fix(worker): use terser for web-worker minification

WORKER_LICENSES.txt

@@ -0,0 +1,10 @@
+/**
+ * Copyright 2021 Spokestack, Inc. All Rights Reserved.
+ * Licensed under the MIT license.
+ * https://github.com/spokestack/node-spokestack/blob/develop/MIT-License.txt
+ */
+/**
+ * tensorflow.js bundled in this web worker
+ * Copyright 2020 Google LLC. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ */

compress.ts

@@ -0,0 +1,17 @@
+import { minify } from 'terser'
+const fs = require('fs')
+
+const license = fs.readFileSync('./WORKER_LICENSES.txt', 'utf8')
+const code = fs.readFileSync('./dist/spokestack-web-worker.js', 'utf8')
+minify(code, {
+  format: {
+    comments: false
+  },
+  compress: {
+    typeofs: false
+  }
+}).then((result) => {
+  const minified = result.code
+  console.log(minified?.length)
+  fs.writeFileSync('./dist/spokestack-web-worker.min.js', license + minified)
+})

examples/with-next/server/index.ts

@@ -25,7 +25,7 @@ app.prepare().then(() => {
 
   expressApp.use(
     '/spokestack-web-worker.js',
-    express.static(`./node_modules/spokestack/dist/web-worker${dev ? '' : '.min'}.js`)
+    express.static(`./node_modules/spokestack/dist/spokestack-web-worker${dev ? '' : '.min'}.js`)
   )
 
   expressApp.use('/graphql', bodyParser.json(), (req, res) => {

package.json

@@ -10,7 +10,7 @@
     "docs": "typedoc --excludePrivate --plugin typedoc-plugin-markdown --hideBreadcrumbs --out docs --readme none src/index.ts src/client.ts && node tasks/docs.js",
     "format": "eslint . --fix && prettier --write \"**/*.ts\" \"**/*.js\" \"**/*.md\" \"**/*.json\"",
     "lint": "concurrently --raw \"eslint .\" \"npm run prettier\" \"npm run typescript\"",
-    "minify:worker": "uglifyjs --compress --mangle --output dist/web-worker.min.js -- dist/web-worker.js",
+    "minify:worker": "ts-node --skip-project compress.ts",
     "prepare": "husky install && npm run build",
     "prettier": "prettier --check \"**/*.md\" \"**/*.json\"",
     "release": "release-it",
@@ -80,11 +80,11 @@
     "rollup": "^2.44.0",
     "rollup-plugin-typescript2": "^0.30.0",
     "sinon": "^10.0.0",
+    "terser": "^5.6.1",
     "ts-node": "^9.1.1",
     "typedoc": "^0.20.33",
     "typedoc-plugin-markdown": "^3.6.0",
-    "typescript": "^4.2.3",
-    "uglify-js": "^3.13.3"
+    "typescript": "^4.2.3"
   },
   "prettier": {
     "printWidth": 100,
@@ -139,9 +139,7 @@
     "dist",
     "examples",
     ".next",
-    "*.d.ts",
-    "tfjs.js",
-    "web-worker.js"
+    "*.d.ts"
   ],
   "release-it": {
     "hooks": {

rollup.config.js

@@ -84,7 +84,7 @@ const worker = {
   ],
   output: {
     format: 'iife',
-    file: 'dist/web-worker.js'
+    file: 'dist/spokestack-web-worker.js'
   },
   watch: {
     include: ['src/worker/**']

src/client/pipeline.ts

@@ -129,7 +129,7 @@ let pipeline: SpeechPipeline | undefined
  * ```ts
  * app.use(
  *   '/spokestack-web-worker.js',
- *   express.static(`./node_modules/spokestack/dist/web-worker.min.js`)
+ *   express.static(`./node_modules/spokestack/dist/spokestack-web-worker.min.js`)
  * )
  * ```
  *

src/worker/index.ts

@@ -1,10 +1,3 @@
-/**
- * @license
- * Copyright 2021 Spokestack, Inc. All Rights Reserved.
- * Licensed under the MIT license.
- * https://github.com/spokestack/node-spokestack/blob/develop/MIT-License.txt
- */
-
 import { SpeechConfig, SpeechEvent, SpeechEventType, Stage } from '../client/types'
 import { SpeechContext, SpeechProcessor } from './types'
 

src/worker/tsconfig.json

@@ -3,6 +3,6 @@
   "compilerOptions": {
     "lib": ["WebWorker", "esnext"]
   },
-  "exclude": ["node_modules"],
+  "exclude": ["node_modules", "compress.ts"],
   "include": ["./**/*.ts"]
 }

tsconfig.json

@@ -19,5 +19,13 @@
     "strict": true,
     "target": "es5"
   },
-  "exclude": ["client.d.ts", "node_modules", "examples", "test", "dist", "src/worker"]
+  "exclude": [
+    "client.d.ts",
+    "compress.ts",
+    "node_modules",
+    "examples",
+    "test",
+    "dist",
+    "src/worker"
+  ]
 }