test: De-Typescriptify jest tests

packages/npm-packages/ruby-3.2-wasm-wasi/package.json

@@ -45,8 +45,10 @@
   ],
   "license": "MIT",
   "devDependencies": {
+    "@rollup/plugin-inject": "^5.0.5",
     "@rollup/plugin-json": "^6.0.1",
-    "rollup": "^4.6.1"
+    "rollup": "^4.6.1",
+    "rollup-plugin-polyfill-node": "^0.13.0"
   },
   "dependencies": {
     "@ruby/wasm-wasi": "^2.0.0"

packages/npm-packages/ruby-wasm-wasi/package.json

@@ -55,16 +55,12 @@
     "build": "npm run build:rollup && npm run build:tsc && npm run build:static && ./tools/post-build.sh ./dist"
   },
   "devDependencies": {
-    "@babel/core": "^7.19.3",
-    "@babel/preset-env": "^7.23.5",
-    "@babel/preset-typescript": "^7.18.6",
     "@rollup/plugin-inject": "^5.0.5",
     "@rollup/plugin-node-resolve": "^15.1.0",
     "@rollup/plugin-typescript": "^11.1.2",
     "@types/jest": "^29.5.3",
     "@types/node": "20.8.10",
     "@wasmer/wasi": "^1.2.2",
-    "babel-jest": "^29.7.0",
     "jest": "^29.6.2",
     "prettier": "^3.0.0",
     "rollup": "^4.6.1",

packages/npm-packages/ruby-wasm-wasi/test/eval.test.ts → packages/npm-packages/ruby-wasm-wasi/test/eval.test.js

@@ -1,4 +1,4 @@
-import { initRubyVM } from "./init";
+const { initRubyVM } = require("./init");
 
 describe("Ruby code evaluation", () => {
   test("empty expression", async () => {

packages/npm-packages/ruby-wasm-wasi/test/eval_async.test.ts → packages/npm-packages/ruby-wasm-wasi/test/eval_async.test.js

@@ -1,4 +1,4 @@
-import { initRubyVM } from "./init";
+const { initRubyVM } = require("./init");
 
 describe("Async Ruby code evaluation", () => {
   test("async eval over microtasks", async () => {

packages/npm-packages/ruby-wasm-wasi/test/gc.test.ts → packages/npm-packages/ruby-wasm-wasi/test/gc.test.js

@@ -1,5 +1,4 @@
-import { RbValue } from "../src/index";
-import { initRubyVM } from "./init";
+const { initRubyVM } = require("./init");
 
 describe("GC integration", () => {
   test("Wrapped Ruby object should live until wrapper will be released", async () => {
@@ -10,11 +9,11 @@ describe("GC integration", () => {
         imports.call(:mark_js_object_live, JS::Object.wrap(Object.new))
       end
     `);
-    const livingObjects = new Set<RbValue>();
+    const livingObjects = new Set();
     run.call(
       "call",
       vm.wrap({
-        mark_js_object_live: (object: RbValue) => {
+        mark_js_object_live: (object) => {
           livingObjects.add(object);
         },
       }),
@@ -27,8 +26,8 @@ describe("GC integration", () => {
   });
 
   test("protect exported Ruby objects", async () => {
-    function dropRbValue(value: RbValue) {
-      (value as any).inner.drop();
+    function dropRbValue(value) {
+      value.inner.drop();
     }
     const vm = await initRubyVM();
     const initialGCCount = Number(vm.eval("GC.count").toString());

packages/npm-packages/ruby-wasm-wasi/test/init.ts → packages/npm-packages/ruby-wasm-wasi/test/init.js

@@ -1,7 +1,7 @@
-import fs from "fs/promises";
-import path from "path";
-import { WASI } from "wasi";
-import { RubyVM } from "../src/index";
+const fs = require("fs/promises");
+const path = require("path");
+const { WASI } = require("wasi");
+const { RubyVM } = require("../dist/cjs/index");
 
 const rubyModule = (async () => {
   let binaryPath;
@@ -19,7 +19,7 @@ const rubyModule = (async () => {
   return await WebAssembly.compile(binary.buffer);
 })();
 
-export const initRubyVM = async (
+const initRubyVM = async (
   { suppressStderr } = { suppressStderr: false },
 ) => {
   let preopens = {};
@@ -47,3 +47,5 @@ export const initRubyVM = async (
   vm.initialize();
   return vm;
 };
+
+module.exports = { initRubyVM };

packages/npm-packages/ruby-wasm-wasi/test/package.test.ts → packages/npm-packages/ruby-wasm-wasi/test/package.test.js

@@ -1,10 +1,10 @@
-import fs from "fs/promises";
-import path from "path";
-import { WASI } from "wasi";
-import { RubyVM } from "../dist/esm/index";
-import { DefaultRubyVM } from "../dist/esm/node";
+const fs = require("fs/promises");
+const path = require("path");
+const { WASI } = require("wasi");
+const { RubyVM } = require("../dist/cjs/index");
+const { DefaultRubyVM } = require("../dist/cjs/node");
 
-const initRubyVM = async (rubyModule: WebAssembly.Module, args: string[]) => {
+const initRubyVM = async (rubyModule, args) => {
   const wasi = new WASI();
   const vm = new RubyVM();
   const imports = {
@@ -34,10 +34,10 @@ describe("Packaging validation", () => {
     return;
   }
 
-  const moduleCache = new Map<string, WebAssembly.Module>();
-  const loadWasmModule = async (file: string) => {
+  const moduleCache = new Map();
+  const loadWasmModule = async (file) => {
     if (moduleCache.has(file)) {
-      return moduleCache.get(file)!;
+      return moduleCache.get(file);
     }
     const binary = await fs.readFile(
       path.join(process.env.RUBY_NPM_PACKAGE_ROOT, `./dist/${file}`),

packages/npm-packages/ruby-wasm-wasi/test/to_js.test.ts → packages/npm-packages/ruby-wasm-wasi/test/to_js.test.js

@@ -1,4 +1,4 @@
-import { initRubyVM } from "./init";
+const { initRubyVM } = require("./init");
 
 describe("RbValue#toJS", () => {
   test.each([

packages/npm-packages/ruby-wasm-wasi/test/vm.test.ts → packages/npm-packages/ruby-wasm-wasi/test/vm.test.js

@@ -1,4 +1,4 @@
-import { initRubyVM } from "./init";
+const { initRubyVM } = require("./init");
 
 describe("RubyVM", () => {
   test("empty expression", async () => {
@@ -148,7 +148,7 @@ eval:11:in \`<main>'`);
       setVM.call("call", vm.wrap(vm));
 
       // HACK: We need to capture all promises to avoid unhandled promise rejection
-      const promises: Promise<any>[] = [];
+      const promises = [];
       const _Promise = global.Promise;
       const spy = jest.spyOn(global, "Promise").mockImplementation((future) => {
         const promise = new _Promise(future);
@@ -158,7 +158,7 @@ eval:11:in \`<main>'`);
 
       vm.evalAsync(code);
 
-      const rejections: Error[] = [];
+      const rejections = [];
       for (const promise of promises) {
         try {
           await promise;

packages/npm-packages/ruby-wasm-wasi/test/wrap.test.ts → packages/npm-packages/ruby-wasm-wasi/test/wrap.test.js

@@ -1,4 +1,4 @@
-import { initRubyVM } from "./init";
+const { initRubyVM } = require("./init");
 
 describe("RubyVM#wrap", () => {
   test("Wrap arbitrary JS object to RbValue", async () => {