Backports #126 to the 1.x branch

.github/workflows/publish.yaml

@@ -11,9 +11,10 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: 12
+          node-version: 14
           registry-url: https://registry.npmjs.org/
       - run: npm i
+      - run: node test/validateModuleExportsMatchCommonJS/index.js
       - run: npm publish
         env:
-          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}

modules/index.js

@@ -0,0 +1,51 @@
+import tslib from '../tslib.js';
+const {
+    __extends,
+    __assign,
+    __rest,
+    __decorate,
+    __param,
+    __metadata,
+    __awaiter,
+    __generator,
+    __exportStar,
+    __createBinding,
+    __values,
+    __read,
+    __spread,
+    __spreadArrays,
+    __await,
+    __asyncGenerator,
+    __asyncDelegator,
+    __asyncValues,
+    __makeTemplateObject,
+    __importStar,
+    __importDefault,
+    __classPrivateFieldGet,
+    __classPrivateFieldSet,
+} = tslib;
+export {
+    __extends,
+    __assign,
+    __rest,
+    __decorate,
+    __param,
+    __metadata,
+    __awaiter,
+    __generator,
+    __exportStar,
+    __createBinding,
+    __values,
+    __read,
+    __spread,
+    __spreadArrays,
+    __await,
+    __asyncGenerator,
+    __asyncDelegator,
+    __asyncValues,
+    __makeTemplateObject,
+    __importStar,
+    __importDefault,
+    __classPrivateFieldGet,
+    __classPrivateFieldSet,
+};

modules/package.json

@@ -0,0 +1,3 @@
+{
+    "type": "module"
+}

package.json

@@ -2,7 +2,7 @@
     "name": "tslib",
     "author": "Microsoft Corp.",
     "homepage": "https://www.typescriptlang.org/",
-    "version": "1.13.0",
+    "version": "1.14.0",
     "license": "0BSD",
     "description": "Runtime library for TypeScript helper functions",
     "keywords": [
@@ -25,5 +25,12 @@
     "module": "tslib.es6.js",
     "jsnext:main": "tslib.es6.js",
     "typings": "tslib.d.ts",
-    "sideEffects": false
+    "sideEffects": false,
+    "exports": {
+        ".": {
+            "import": "./modules/index.js",
+            "default": "./tslib.js"
+        },
+        "./": "./"
+    }
 }

test/validateModuleExportsMatchCommonJS/index.js

@@ -0,0 +1,23 @@
+// When on node 14, it validates that all of the commonjs exports
+// are correctly re-exported for es modules importers.
+
+const nodeMajor = Number(process.version.split(".")[0].slice(1))
+if (nodeMajor < 14) {
+  console.log("Skipping because node does not support module exports.")
+  process.exit(0)
+}
+
+// ES Modules import via the ./modules folder
+import * as esTSLib from "../../modules/index.js"
+
+// Force a commonjs resolve
+import { createRequire } from "module";
+const commonJSTSLib = createRequire(import.meta.url)("../../tslib.js");
+
+for (const key in commonJSTSLib) {
+  if (commonJSTSLib.hasOwnProperty(key)) {
+    if(!esTSLib[key]) throw new Error(`ESModules is missing ${key} - it needs to be re-exported in  ./modules/index.js`)
+  }
+}
+
+console.log("All exports in commonjs are available for es module consumers.")

test/validateModuleExportsMatchCommonJS/package.json

@@ -0,0 +1,6 @@
+{
+  "type": "module",
+  "scripts": {
+    "test": "node index.js"
+  }
+}