Completed steps up to downloading forge universal jar for 1.8-1.12.

Next step is processing the version.json and transforming it into a deliverable module.

src/resolver/forge/adapter/forge113.resolver.ts

@@ -0,0 +1,27 @@
+import { Module } from '../../../model/spec/module'
+import { ForgeResolver } from '../forge.resolver'
+
+export class Forge113Adapter extends ForgeResolver {
+
+    public static isForVersion(version: string) {
+        return Forge113Adapter.isVersionAcceptable(version, [13, 14, 15])
+    }
+
+    constructor(
+        absoluteRoot: string,
+        relativeRoot: string,
+        minecraftVersion: string,
+        forgeVersion: string
+    ) {
+        super(absoluteRoot, relativeRoot, minecraftVersion, forgeVersion)
+    }
+
+    public async getModule(): Promise<Module> {
+        return null as unknown as Module
+    }
+
+    public isForVersion(version: string): boolean {
+        return Forge113Adapter.isForVersion(version)
+    }
+
+}

src/resolver/forge/adapter/forge18.resolver.ts

@@ -1,10 +1,52 @@
 import { Module } from '../../../model/spec/module'
+import { ForgeRepoStructure } from '../../../model/struct/repo/forgerepo.struct'
 import { ForgeResolver } from '../forge.resolver'
 
 export class Forge18Adapter extends ForgeResolver {
 
+    public static isForVersion(version: string) {
+        return Forge18Adapter.isVersionAcceptable(version, [8, 9, 10, 11, 12])
+    }
+
+    constructor(
+        absoluteRoot: string,
+        relativeRoot: string,
+        minecraftVersion: string,
+        forgeVersion: string
+    ) {
+        super(absoluteRoot, relativeRoot, minecraftVersion, forgeVersion)
+    }
+
     public async getModule(): Promise<Module> {
+        await this.getForgeByVersion()
         return null as unknown as Module
     }
 
+    public isForVersion(version: string) {
+        return Forge18Adapter.isForVersion(version)
+    }
+
+    public async getForgeByVersion() {
+        const forgeRepo = this.repoStructure.getForgeRepoStruct()
+        const artifactVersion = `${this.minecraftVersion}-${this.forgeVersion}`
+        const targetLocalPath = forgeRepo.getLocalForge(artifactVersion, 'universal')
+        console.debug(`Checking for forge version at ${targetLocalPath}..`)
+        if (!await forgeRepo.artifactExists(targetLocalPath)) {
+            console.debug(`Forge not found locally, initializing download..`)
+            await forgeRepo.downloadArtifact(
+                this.REMOTE_REPOSITORY,
+                ForgeRepoStructure.FORGE_GROUP,
+                ForgeRepoStructure.FORGE_ARTIFACT,
+                artifactVersion, 'universal', 'jar')
+        } else {
+            console.debug('Using locally discovered forge.')
+        }
+        console.debug(`Beginning processing of Forge v${this.forgeVersion} (Minecraft ${this.minecraftVersion})`)
+    }
+
+    // TODO
+    // extract manifest
+    // parse manifest
+    // return module
+
 }