeight) {
+          minCropBoxWidth = minCropBoxHeight * aspectRatio;
+        }
+
+        if (maxCropBoxHeight * aspectRatio > maxCropBoxWidth) {
+          maxCropBoxHeight = maxCropBoxWidth / aspectRatio;
+        } else {
+          maxCropBoxWidth = maxCropBoxHeight * aspectRatio;
+        }
+      }
+
+      // The minWidth/Height must be less than maxWidth/Height
+      cropBoxData.minWidth = Math.min(minCropBoxWidth, maxCropBoxWidth);
+      cropBoxData.minHeight = Math.min(minCropBoxHeight, maxCropBoxHeight);
+      cropBoxData.maxWidth = maxCropBoxWidth;
+      cropBoxData.maxHeight = maxCropBoxHeight;
+    }
+
+    if (positionLimited) {
+      if (limited) {
+        cropBoxData.minLeft = Math.max(0, canvasData.left);
+        cropBoxData.minTop = Math.max(0, canvasData.top);
+        cropBoxData.maxLeft = Math.min(
+          containerData.width,
+          canvasData.left + canvasData.width,
+        ) - cropBoxData.width;
+        cropBoxData.maxTop = Math.min(
+          containerData.height,
+          canvasData.top + canvasData.height,
+        ) - cropBoxData.height;
+      } else {
+        cropBoxData.minLeft = 0;
+        cropBoxData.minTop = 0;
+        cropBoxData.maxLeft = containerData.width - cropBoxData.width;
+        cropBoxData.maxTop = containerData.height - cropBoxData.height;
+      }
+    }
+  },
+
+  renderCropBox() {
+    const { options, containerData, cropBoxData } = this;
+
+    if (cropBoxData.width > cropBoxData.maxWidth
+      || cropBoxData.width < cropBoxData.minWidth) {
+      cropBoxData.left = cropBoxData.oldLeft;
+    }
+
+    if (cropBoxData.height > cropBoxData.maxHeight
+      || cropBoxData.height < cropBoxData.minHeight) {
+      cropBoxData.top = cropBoxData.oldTop;
+    }
+
+    cropBoxData.width = Math.min(
+      Math.max(cropBoxData.width, cropBoxData.minWidth),
+      cropBoxData.maxWidth,
+    );
+    cropBoxData.height = Math.min(
+      Math.max(cropBoxData.height, cropBoxData.minHeight),
+      cropBoxData.maxHeight,
+    );
+
+    this.limitCropBox(false, true);
+
+    cropBoxData.left = Math.min(
+      Math.max(cropBoxData.left, cropBoxData.minLeft),
+      cropBoxData.maxLeft,
+    );
+    cropBoxData.top = Math.min(
+      Math.max(cropBoxData.top, cropBoxData.minTop),
+      cropBoxData.maxTop,
+    );
+    cropBoxData.oldLeft = cropBoxData.left;
+    cropBoxData.oldTop = cropBoxData.top;
+
+    if (options.movable && options.cropBoxMovable) {
+      // Turn to move the canvas when the crop box is equal to the container
+      setData(this.face, DATA_ACTION, cropBoxData.width >= containerData.width
+        && cropBoxData.height >= containerData.height ? ACTION_MOVE : ACTION_ALL);
+    }
+
+    setStyle(this.cropBox, assign({
+      width: cropBoxData.width,
+      height: cropBoxData.height,
+    }, getTransforms({
+      translateX: cropBoxData.left,
+      translateY: cropBoxData.top,
+    })));
+
+    if (this.cropped && this.limited) {
+      this.limitCanvas(true, true);
+    }
+
+    if (!this.disabled) {
+      this.output();
+    }
+  },
+
+  output() {
+    this.preview();
+    dispatchEvent(this.element, EVENT_CROP, this.getData());
+  },
+};

server/node_modules/cropperjs/src/js/template.js

@@ -0,0 +1,27 @@
+export default (
+  '<div class="cropper-container" touch-action="none">'
+    + '<div class="cropper-wrap-box">'
+      + '<div class="cropper-canvas"></div>'
+    + '</div>'
+    + '<div class="cropper-drag-box"></div>'
+    + '<div class="cropper-crop-box">'
+      + '<span class="cropper-view-box"></span>'
+      + '<span class="cropper-dashed dashed-h"></span>'
+      + '<span class="cropper-dashed dashed-v"></span>'
+      + '<span class="cropper-center"></span>'
+      + '<span class="cropper-face"></span>'
+      + '<span class="cropper-line line-e" data-cropper-action="e"></span>'
+      + '<span class="cropper-line line-n" data-cropper-action="n"></span>'
+      + '<span class="cropper-line line-w" data-cropper-action="w"></span>'
+      + '<span class="cropper-line line-s" data-cropper-action="s"></span>'
+      + '<span class="cropper-point point-e" data-cropper-action="e"></span>'
+      + '<span class="cropper-point point-n" data-cropper-action="n"></span>'
+      + '<span class="cropper-point point-w" data-cropper-action="w"></span>'
+      + '<span class="cropper-point point-s" data-cropper-action="s"></span>'
+      + '<span class="cropper-point point-ne" data-cropper-action="ne"></span>'
+      + '<span class="cropper-point point-nw" data-cropper-action="nw"></span>'
+      + '<span class="cropper-point point-sw" data-cropper-action="sw"></span>'
+      + '<span class="cropper-point point-se" data-cropper-action="se"></span>'
+    + '</div>'
+  + '</div>'
+);

server/node_modules/cropperjs/src/js/utilities.js

@@ -0,0 +1,963 @@
+import { IS_BROWSER, WINDOW } from './constants';
+
+/**
+ * Check if the given value is not a number.
+ */
+export const isNaN = Number.isNaN || WINDOW.isNaN;
+
+/**
+ * Check if the given value is a number.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a number, else `false`.
+ */
+export function isNumber(value) {
+  return typeof value === 'number' && !isNaN(value);
+}
+
+/**
+ * Check if the given value is a positive number.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a positive number, else `false`.
+ */
+export const isPositiveNumber = (value) => value > 0 && value < Infinity;
+
+/**
+ * Check if the given value is undefined.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is undefined, else `false`.
+ */
+export function isUndefined(value) {
+  return typeof value === 'undefined';
+}
+
+/**
+ * Check if the given value is an object.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is an object, else `false`.
+ */
+export function isObject(value) {
+  return typeof value === 'object' && value !== null;
+}
+
+const { hasOwnProperty } = Object.prototype;
+
+/**
+ * Check if the given value is a plain object.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a plain object, else `false`.
+ */
+export function isPlainObject(value) {
+  if (!isObject(value)) {
+    return false;
+  }
+
+  try {
+    const { constructor } = value;
+    const { prototype } = constructor;
+
+    return constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf');
+  } catch (error) {
+    return false;
+  }
+}
+
+/**
+ * Check if the given value is a function.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a function, else `false`.
+ */
+export function isFunction(value) {
+  return typeof value === 'function';
+}
+
+const { slice } = Array.prototype;
+
+/**
+ * Convert array-like or iterable object to an array.
+ * @param {*} value - The value to convert.
+ * @returns {Array} Returns a new array.
+ */
+export function toArray(value) {
+  return Array.from ? Array.from(value) : slice.call(value);
+}
+
+/**
+ * Iterate the given data.
+ * @param {*} data - The data to iterate.
+ * @param {Function} callback - The process function for each element.
+ * @returns {*} The original data.
+ */
+export function forEach(data, callback) {
+  if (data && isFunction(callback)) {
+    if (Array.isArray(data) || isNumber(data.length)/* array-like */) {
+      toArray(data).forEach((value, key) => {
+        callback.call(data, value, key, data);
+      });
+    } else if (isObject(data)) {
+      Object.keys(data).forEach((key) => {
+        callback.call(data, data[key], key, data);
+      });
+    }
+  }
+
+  return data;
+}
+
+/**
+ * Extend the given object.
+ * @param {*} target - The target object to extend.
+ * @param {*} args - The rest objects for merging to the target object.
+ * @returns {Object} The extended object.
+ */
+export const assign = Object.assign || function assign(target, ...args) {
+  if (isObject(target) && args.length > 0) {
+    args.forEach((arg) => {
+      if (isObject(arg)) {
+        Object.keys(arg).forEach((key) => {
+          target[key] = arg[key];
+        });
+      }
+    });
+  }
+
+  return target;
+};
+
+const REGEXP_DECIMALS = /\.\d*(?:0|9){12}\d*$/;
+
+/**
+ * Normalize decimal number.
+ * Check out {@link https://0.30000000000000004.com/}
+ * @param {number} value - The value to normalize.
+ * @param {number} [times=100000000000] - The times for normalizing.
+ * @returns {number} Returns the normalized number.
+ */
+export function normalizeDecimalNumber(value, times = 100000000000) {
+  return REGEXP_DECIMALS.test(value) ? (Math.round(value * times) / times) : value;
+}
+
+const REGEXP_SUFFIX = /^width|height|left|top|marginLeft|marginTop$/;
+
+/**
+ * Apply styles to the given element.
+ * @param {Element} element - The target element.
+ * @param {Object} styles - The styles for applying.
+ */
+export function setStyle(element, styles) {
+  const { style } = element;
+
+  forEach(styles, (value, property) => {
+    if (REGEXP_SUFFIX.test(property) && isNumber(value)) {
+      value = `${value}px`;
+    }
+
+    style[property] = value;
+  });
+}
+
+/**
+ * Check if the given element has a special class.
+ * @param {Element} element - The element to check.
+ * @param {string} value - The class to search.
+ * @returns {boolean} Returns `true` if the special class was found.
+ */
+export function hasClass(element, value) {
+  return element.classList
+    ? element.classList.contains(value)
+    : element.className.indexOf(value) > -1;
+}
+
+/**
+ * Add classes to the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be added.
+ */
+export function addClass(element, value) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    forEach(element, (elem) => {
+      addClass(elem, value);
+    });
+    return;
+  }
+
+  if (element.classList) {
+    element.classList.add(value);
+    return;
+  }
+
+  const className = element.className.trim();
+
+  if (!className) {
+    element.className = value;
+  } else if (className.indexOf(value) < 0) {
+    element.className = `${className} ${value}`;
+  }
+}
+
+/**
+ * Remove classes from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be removed.
+ */
+export function removeClass(element, value) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    forEach(element, (elem) => {
+      removeClass(elem, value);
+    });
+    return;
+  }
+
+  if (element.classList) {
+    element.classList.remove(value);
+    return;
+  }
+
+  if (element.className.indexOf(value) >= 0) {
+    element.className = element.className.replace(value, '');
+  }
+}
+
+/**
+ * Add or remove classes from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be toggled.
+ * @param {boolean} added - Add only.
+ */
+export function toggleClass(element, value, added) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    forEach(element, (elem) => {
+      toggleClass(elem, value, added);
+    });
+    return;
+  }
+
+  // IE10-11 doesn't support the second parameter of `classList.toggle`
+  if (added) {
+    addClass(element, value);
+  } else {
+    removeClass(element, value);
+  }
+}
+
+const REGEXP_CAMEL_CASE = /([a-z\d])([A-Z])/g;
+
+/**
+ * Transform the given string from camelCase to kebab-case
+ * @param {string} value - The value to transform.
+ * @returns {string} The transformed value.
+ */
+export function toParamCase(value) {
+  return value.replace(REGEXP_CAMEL_CASE, '$1-$2').toLowerCase();
+}
+
+/**
+ * Get data from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to get.
+ * @returns {string} The data value.
+ */
+export function getData(element, name) {
+  if (isObject(element[name])) {
+    return element[name];
+  }
+
+  if (element.dataset) {
+    return element.dataset[name];
+  }
+
+  return element.getAttribute(`data-${toParamCase(name)}`);
+}
+
+/**
+ * Set data to the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to set.
+ * @param {string} data - The data value.
+ */
+export function setData(element, name, data) {
+  if (isObject(data)) {
+    element[name] = data;
+  } else if (element.dataset) {
+    element.dataset[name] = data;
+  } else {
+    element.setAttribute(`data-${toParamCase(name)}`, data);
+  }
+}
+
+/**
+ * Remove data from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to remove.
+ */
+export function removeData(element, name) {
+  if (isObject(element[name])) {
+    try {
+      delete element[name];
+    } catch (error) {
+      element[name] = undefined;
+    }
+  } else if (element.dataset) {
+    // #128 Safari not allows to delete dataset property
+    try {
+      delete element.dataset[name];
+    } catch (error) {
+      element.dataset[name] = undefined;
+    }
+  } else {
+    element.removeAttribute(`data-${toParamCase(name)}`);
+  }
+}
+
+const REGEXP_SPACES = /\s\s*/;
+const onceSupported = (() => {
+  let supported = false;
+
+  if (IS_BROWSER) {
+    let once = false;
+    const listener = () => {};
+    const options = Object.defineProperty({}, 'once', {
+      get() {
+        supported = true;
+        return once;
+      },
+
+      /**
+       * This setter can fix a `TypeError` in strict mode
+       * {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Getter_only}
+       * @param {boolean} value - The value to set
+       */
+      set(value) {
+        once = value;
+      },
+    });
+
+    WINDOW.addEventListener('test', listener, options);
+    WINDOW.removeEventListener('test', listener, options);
+  }
+
+  return supported;
+})();
+
+/**
+ * Remove event listener from the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Function} listener - The event listener.
+ * @param {Object} options - The event options.
+ */
+export function removeListener(element, type, listener, options = {}) {
+  let handler = listener;
+
+  type.trim().split(REGEXP_SPACES).forEach((event) => {
+    if (!onceSupported) {
+      const { listeners } = element;
+
+      if (listeners && listeners[event] && listeners[event][listener]) {
+        handler = listeners[event][listener];
+        delete listeners[event][listener];
+
+        if (Object.keys(listeners[event]).length === 0) {
+          delete listeners[event];
+        }
+
+        if (Object.keys(listeners).length === 0) {
+          delete element.listeners;
+        }
+      }
+    }
+
+    element.removeEventListener(event, handler, options);
+  });
+}
+
+/**
+ * Add event listener to the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Function} listener - The event listener.
+ * @param {Object} options - The event options.
+ */
+export function addListener(element, type, listener, options = {}) {
+  let handler = listener;
+
+  type.trim().split(REGEXP_SPACES).forEach((event) => {
+    if (options.once && !onceSupported) {
+      const { listeners = {} } = element;
+
+      handler = (...args) => {
+        delete listeners[event][listener];
+        element.removeEventListener(event, handler, options);
+        listener.apply(element, args);
+      };
+
+      if (!listeners[event]) {
+        listeners[event] = {};
+      }
+
+      if (listeners[event][listener]) {
+        element.removeEventListener(event, listeners[event][listener], options);
+      }
+
+      listeners[event][listener] = handler;
+      element.listeners = listeners;
+    }
+
+    element.addEventListener(event, handler, options);
+  });
+}
+
+/**
+ * Dispatch event on the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Object} data - The additional event data.
+ * @returns {boolean} Indicate if the event is default prevented or not.
+ */
+export function dispatchEvent(element, type, data) {
+  let event;
+
+  // Event and CustomEvent on IE9-11 are global objects, not constructors
+  if (isFunction(Event) && isFunction(CustomEvent)) {
+    event = new CustomEvent(type, {
+      detail: data,
+      bubbles: true,
+      cancelable: true,
+    });
+  } else {
+    event = document.createEvent('CustomEvent');
+    event.initCustomEvent(type, true, true, data);
+  }
+
+  return element.dispatchEvent(event);
+}
+
+/**
+ * Get the offset base on the document.
+ * @param {Element} element - The target element.
+ * @returns {Object} The offset data.
+ */
+export function getOffset(element) {
+  const box = element.getBoundingClientRect();
+
+  return {
+    left: box.left + (window.pageXOffset - document.documentElement.clientLeft),
+    top: box.top + (window.pageYOffset - document.documentElement.clientTop),
+  };
+}
+
+const { location } = WINDOW;
+const REGEXP_ORIGINS = /^(\w+:)\/\/([^:/?#]*):?(\d*)/i;
+
+/**
+ * Check if the given URL is a cross origin URL.
+ * @param {string} url - The target URL.
+ * @returns {boolean} Returns `true` if the given URL is a cross origin URL, else `false`.
+ */
+export function isCrossOriginURL(url) {
+  const parts = url.match(REGEXP_ORIGINS);
+
+  return parts !== null && (
+    parts[1] !== location.protocol
+    || parts[2] !== location.hostname
+    || parts[3] !== location.port
+  );
+}
+
+/**
+ * Add timestamp to the given URL.
+ * @param {string} url - The target URL.
+ * @returns {string} The result URL.
+ */
+export function addTimestamp(url) {
+  const timestamp = `timestamp=${(new Date()).getTime()}`;
+
+  return url + (url.indexOf('?') === -1 ? '?' : '&') + timestamp;
+}
+
+/**
+ * Get transforms base on the given object.
+ * @param {Object} obj - The target object.
+ * @returns {string} A string contains transform values.
+ */
+export function getTransforms({
+  rotate,
+  scaleX,
+  scaleY,
+  translateX,
+  translateY,
+}) {
+  const values = [];
+
+  if (isNumber(translateX) && translateX !== 0) {
+    values.push(`translateX(${translateX}px)`);
+  }
+
+  if (isNumber(translateY) && translateY !== 0) {
+    values.push(`translateY(${translateY}px)`);
+  }
+
+  // Rotate should come first before scale to match orientation transform
+  if (isNumber(rotate) && rotate !== 0) {
+    values.push(`rotate(${rotate}deg)`);
+  }
+
+  if (isNumber(scaleX) && scaleX !== 1) {
+    values.push(`scaleX(${scaleX})`);
+  }
+
+  if (isNumber(scaleY) && scaleY !== 1) {
+    values.push(`scaleY(${scaleY})`);
+  }
+
+  const transform = values.length ? values.join(' ') : 'none';
+
+  return {
+    WebkitTransform: transform,
+    msTransform: transform,
+    transform,
+  };
+}
+
+/**
+ * Get the max ratio of a group of pointers.
+ * @param {string} pointers - The target pointers.
+ * @returns {number} The result ratio.
+ */
+export function getMaxZoomRatio(pointers) {
+  const pointers2 = { ...pointers };
+  let maxRatio = 0;
+
+  forEach(pointers, (pointer, pointerId) => {
+    delete pointers2[pointerId];
+
+    forEach(pointers2, (pointer2) => {
+      const x1 = Math.abs(pointer.startX - pointer2.startX);
+      const y1 = Math.abs(pointer.startY - pointer2.startY);
+      const x2 = Math.abs(pointer.endX - pointer2.endX);
+      const y2 = Math.abs(pointer.endY - pointer2.endY);
+      const z1 = Math.sqrt((x1 * x1) + (y1 * y1));
+      const z2 = Math.sqrt((x2 * x2) + (y2 * y2));
+      const ratio = (z2 - z1) / z1;
+
+      if (Math.abs(ratio) > Math.abs(maxRatio)) {
+        maxRatio = ratio;
+      }
+    });
+  });
+
+  return maxRatio;
+}
+
+/**
+ * Get a pointer from an event object.
+ * @param {Object} event - The target event object.
+ * @param {boolean} endOnly - Indicates if only returns the end point coordinate or not.
+ * @returns {Object} The result pointer contains start and/or end point coordinates.
+ */
+export function getPointer({ pageX, pageY }, endOnly) {
+  const end = {
+    endX: pageX,
+    endY: pageY,
+  };
+
+  return endOnly ? end : ({
+    startX: pageX,
+    startY: pageY,
+    ...end,
+  });
+}
+
+/**
+ * Get the center point coordinate of a group of pointers.
+ * @param {Object} pointers - The target pointers.
+ * @returns {Object} The center point coordinate.
+ */
+export function getPointersCenter(pointers) {
+  let pageX = 0;
+  let pageY = 0;
+  let count = 0;
+
+  forEach(pointers, ({ startX, startY }) => {
+    pageX += startX;
+    pageY += startY;
+    count += 1;
+  });
+
+  pageX /= count;
+  pageY /= count;
+
+  return {
+    pageX,
+    pageY,
+  };
+}
+
+/**
+ * Get the max sizes in a rectangle under the given aspect ratio.
+ * @param {Object} data - The original sizes.
+ * @param {string} [type='contain'] - The adjust type.
+ * @returns {Object} The result sizes.
+ */
+export function getAdjustedSizes(
+  {
+    aspectRatio,
+    height,
+    width,
+  },
+  type = 'contain', // or 'cover'
+) {
+  const isValidWidth = isPositiveNumber(width);
+  const isValidHeight = isPositiveNumber(height);
+
+  if (isValidWidth && isValidHeight) {
+    const adjustedWidth = height * aspectRatio;
+
+    if ((type === 'contain' && adjustedWidth > width) || (type === 'cover' && adjustedWidth < width)) {
+      height = width / aspectRatio;
+    } else {
+      width = height * aspectRatio;
+    }
+  } else if (isValidWidth) {
+    height = width / aspectRatio;
+  } else if (isValidHeight) {
+    width = height * aspectRatio;
+  }
+
+  return {
+    width,
+    height,
+  };
+}
+
+/**
+ * Get the new sizes of a rectangle after rotated.
+ * @param {Object} data - The original sizes.
+ * @returns {Object} The result sizes.
+ */
+export function getRotatedSizes({ width, height, degree }) {
+  degree = Math.abs(degree) % 180;
+
+  if (degree === 90) {
+    return {
+      width: height,
+      height: width,
+    };
+  }
+
+  const arc = ((degree % 90) * Math.PI) / 180;
+  const sinArc = Math.sin(arc);
+  const cosArc = Math.cos(arc);
+  const newWidth = (width * cosArc) + (height * sinArc);
+  const newHeight = (width * sinArc) + (height * cosArc);
+
+  return degree > 90 ? {
+    width: newHeight,
+    height: newWidth,
+  } : {
+    width: newWidth,
+    height: newHeight,
+  };
+}
+
+/**
+ * Get a canvas which drew the given image.
+ * @param {HTMLImageElement} image - The image for drawing.
+ * @param {Object} imageData - The image data.
+ * @param {Object} canvasData - The canvas data.
+ * @param {Object} options - The options.
+ * @returns {HTMLCanvasElement} The result canvas.
+ */
+export function getSourceCanvas(
+  image,
+  {
+    aspectRatio: imageAspectRatio,
+    naturalWidth: imageNaturalWidth,
+    naturalHeight: imageNaturalHeight,
+    rotate = 0,
+    scaleX = 1,
+    scaleY = 1,
+  },
+  {
+    aspectRatio,
+    naturalWidth,
+    naturalHeight,
+  },
+  {
+    fillColor = 'transparent',
+    imageSmoothingEnabled = true,
+    imageSmoothingQuality = 'low',
+    maxWidth = Infinity,
+    maxHeight = Infinity,
+    minWidth = 0,
+    minHeight = 0,
+  },
+) {
+  const canvas = document.createElement('canvas');
+  const context = canvas.getContext('2d');
+  const maxSizes = getAdjustedSizes({
+    aspectRatio,
+    width: maxWidth,
+    height: maxHeight,
+  });
+  const minSizes = getAdjustedSizes({
+    aspectRatio,
+    width: minWidth,
+    height: minHeight,
+  }, 'cover');
+  const width = Math.min(maxSizes.width, Math.max(minSizes.width, naturalWidth));
+  const height = Math.min(maxSizes.height, Math.max(minSizes.height, naturalHeight));
+
+  // Note: should always use image's natural sizes for drawing as
+  // imageData.naturalWidth === canvasData.naturalHeight when rotate % 180 === 90
+  const destMaxSizes = getAdjustedSizes({
+    aspectRatio: imageAspectRatio,
+    width: maxWidth,
+    height: maxHeight,
+  });
+  const destMinSizes = getAdjustedSizes({
+    aspectRatio: imageAspectRatio,
+    width: minWidth,
+    height: minHeight,
+  }, 'cover');
+  const destWidth = Math.min(
+    destMaxSizes.width,
+    Math.max(destMinSizes.width, imageNaturalWidth),
+  );
+  const destHeight = Math.min(
+    destMaxSizes.height,
+    Math.max(destMinSizes.height, imageNaturalHeight),
+  );
+  const params = [
+    -destWidth / 2,
+    -destHeight / 2,
+    destWidth,
+    destHeight,
+  ];
+
+  canvas.width = normalizeDecimalNumber(width);
+  canvas.height = normalizeDecimalNumber(height);
+  context.fillStyle = fillColor;
+  context.fillRect(0, 0, width, height);
+  context.save();
+  context.translate(width / 2, height / 2);
+  context.rotate((rotate * Math.PI) / 180);
+  context.scale(scaleX, scaleY);
+  context.imageSmoothingEnabled = imageSmoothingEnabled;
+  context.imageSmoothingQuality = imageSmoothingQuality;
+  context.drawImage(image, ...params.map((param) => Math.floor(normalizeDecimalNumber(param))));
+  context.restore();
+  return canvas;
+}
+
+const { fromCharCode } = String;
+
+/**
+ * Get string from char code in data view.
+ * @param {DataView} dataView - The data view for read.
+ * @param {number} start - The start index.
+ * @param {number} length - The read length.
+ * @returns {string} The read result.
+ */
+export function getStringFromCharCode(dataView, start, length) {
+  let str = '';
+
+  length += start;
+
+  for (let i = start; i < length; i += 1) {
+    str += fromCharCode(dataView.getUint8(i));
+  }
+
+  return str;
+}
+
+const REGEXP_DATA_URL_HEAD = /^data:.*,/;
+
+/**
+ * Transform Data URL to array buffer.
+ * @param {string} dataURL - The Data URL to transform.
+ * @returns {ArrayBuffer} The result array buffer.
+ */
+export function dataURLToArrayBuffer(dataURL) {
+  const base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
+  const binary = atob(base64);
+  const arrayBuffer = new ArrayBuffer(binary.length);
+  const uint8 = new Uint8Array(arrayBuffer);
+
+  forEach(uint8, (value, i) => {
+    uint8[i] = binary.charCodeAt(i);
+  });
+
+  return arrayBuffer;
+}
+
+/**
+ * Transform array buffer to Data URL.
+ * @param {ArrayBuffer} arrayBuffer - The array buffer to transform.
+ * @param {string} mimeType - The mime type of the Data URL.
+ * @returns {string} The result Data URL.
+ */
+export function arrayBufferToDataURL(arrayBuffer, mimeType) {
+  const chunks = [];
+
+  // Chunk Typed Array for better performance (#435)
+  const chunkSize = 8192;
+  let uint8 = new Uint8Array(arrayBuffer);
+
+  while (uint8.length > 0) {
+    // XXX: Babel's `toConsumableArray` helper will throw error in IE or Safari 9
+    // eslint-disable-next-line prefer-spread
+    chunks.push(fromCharCode.apply(null, toArray(uint8.subarray(0, chunkSize))));
+    uint8 = uint8.subarray(chunkSize);
+  }
+
+  return `data:${mimeType};base64,${btoa(chunks.join(''))}`;
+}
+
+/**
+ * Get orientation value from given array buffer.
+ * @param {ArrayBuffer} arrayBuffer - The array buffer to read.
+ * @returns {number} The read orientation value.
+ */
+export function resetAndGetOrientation(arrayBuffer) {
+  const dataView = new DataView(arrayBuffer);
+  let orientation;
+
+  // Ignores range error when the image does not have correct Exif information
+  try {
+    let littleEndian;
+    let app1Start;
+    let ifdStart;
+
+    // Only handle JPEG image (start by 0xFFD8)
+    if (dataView.getUint8(0) === 0xFF && dataView.getUint8(1) === 0xD8) {
+      const length = dataView.byteLength;
+      let offset = 2;
+
+      while (offset + 1 < length) {
+        if (dataView.getUint8(offset) === 0xFF && dataView.getUint8(offset + 1) === 0xE1) {
+          app1Start = offset;
+          break;
+        }
+
+        offset += 1;
+      }
+    }
+
+    if (app1Start) {
+      const exifIDCode = app1Start + 4;
+      const tiffOffset = app1Start + 10;
+
+      if (getStringFromCharCode(dataView, exifIDCode, 4) === 'Exif') {
+        const endianness = dataView.getUint16(tiffOffset);
+
+        littleEndian = endianness === 0x4949;
+
+        if (littleEndian || endianness === 0x4D4D /* bigEndian */) {
+          if (dataView.getUint16(tiffOffset + 2, littleEndian) === 0x002A) {
+            const firstIFDOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
+
+            if (firstIFDOffset >= 0x00000008) {
+              ifdStart = tiffOffset + firstIFDOffset;
+            }
+          }
+        }
+      }
+    }
+
+    if (ifdStart) {
+      const length = dataView.getUint16(ifdStart, littleEndian);
+      let offset;
+      let i;
+
+      for (i = 0; i < length; i += 1) {
+        offset = ifdStart + (i * 12) + 2;
+
+        if (dataView.getUint16(offset, littleEndian) === 0x0112 /* Orientation */) {
+          // 8 is the offset of the current tag's value
+          offset += 8;
+
+          // Get the original orientation value
+          orientation = dataView.getUint16(offset, littleEndian);
+
+          // Override the orientation with its default value
+          dataView.setUint16(offset, 1, littleEndian);
+          break;
+        }
+      }
+    }
+  } catch (error) {
+    orientation = 1;
+  }
+
+  return orientation;
+}
+
+/**
+ * Parse Exif Orientation value.
+ * @param {number} orientation - The orientation to parse.
+ * @returns {Object} The parsed result.
+ */
+export function parseOrientation(orientation) {
+  let rotate = 0;
+  let scaleX = 1;
+  let scaleY = 1;
+
+  switch (orientation) {
+    // Flip horizontal
+    case 2:
+      scaleX = -1;
+      break;
+
+    // Rotate left 180°
+    case 3:
+      rotate = -180;
+      break;
+
+    // Flip vertical
+    case 4:
+      scaleY = -1;
+      break;
+
+    // Flip vertical and rotate right 90°
+    case 5:
+      rotate = 90;
+      scaleY = -1;
+      break;
+
+    // Rotate right 90°
+    case 6:
+      rotate = 90;
+      break;
+
+    // Flip horizontal and rotate right 90°
+    case 7:
+      rotate = 90;
+      scaleX = -1;
+      break;
+
+    // Rotate left 90°
+    case 8:
+      rotate = -90;
+      break;
+
+    default:
+  }
+
+  return {
+    rotate,
+    scaleX,
+    scaleY,
+  };
+}