Fix plugin for newer versions of parcel

package.json

@@ -19,18 +19,19 @@
   },
   "peerDependencies": {
     "parcel-bundler": "^1.9.0",
-    "typescript": "^2.4.0"
+    "typescript": "^3.4.5"
   },
   "dependencies": {
     "@babel/code-frame": "^7.0.0-beta.34",
+    "@types/parcel-bundler": "^1.12.0",
     "body-parser": "^1.18.2",
     "chalk": "^2.3.0",
     "comment-json": "^1.1.3",
     "express": "^4.16.2",
-    "find-up": "^2.1.0",
-    "normalize-path": "^2.1.1",
-    "resolve-from": "^4.0.0",
-    "tmp": "^0.0.33",
+    "find-up": "^3.0.0",
+    "normalize-path": "^3.0.0",
+    "resolve-from": "^5.0.0",
+    "tmp": "^0.1.0",
     "tslib": "^1.8.1",
     "uuid": "^3.1.0"
   },
@@ -39,16 +40,16 @@
     "@types/comment-json": "^1.1.0",
     "@types/express": "^4.11.0",
     "@types/find-up": "^2.1.1",
-    "@types/node": "~7.0.0",
-    "@types/resolve-from": "^0.0.18",
-    "@types/tmp": "^0.0.33",
+    "@types/node": "~11.13.8",
+    "@types/resolve-from": "^5.0.1",
+    "@types/tmp": "^0.1.0",
     "@types/uuid": "^3.4.3",
-    "husky": "^0.14.3",
+    "husky": "^2.1.0",
     "npm-run-all": "^4.1.2",
     "parcel-bundler": "^1.2.0",
-    "standard-version": "^4.2.0",
+    "standard-version": "^5.0.2",
     "tslint": "^5.8.0",
-    "tslint-eslint-rules": "^4.1.1",
-    "typescript": "^2.7.2"
+    "tslint-eslint-rules": "^5.4.0",
+    "typescript": "^3.4.5"
   }
 }

src/backend/ipc/server.ts

@@ -10,8 +10,6 @@ export class Server<RQ, RS, K extends Keys<RQ, RS> = Keys<RQ, RS>> {
 	private readonly app = express()
 	private readonly server: HTTPServer
 
-	private listening = false
-
 	constructor(name: string, handler: Handler<RQ, RS>) {
 		const app = this.app.use(bodyParser.json({limit: '10mb'}))
 
@@ -35,7 +33,7 @@ export class Server<RQ, RS, K extends Keys<RQ, RS> = Keys<RQ, RS>> {
 		)
 
 		this.server = app
-			.listen(setSocketPath(name), () => this.listening = true)
+			.listen(setSocketPath(name))
 			.on('error', err => console.error(err))
 	}
 

src/backend/ipc/worker/launcher.ts

@@ -10,7 +10,9 @@ process.on('message', async (message: RequestMessage<{}>) => {
 	try {
 		const result = await handler[message.method](message.data)
 		const response: ResponseMessage<{}> = {
-			id, method, type: 'response', data: {result, error: null}
+			// don't quite understand how this type signature is supposed to
+			// work (I think it's impossible to satisfy), so just cast to any.
+			id, method, type: 'response', data: {result, error: null} as any
 		}
 
 		process.send!(response)

src/frontend/assets/TypeScriptAsset.d.ts

@@ -0,0 +1,5 @@
+declare module "parcel-bundler/src/assets/TypeScriptAsset" {
+    import JSAsset from "parcel-bundler/lib/assets/JSAsset"
+
+    export = JSAsset;
+}

src/frontend/assets/classes/transpile.ts

@@ -4,42 +4,39 @@ import {CompileResult} from '../../../interfaces'
 
 import {JSAsset} from '../js-asset'
 
+import TypescriptAsset from 'parcel-bundler/src/assets/TypeScriptAsset'
+
 export interface TranspileAsset extends JSAsset {
 	config: Promise<Configuration>
 
 	transpile(code: string): Promise<string>
 }
 
-export function MakeTranspileAsset(name: string, options: any): {new(): TranspileAsset} {
-	const {parser} = options
-	const Asset = parser.findParser('file.js') as typeof JSAsset
-
-	return class TSAsset extends Asset {
-		public readonly config: Promise<Configuration>
-		private readonly transpiler: Promise<Transpiler>
+export class MakeTranspileAsset extends TypescriptAsset {
+	public readonly config: Promise<Configuration>
+	private readonly transpiler: Promise<Transpiler>
 
-		constructor() {
-			super(name, options)
+	constructor(name: string, options: any) {
+		super(name, options)
 
-			this.config = loadConfiguration(name, options.rootDir)
-			this.transpiler = this.config.then(config =>
-				new Transpiler(config)
-			)
-		}
+		this.config = loadConfiguration(name, options.rootDir)
+		this.transpiler = this.config.then(config =>
+			new Transpiler(config)
+		)
+	}
 
-		public async parse(code: string) {
-			this.contents = await this.transpile(code)
+	public async parse(code: string) {
+		this.contents = await this.transpile(code)
 
-			// Parse result as ast format through babylon
-			return super.parse(this.contents)
-		}
+		// Parse result as ast format through babylon
+		return super.parse(this.contents)
+	}
 
-		public async transpile(code: string): Promise<string> {
-			const transpiler = await this.transpiler
-			const {sources} = transpiler.transpile(code, this.name)
+	public async transpile(code: string): Promise<string> {
+		const transpiler = await this.transpiler
+		const {sources} = transpiler.transpile(code, this.name)
 
-			return processSourceMaps(this, sources).js
-		}
+		return processSourceMaps(this, sources).js
 	}
 }
 

src/frontend/assets/forked.ts

@@ -2,7 +2,7 @@ import {IPCClient} from '../../backend/worker/client'
 import {MakeTranspileAsset} from './classes/transpile'
 
 export = function(name: string, options: any): any {
-	return new (class extends MakeTranspileAsset(name, options) {
+	return new (class extends MakeTranspileAsset {
 		public async transpile(code: string) {
 			const config = await this.config
 			const reportErrors = !config.typescript.options.noEmitOnError
@@ -25,5 +25,5 @@ export = function(name: string, options: any): any {
 
 			return super.transpile(code)
 		}
-	})()
+	})(name, options)
 }

src/frontend/assets/transpile.ts

@@ -1,5 +1,5 @@
 import {MakeTranspileAsset, TranspileAsset} from './classes/transpile'
 
 export = function(name: string, options: any): TranspileAsset {
-	return new (MakeTranspileAsset(name, options))()
+	return new MakeTranspileAsset(name, options)
 }

src/frontend/assets/typescript.ts

@@ -2,49 +2,47 @@ import {Configuration, loadConfiguration} from '../../backend/config-loader'
 import {IPCClient} from '../../backend/worker/client'
 
 import {processSourceMaps} from '../../exports'
-import {JSAsset} from './js-asset'
 
-export = function MakeTranspileAsset(name: string, options: any) {
-	const {parser} = options
-	const Asset = parser.findParser('file.js') as typeof JSAsset
+import TypescriptAsset from 'parcel-bundler/src/assets/TypeScriptAsset'
 
-	return new (class TSAsset extends Asset {
-		private readonly config: Promise<Configuration>
+class TSAsset extends TypescriptAsset {
+	private readonly config: Promise<Configuration>
 
-		constructor() {
-			super(name, options)
+	constructor(name: string, options: any) {
+		super(name, options)
 
-			this.config = loadConfiguration(name, options.rootDir)
-		}
+		this.config = loadConfiguration(name, options.rootDir)
+	}
 
-		public async parse(): Promise<any> {
-			const config = await this.config
-			const reportErrors = !config.typescript.options.noEmitOnError
-			const result = await IPCClient.compile({
-				file: this.name,
-				rootDir: this.options.rootDir,
-				reportErrors
-			})
+	public async parse(): Promise<any> {
+		const config = await this.config
+		const reportErrors = !config.typescript.options.noEmitOnError
+		const result = await IPCClient.compile({
+			file: this.name,
+			rootDir: this.options.rootDir,
+			reportErrors
+		})
 
-			if(!reportErrors) {
-				const {diagnostics} = result
+		if(!reportErrors) {
+			const {diagnostics} = result
 
-				if(diagnostics) {
-					console.error(diagnostics)
+			if(diagnostics) {
+				console.error(diagnostics)
 
-					// tslint:disable:no-string-throw
-					throw 'TypeScript errors were found while compiling'
-				}
+				// tslint:disable:no-string-throw
+				throw 'TypeScript errors were found while compiling'
 			}
+		}
 
-			this.contents = processSourceMaps(this, result.sources).js
+		this.contents = processSourceMaps(this, result.sources).js
 
-			// Parse result as ast format through babylon
-			return super.parse(this.contents)
-		}
+		// Parse result as ast format through babylon
+		return super.parse(this.contents)
+	}
 
-		public generateErrorMessage(err: any) {
-			return err.stack || err.message || err
-		}
-	})()
+	public generateErrorMessage(err: any) {
+		return err.stack || err.message || err
+	}
 }
+
+export = TSAsset

tsconfig.json

@@ -16,6 +16,7 @@
 		"importHelpers": true,
 		"downlevelIteration": true,
 		"moduleResolution": "node",
+		"esModuleInterop": true,
 
 		"rootDir": "src",
 		"outDir": "build"

tslint.json

@@ -4,7 +4,6 @@
 		"no-duplicate-variable": true,
 		"no-string-literal": false,
 		"no-console": [false],
-		"no-unused-variable": [true],
 		"whitespace": [
 			true,
 			"check-operator", "check-separator", "check-type", "check-typecast"