Upgrade to Yarn 4.x for OIDC trusted publishing

- Add packageManager field (yarn@4.9.1)
- Add .yarnrc.yml with nodeLinker: node-modules
- Update CI: corepack enable, --immutable, yarn npm publish
- Update Node.js to 22.x

Author: hillna

.github/workflows/ci.yml

@@ -19,15 +19,16 @@ jobs:
 
     steps:
       - uses: actions/checkout@v6
+      - run: corepack enable
       - uses: actions/setup-node@v6
         with:
-          node-version: 16.x
+          node-version: 22.x
           registry-url: https://registry.npmjs.org
+          cache: yarn
 
-      - run: yarn install --frozen-lockfile
+      - run: yarn install --immutable
       - run: yarn run lint:ci
 
-      - run: yarn pack
       - name: Publish to NPM
         if: ${{ startsWith(github.ref, 'refs/tags/v') }}
-        run: npx npm@11.7.0 publish package.tgz --provenance --access public
+        run: yarn npm publish --provenance --access public

.gitignore

@@ -3,3 +3,12 @@
 *.tsbuildinfo
 dist/
 node_modules/
+
+# Yarn
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+.pnp.*

.vscode/settings.json

@@ -1,7 +1,7 @@
 // -*- jsonc -*-
 {
   "editor.codeActionsOnSave": {
-    "source.fixAll.eslint": true
+    "source.fixAll.eslint": "explicit"
   },
   "editor.formatOnSave": true,
   "editor.defaultFormatter": "esbenp.prettier-vscode",

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@foxglove/just-fetch",
-  "private": false,
   "version": "1.3.1",
+  "packageManager": "yarn@4.9.1",
   "description": "Isomorphic ponyfill wrapping native browser fetch and node-fetch",
   "license": "MIT",
   "repository": {