fix(@ngtools/webpack): support locating PNPM lock file during NGCC processing

Previously, we only handled Yarn and NPM lock files even though PNPM is supported as package manager.

The lock file is used to perform checks to determine if an initial execution of NGCC was already performed.

Closes #22632

(cherry picked from commit 966dd01)

Author: alan-agius4

packages/ngtools/webpack/src/ngcc_processor.ts

@@ -73,15 +73,6 @@ export class NgccProcessor {
     const runHashBasePath = path.join(this._nodeModulesDirectory, '.cli-ngcc');
     const projectBasePath = path.join(this._nodeModulesDirectory, '..');
     try {
-      let lockData;
-      let lockFile = 'yarn.lock';
-      try {
-        lockData = readFileSync(path.join(projectBasePath, lockFile));
-      } catch {
-        lockFile = 'package-lock.json';
-        lockData = readFileSync(path.join(projectBasePath, lockFile));
-      }
-
       let ngccConfigData;
       try {
         ngccConfigData = readFileSync(path.join(projectBasePath, 'ngcc.config.js'));
@@ -91,11 +82,12 @@ export class NgccProcessor {
 
       const relativeTsconfigPath = path.relative(projectBasePath, this.tsConfigPath);
       const tsconfigData = readFileSync(this.tsConfigPath);
+      const { lockFileData, lockFilePath } = this.findPackageManagerLockFile(projectBasePath);
 
       // Generate a hash that represents the state of the package lock file and used tsconfig
       const runHash = createHash('sha256')
-        .update(lockData)
-        .update(lockFile)
+        .update(lockFileData)
+        .update(lockFilePath)
         .update(ngccConfigData)
         .update(tsconfigData)
         .update(relativeTsconfigPath)
@@ -248,6 +240,24 @@ export class NgccProcessor {
 
     throw new Error(`Cannot locate the 'node_modules' directory.`);
   }
+
+  private findPackageManagerLockFile(projectBasePath: string): {
+    lockFilePath: string;
+    lockFileData: Buffer;
+  } {
+    for (const lockFile of ['yarn.lock', 'pnpm-lock.yaml', 'package-lock.json']) {
+      const lockFilePath = path.join(projectBasePath, lockFile);
+
+      try {
+        return {
+          lockFilePath,
+          lockFileData: readFileSync(lockFilePath),
+        };
+      } catch {}
+    }
+
+    throw new Error('Cannot locate a package manager lock file.');
+  }
 }
 
 class NgccLogger implements Logger {