Port DataLoader to TypeScript

.github/workflows/validation.yml

@@ -1,6 +1,6 @@
-name: Flow check, Lint and Tests 
+name: Typescript check, Lint and Tests
 
-on: push
+on: [push, pull_request]
 
 jobs:
   validation:
@@ -17,13 +17,13 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: 'yarn'
+          cache: 'npm'
 
-      - name: Install Dependencies using Yarn
-        run: yarn --ignore-engines
+      - name: Install Dependencies using NPM
+        run: npm install
 
       - name: Tests
-        run: yarn test:ci 
+        run: npm run test:ci
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4

.gitignore

@@ -9,8 +9,3 @@ npm-debug.log
 node_modules
 coverage
 dist
-
-# Generated with release scripts
-index.d.ts
-index.js
-index.js.flow

CONTRIBUTING.md

@@ -17,14 +17,14 @@ We actively welcome your pull requests for documentation and code.
 4. Ensure the test suite passes.
 5. Make sure your code lints.
 6. If you haven't already, complete the Contributor License Agreement ("CLA").
-7. Run `yarn changeset` and describe the change you're proposing. Commit the file it creates in `.changeset` to the repo. [You can read more about changeset here.](https://github.com/changesets/changesets)
+7. Run `npx @changesets/cli` and describe the change you're proposing. Commit the file it creates in `.changeset` to the repo. [You can read more about changeset here.](https://github.com/changesets/changesets)
 8. Open a Pull Request so we can review and incorporate your change.
 
 ## Releases
 
 To release a new version:
-1. Run `yarn changeset version` to bump the version of the package.
-2. Run `yarn release` this will create a new release on GitHub and publish the package to NPM. 
+1. Run `npx @changesets/cli version` to bump the version of the package.
+2. Run `npx @changesets/cli publish` this will create a new release on GitHub and publish the package to NPM. 
 
 ## Issues
 

README.md

@@ -653,9 +653,8 @@ DataLoader and how it works.
 [graphql-js]: https://github.com/graphql/graphql-js
 [cache algorithms]: https://en.wikipedia.org/wiki/Cache_algorithms
 [express]: http://expressjs.com/
-[babel/polyfill]: https://babeljs.io/docs/usage/polyfill/
 [lru_map]: https://github.com/rsms/js-lru
-[source code]: https://github.com/graphql/dataloader/blob/main/src/index.js
+[source code]: https://github.com/graphql/dataloader/blob/main/src/index.ts
 
 # Contributing to this repo
 

eslint.config.ts

@@ -0,0 +1,18 @@
+import js from '@eslint/js';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
+import eslintConfigPrettier from 'eslint-config-prettier';
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+import { defineConfig } from 'eslint/config';
+
+export default defineConfig([
+  {
+    files: ['**/*.{js,mjs,cjs,ts,mts,cts}'],
+    plugins: { js },
+    extends: ['js/recommended'],
+    languageOptions: { globals: { ...globals.browser, ...globals.node } },
+  },
+  tseslint.configs.recommended,
+  eslintConfigPrettier,
+  eslintPluginPrettierRecommended,
+]);