feat!: drop Node.js 24 support

src/install-pnpm/run.ts

@@ -57,28 +57,21 @@ async function readTarget(opts: {
   const { version, packageJsonFile, standalone } = opts
   const { GITHUB_WORKSPACE } = process.env
 
-  let packageManager: string | undefined
+  let packageManager
-  let devEngines: { packageManager?: { name?: string; version?: string } } | undefined
 
   if (GITHUB_WORKSPACE) {
     try {
       const content = readFileSync(path.join(GITHUB_WORKSPACE, packageJsonFile), 'utf8');
-      const manifest = packageJsonFile.endsWith(".yaml")
+      ({ packageManager } = packageJsonFile.endsWith(".yaml")
         ? parseYaml(content, { merge: true })
         : JSON.parse(content)
-      packageManager = manifest.packageManager
+      )
-      devEngines = manifest.devEngines
     } catch (error: unknown) {
       // Swallow error if package.json doesn't exist in root
       if (!util.types.isNativeError(error) || !('code' in error) || error.code !== 'ENOENT') throw error
     }
   }
 
-  // If packageManager field is not set, try devEngines.packageManager
-  if (typeof packageManager !== 'string' && devEngines?.packageManager?.name === 'pnpm' && devEngines.packageManager.version) {
-    packageManager = `pnpm@${devEngines.packageManager.version}`
-  }
-
   if (version) {
     if (
       typeof packageManager === 'string' &&
@@ -105,8 +98,7 @@ Otherwise, please specify the pnpm version in the action configuration.`)
     throw new Error(`No pnpm version is specified.
 Please specify it by one of the following ways:
   - in the GitHub Action config with the key "version"
-  - in the package.json with the key "packageManager"
+  - in the package.json with the key "packageManager"`)
-  - in the package.json with the key "devEngines.packageManager"`)
   }
 
   if (!packageManager.startsWith('pnpm@')) {