Add type model.

src/model/module.ts

@@ -1,5 +1,6 @@
 import { Artifact } from './artifact'
 import { Required } from './required'
+import { Type } from './type'
 
 export interface Module {
 
@@ -27,7 +28,7 @@ export interface Module {
     /**
      * The type of the module.
      */
-    type: string
+    type: Type
 
     /**
      * Defines whether or not the module is required. If omitted, then the module will be required.

src/model/type.ts

@@ -0,0 +1,42 @@
+export const Types: {[property: string]: Type} = {
+
+    Library: {
+        id: 'Library',
+        defaultExtension: 'jar'
+    },
+    ForgeHosted: {
+        id: 'ForgeHosted',
+        defaultExtension: 'jar'
+    },
+    Forge: {
+        id: 'Forge',
+        defaultExtension: 'jar'
+    },
+    LiteLoader: {
+        id: 'LiteLoader',
+        defaultExtension: 'jar'
+    },
+    ForgeMod: {
+        id: 'ForgeMod',
+        defaultExtension: 'jar'
+    },
+    LiteMod: {
+        id: 'LiteMod',
+        defaultExtension: 'litemod'
+    },
+    File: {
+        id: 'File'
+    },
+    VersionManifest: {
+        id: 'VersionManifest',
+        defaultExtension: 'json'
+    }
+
+}
+
+export interface Type {
+
+    id: string
+    defaultExtension?: string
+
+}