Migrate source to TypeScript (/typescript eslint config)

eslint.config.mjs

@@ -1,48 +1,15 @@
-import javascriptConfig from '@playcanvas/eslint-config/javascript';
-import prettierConfig from 'eslint-config-prettier/flat';
-import globals from 'globals';
+import typescriptConfig from '@playcanvas/eslint-config/typescript';
 
 export default [
-    ...javascriptConfig,
+    ...typescriptConfig,
     {
-        ignores: ['dist/**', 'types/**', 'test/fixtures/**']
+        ignores: ['types/**', 'test/fixtures/**']
     },
     {
-        languageOptions: {
-            ecmaVersion: 2022,
-            sourceType: 'module',
-            globals: {
-                ...globals.browser,
-                ...globals.mocha,
-                ...globals.node
-            }
-        }
-    },
-    {
-        rules: {
-            'no-unused-expressions': 'off',
-            'jsdoc/check-tag-names': 'off',
-            'import/no-unresolved': 'off'
-        }
-    },
-    {
-        files: ['**/*.mjs'],
-        languageOptions: {
-            globals: {
-                ...globals.node
-            }
-        },
+        // chai assertions like expect(x).to.be.true are expression statements
+        files: ['test/**/*.test.js'],
         rules: {
-            'import/no-named-as-default': 'off'
+            '@typescript-eslint/no-unused-expressions': 'off'
         }
-    },
-    {
-        // Configuration specific to test files
-        files: ['**/*.test.js'], // Match test files
-
-        rules: {
-            'prefer-arrow-callback': 'off' // Allow function expressions in test files
-        }
-    },
-    prettierConfig
+    }
 ];

package.json

@@ -1,18 +1,23 @@
 {
     "name": "@playcanvas/attribute-parser",
     "version": "1.10.3",
-    "author": "PlayCanvas <support@playcanvas.com>",
-    "homepage": "https://github.com/playcanvas/attribute-parser#readme",
     "description": "The PlayCanvas Attribute Parser",
     "keywords": [
         "playcanvas",
         "attribute",
         "parser"
     ],
+    "homepage": "https://github.com/playcanvas/attribute-parser#readme",
+    "bugs": {
+        "url": "https://github.com/playcanvas/attribute-parser/issues"
+    },
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/playcanvas/attribute-parser.git"
+    },
     "license": "MIT",
+    "author": "PlayCanvas <support@playcanvas.com>",
     "type": "module",
-    "main": "dist/index.js",
-    "types": "types/index.d.ts",
     "exports": {
         ".": {
             "types": "./types/index.d.ts",
@@ -22,41 +27,13 @@
         },
         "./libs": "./dist/libs.d.ts"
     },
-    "bugs": {
-        "url": "https://github.com/playcanvas/attribute-parser/issues"
-    },
-    "repository": {
-        "type": "git",
-        "url": "git+https://github.com/playcanvas/attribute-parser.git"
-    },
+    "main": "dist/index.js",
+    "types": "types/index.d.ts",
     "files": [
-        "dist/index.js",
         "dist/index.node.mjs",
         "dist/libs.d.ts",
-        "types",
-        "README.md",
-        "LICENSE.md"
+        "types"
     ],
-    "devDependencies": {
-        "@rollup/plugin-commonjs": "28.0.9",
-        "@rollup/plugin-node-resolve": "16.0.3",
-        "@rollup/plugin-swc": "0.4.1",
-        "@swc/core": "1.15.43",
-        "chai": "5.3.3",
-        "eslint-config-prettier": "10.1.8",
-        "globals": "16.5.0",
-        "mocha": "11.7.6",
-        "playcanvas": "2.12.3",
-        "prettier": "3.9.4",
-        "publint": "0.3.21",
-        "rollup": "4.62.2"
-    },
-    "dependencies": {
-        "@playcanvas/eslint-config": "3.0.0-beta.8",
-        "@typescript/vfs": "^1.6.0",
-        "eslint": "^9.0.0",
-        "typescript": "^5.5.3"
-    },
     "scripts": {
         "build": "rollup -c && npm run build:types",
         "build:types": "tsc -p tsconfig.build.json",
@@ -69,7 +46,26 @@
         "typecheck": "tsc --noEmit",
         "watch": "rollup -c -w"
     },
+    "dependencies": {
+        "@playcanvas/eslint-config": "3.0.0-beta.8",
+        "@typescript/vfs": "^1.6.0",
+        "eslint": "^9.0.0",
+        "typescript": "^5.5.3"
+    },
+    "devDependencies": {
+        "@rollup/plugin-commonjs": "28.0.9",
+        "@rollup/plugin-node-resolve": "16.0.3",
+        "@rollup/plugin-swc": "0.4.1",
+        "@swc/core": "1.15.43",
+        "@types/node": "26.1.0",
+        "chai": "5.3.3",
+        "mocha": "11.7.6",
+        "playcanvas": "2.12.3",
+        "prettier": "3.9.4",
+        "publint": "0.3.21",
+        "rollup": "4.62.2"
+    },
     "engines": {
-        "node": ">=18.0.0"
+        "node": ">=22.0.0"
     }
 }

rollup.config.mjs

@@ -8,11 +8,15 @@ import ts from 'typescript';
 
 const production = process.env.NODE_ENV === 'production';
 
-// Concatenates the TypeScript compiler options into a single file
-const types = knownLibFilesForCompilerOptions({ target: ts.ScriptTarget.ES2023 }, ts).reduce((acc, file) => {
-    const src = fs.readFileSync(`node_modules/typescript/lib/${file}`, 'utf8');
-    return `${acc}// ${file}\n${src}\n\n`;
-}, '');
+// Concatenates the TypeScript compiler options into a single file. The known lib list can
+// include files removed in newer TypeScript versions (e.g. lib.es2022.sharedmemory.d.ts),
+// so skip any that no longer exist.
+const types = knownLibFilesForCompilerOptions({ target: ts.ScriptTarget.ES2023 }, ts)
+    .filter((file) => fs.existsSync(`node_modules/typescript/lib/${file}`))
+    .reduce((acc, file) => {
+        const src = fs.readFileSync(`node_modules/typescript/lib/${file}`, 'utf8');
+        return `${acc}// ${file}\n${src}\n\n`;
+    }, '');
 fs.mkdirSync('dist', { recursive: true });
 fs.writeFileSync('dist/libs.d.ts', types);
 
@@ -29,7 +33,7 @@ const swcPlugin = () =>
 // Browser build: bundles typescript and @typescript/vfs and stubs out node built-ins,
 // for in-browser consumers (e.g. the editor), which supply lib types via a CDN.
 const browser = {
-    input: 'src/index.js',
+    input: 'src/index.ts',
     output: {
         dir: 'dist',
         format: 'esm'
@@ -42,7 +46,8 @@ const browser = {
         }),
         resolve({
             browser: true, // This instructs the plugin to resolve for the browser
-            preferBuiltins: false // Prefer the local versions of built-ins instead of Node.js versions
+            preferBuiltins: false, // Prefer the local versions of built-ins instead of Node.js versions
+            extensions: ['.js', '.ts']
         }),
         swcPlugin()
     ]
@@ -52,7 +57,7 @@ const browser = {
 // (real os/fs/path and a native require). The browser build stubs these out, which breaks
 // createDefaultMapFromNodeModules and TypeScript's getNodeSystem() under node.
 const node = {
-    input: 'src/index.js',
+    input: 'src/index.ts',
     external: [/^node:/, 'typescript', '@typescript/vfs'],
     output: {
         dir: 'dist',
@@ -62,7 +67,8 @@ const node = {
     plugins: [
         resolve({
             exportConditions: ['node'],
-            preferBuiltins: true
+            preferBuiltins: true,
+            extensions: ['.js', '.ts']
         }),
         swcPlugin()
     ]