feat: create releases where PATCH doesn't have to match react-native (#…

…43)

This feature needs to be released with react-native-community/cli#2475,
which decouples the 1:1 release model we have for templates and
react-native.

Switching users to this is going to be difficult, and should only be
rolled asap before 0.76. If we have to release a template fix, then only
users with the latest CLI will be able to use that and subsequent
versions.

I'm not sure of how to clearly communicate that to users.

- Added tests
- Set dry_run to default

.github/workflows/release.yaml

@@ -4,14 +4,18 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: "The version of the template we want to release. For example 0.75.0-rc.0"
+        description: "The version of the react-native we the template to use in this release. For example 0.75.0-rc.0"
         required: true
         type: string
       is_latest_on_npm:
         description: "Whether we want to tag this template release as `latest` on NPM"
         required: true
         type: boolean
         default: false
+      dry_run:
+        description: "Run without making persistent changes to git or npm"
+        type: boolean
+        default: true
 
 jobs:
   publish_template:
@@ -30,35 +34,37 @@ jobs:
         with:
           node-version: 18
           registry-url: 'https://registry.npmjs.org'
+      - name: Determine new template version
+        run: echo "VERSION=$(./scripts/bumpedTemplateVersion.sh \"${{ inputs.version }}\")" >> $GITHUB_ENV
       - name: Update versions to input one
-        run: node ./scripts/updateTemplateVersion.js "${{ inputs.version }}"
+        run: node ./scripts/updateTemplateVersion.js $VERSION
       - name: Update template/package.json to nightly react-native + @react-native
         run: node ./scripts/updateReactNativeVersion.js "${{ inputs.version }}"
       - name: Create corresponding commit & git tag
         run: |
-          VERSION="${{ inputs.version }}"
-          git config --global user.name 'React Native Bot'
-          git config --global user.email '[email protected]'
-          git commit -am "Bumping template to $VERSION"
-          git push
-          git tag $VERSION
-          git push --tags
+          GIT=$([ "${{ inputs.dry_run }}" = "true" ] && "echo git" || "git";
+          $GIT config --global user.name 'React Native Bot'
+          $GIT config --global user.email '[email protected]'
+          $GIT commit -am "Bumping template to $VERSION"
+          $GIT push
+          $GIT tag $VERSION
+          $GIT push --tags
       - name: Publish NPM
         run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
       - name: Set NPM tags
         run: |
-          VERSION="${{ inputs.version }}"
+          NPM=$([ "${{ inputs.dry_run }}" = "true" ] && "echo npm" || "npm";
           IS_LATEST_ON_NPM="${{ inputs.is_latest_on_npm }}"
           if [[ "$IS_LATEST_ON_NPM" == "true" ]]; then
-            npm dist-tag add @react-native-community/template@$VERSION latest
+            $NPM dist-tag add @react-native-community/template@$VERSION latest
           fi
           if [[ "$VERSION" == *"rc"* ]]; then
-            npm dist-tag add @react-native-community/template@$VERSION next
+            $NPM dist-tag add @react-native-community/template@$VERSION next
           fi
           if [[ "$GITHUB_REF_NAME" == *"-stable" ]]; then
-            npm dist-tag add @react-native-community/template@$VERSION $GITHUB_REF_NAME
+            $NPM dist-tag add @react-native-community/template@$VERSION $GITHUB_REF_NAME
           fi
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

jest.config.js

@@ -0,0 +1,9 @@
+/** @type {import('jest').Config} */
+const config = {
+  coverageProvider: "v8",
+  testMatch: [
+    "**/__tests__/*.js",
+  ],
+};
+
+module.exports = config;

package.json

@@ -6,14 +6,19 @@
   "publishConfig": {
     "access": "public"
   },
-  "scripts": {},
+  "scripts": {
+    "test": "jest"
+  },
   "type": "commonjs",
   "files": [
     "template/*",
     "template.config.js"
   ],
   "dependencies": {},
-  "devDependencies": {},
+  "devDependencies": {
+    "jest": "^29.7.0",
+    "semver": "^7.6.3"
+  },
   "homepage": "https://github.com/react-native-community/template/tree/main",
   "repository": {
     "type": "git",

scripts/__tests__/bumpTemplateVersion-test.js

@@ -0,0 +1,30 @@
+const {execSync} = require('child_process');
+const semver = require('semver');
+
+function run(version) {
+  return execSync(`./bumpedTemplateVersion.sh ${version}`, { cwd: 'scripts', stdio: ['ignore', 'pipe', 'ignore'] }).toString().trim();
+}
+
+describe('bumpTemplateVersion.sh', () => {
+
+  it('nightlies stay the same', () => {
+    expect(run('0.75.0-nightly-20240606-4324f0874')).toEqual('0.75.0-nightly-20240606-4324f0874');
+  });
+
+  it('release candidates appended with a sha', () => {
+    expect(run('0.74.0-rc.3')).toMatch(/0\.74\.0-rc\.3-.+/);
+  });
+
+  it('assumed it is the first version when no matching MAJOR.MINOR', () => {
+    const versionShouldNeverExist = '1111.0.1';
+    expect(run(versionShouldNeverExist)).toEqual('1111.0.0');
+  });
+
+  it('bumps the patch if a version of the template already exists', async () => {
+    // This sucks I know:
+    const {version} = await fetch('https://registry.npmjs.com/@react-native-community/template/latest').then(resp => resp.json());
+    const {major, minor, patch} = semver.parse(version);
+    expect(run(`${major}.${minor}.${patch}`)).toEqual(`${major}.${minor}.${patch+1}`);
+  });
+
+});

scripts/bumpedTemplateVersion.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+# What this does:
+# 1. Take the version of react, use the MAJOR.MINOR
+#     - /nightly/ -> MAJOR.MINOR.PATCH-nightly-YYYYNN-HASH
+#     - /-rc.N/   -> MAJOR.MINOR.PATCH-rc.N-HASH
+#     - ELSE: continue
+# 2. Look for the latest version of the template with that MAJOR.MINOR
+#   - No version -> then set to MAJOR.MINOR.0
+#   - MAJOR.MINOR.PATCH -> MAJOR.MINOR.PATCH+1
+
+log() {
+  echo "$@" >&2
+}
+
+if [[ $# != 1 ]]; then
+  log "USAGE: bumpTemplateVersion.sh <react native version>"
+  exit 1
+fi
+
+if [[ $1 =~ -rc\.[0-9]+ ]]; then
+  log "Release candidate"
+  # Append a sha, so if we need to re-release for a RC we don't conflict
+  echo $1-$(git rev-parse --short HEAD)
+  exit 0
+fi
+
+if [[ $1 =~ -nightly- ]]; then
+  log "Nightly candidate"
+  # Once a day, we're not going to get conflicts using the given nightly tag
+  echo $1
+  exit 0
+fi
+
+# Find current version of template that matches this version of react-native.
+if [[ $1 =~ [0-9]+\.[0-9]+\.[0-9]+ ]]; then 
+  MAJOR_MINOR=$(awk -F'.' '{ print $1"."$2 }' <<< $1)
+  CURRENT_VERSION=$(npm show --json "@react-native-community/template@^$MAJOR_MINOR")
+  if [ $? -ne 0 ]; then
+    echo "$MAJOR_MINOR.0";
+    exit 0;
+  fi
+  # Bump PATCH
+  PUBLISHED=$(jq -r 'last | .version' <<< $CURRENT_VERSION | awk -F'.' '{ print $1"."$2"."($3+1) }')
+  echo $PUBLISHED;
+  exit 0
+fi
+
+log "Unknown type of release: $RN_VERSION"
+exit 1