Exclude typescript from play_bundle

Reduces minified `play_bundle.js` size from 4.59 MiB to 2.37 MiB.

Author: ark120202

package.json

@@ -25,6 +25,7 @@
         "html-loader": "^0.5.5",
         "html-webpack-plugin": "^3.2.0",
         "monaco-editor-webpack-plugin": "^1.8.2",
+        "node-libs-browser": "^2.2.1",
         "pnp-webpack-plugin": "^1.5.0",
         "prettier": "^1.19.1",
         "raw-loader": "^4.0.0",

src/playground/index.ts

@@ -8,7 +8,7 @@ import TSTLWorker = require("worker-loader?name=tstl.worker.js!./tstlWorker");
 // @ts-ignore
 import FengariWorker = require("worker-loader?name=fengari.worker.js!./fengariWorker");
 
-import * as tstl from "typescript-to-lua/dist/LuaAST";
+import * as lua from "typescript-to-lua/dist/LuaAST";
 
 const renderjson = require("renderjson");
 const tstlPackageJson = require("typescript-to-lua/package.json");
@@ -127,7 +127,7 @@ if (container && exampleLua && astLua) {
             astLua.appendChild(
                 renderjson.set_show_to_level(1).set_replacer((name: string, val: any) => {
                     if (name === "kind") {
-                        return tstl.SyntaxKind[val];
+                        return lua.SyntaxKind[val];
                     }
                     return val;
                 })(event.data.luaAST),

webpack.config.js

@@ -5,6 +5,7 @@ const HtmlWebpackPlugin = require("html-webpack-plugin");
 const PnpWebpackPlugin = require("pnp-webpack-plugin");
 
 const resolve = query => path.resolve(__dirname, query);
+const emptyModulePath = require.resolve("node-libs-browser/mock/empty.js");
 
 /** @type {import("webpack").Configuration} */
 module.exports = {
@@ -56,5 +57,13 @@ module.exports = {
 
         // Ignore pnpapi reference in patched typescript source
         new webpack.IgnorePlugin(/pnpapi/),
+
+        // Exclude `typescript` from `play_bundle` referenced from `typescript-to-lua/dist/LuaAST`
+        new webpack.NormalModuleReplacementPlugin(/typescript/, resource => {
+            const { issuer, compiler } = (resource.resourceResolveData && resource.resourceResolveData.context) || {};
+            if (issuer === require.resolve("typescript-to-lua/dist/LuaAST") && compiler !== "worker") {
+                resource.resource = emptyModulePath;
+            }
+        }),
     ],
 };

yarn.lock

@@ -6353,6 +6353,7 @@ resolve@^1.13.1:
     html-webpack-plugin: ^3.2.0
     monaco-editor: ^0.19.3
     monaco-editor-webpack-plugin: ^1.8.2
+    node-libs-browser: ^2.2.1
     pnp-webpack-plugin: ^1.5.0
     prettier: ^1.19.1
     raw-loader: ^4.0.0