STASH polyfills in dev-utils

Author: lobsterkatie

packages/dev-utils/.gitignore

@@ -0,0 +1 @@
+!test/jsPolyfills/originals.d.ts

packages/dev-utils/jest.config.js

@@ -1 +1,9 @@
-module.exports = require('../../jest/jest.config.js');
+const baseConfig = require('../../jest/jest.config.js');
+
+module.exports = {
+  ...baseConfig,
+  transform: {
+    '^.+\\.ts$': 'ts-jest',
+    '^.+\\.js$': 'ts-jest',
+  },
+};

packages/dev-utils/package.json

@@ -25,7 +25,7 @@
     "build:dev": "run-s build",
     "build:es5": "yarn build:cjs # *** backwards compatibility - remove in v7 ***",
     "build:esm": "tsc -p tsconfig.esm.json",
-    "build:rollup": "rollup -c rollup.npm.config.js",
+    "build:rollup": "yarn rollup -c rollup.npm.config.js && cp src/jsPolyfills/README.md build/cjs/jsPolyfills && cp src/jsPolyfills/README.md build/esm/jsPolyfills",
     "build:types": "tsc -p tsconfig.types.json",
     "build:watch": "run-p build:cjs:watch build:esm:watch build:types:watch",
     "build:cjs:watch": "tsc -p tsconfig.cjs.json --watch",

packages/dev-utils/src/index.ts

@@ -1 +1,3 @@
+export * as jsPolyfills from './jsPolyfills';
+
 // empty placeholder