feat(lambda-nodejs): pnpm support

Closes aws#14757

packages/@aws-cdk/aws-lambda-nodejs/README.md

@@ -46,10 +46,9 @@ when working with the AWS SDK for JavaScript. Set the `awsSdkConnectionReuse` pr
 
 ## Lock file
 
-The `NodejsFunction` requires a dependencies lock file (`yarn.lock` or
-`package-lock.json`). When bundling in a Docker container, the path containing this
-lock file is used as the source (`/asset-input`) for the volume mounted in the
-container.
+The `NodejsFunction` requires a dependencies lock file (`yarn.lock`, `package-lock.json` or
+`pnpm-lock.yml`). When bundling in a Docker container, the path containing this lock file is
+used as the source (`/asset-input`) for the volume mounted in the container.
 
 By default, the construct will try to automatically determine your project lock file.
 Alternatively, you can specify the `depsLockFilePath` prop manually. In this
@@ -114,8 +113,9 @@ new lambda.NodejsFunction(this, 'my-handler', {
 ```
 
 The modules listed in `nodeModules` must be present in the `package.json`'s dependencies or
-installed. The same version will be used for installation. The lock file (`yarn.lock` or
-`package-lock.json`) will be used along with the right installer (`yarn` or `npm`).
+installed. The same version will be used for installation. The lock file (`yarn.lock`,
+`pnpm-lock.yml` or `package-lock.json`) will be used along with the right installer (`yarn`,
+`pnpm` or `npm`).
 
 When working with `nodeModules` using native dependencies, you might want to force bundling in a
 Docker container even if `esbuild` is available in your environment. This can be done by setting
@@ -219,7 +219,7 @@ new lambda.NodejsFunction(this, 'my-handler', {
 ```
 
 This image should have `esbuild` installed **globally**. If you plan to use `nodeModules` it
-should also have `npm` or `yarn` depending on the lock file you're using.
+should also have `npm`, `yarn` or `pnpm` depending on the lock file you're using.
 
 Use the [default image provided by `@aws-cdk/aws-lambda-nodejs`](https://github.com/aws/aws-cdk/blob/master/packages/%40aws-cdk/aws-lambda-nodejs/lib/Dockerfile)
 as a source of inspiration.

packages/@aws-cdk/aws-lambda-nodejs/lib/Dockerfile

@@ -1,11 +1,14 @@
 # The correct AWS SAM build image based on the runtime of the function will be
 # passed as build arg. The default allows to do `docker build .` when testing.
-ARG IMAGE=public.ecr.aws/sam/build-nodejs12.x
+ARG IMAGE=public.ecr.aws/sam/build-nodejs14.x
 FROM $IMAGE
 
 # Install yarn
 RUN npm install --global yarn@1.22.5
 
+# Install pnpm
+RUN npm install --global pnpm
+
 # Install esbuild
 # (unsafe-perm because esbuild has a postinstall script)
 ARG ESBUILD_VERSION=0

packages/@aws-cdk/aws-lambda-nodejs/lib/function.ts

@@ -84,28 +84,11 @@ export class NodejsFunction extends lambda.Function {
       throw new Error('Only `NODEJS` runtimes are supported.');
     }
 
-    // Find lock file
-    let depsLockFilePath: string;
-    if (props.depsLockFilePath) {
-      if (!fs.existsSync(props.depsLockFilePath)) {
-        throw new Error(`Lock file at ${props.depsLockFilePath} doesn't exist`);
-      }
-      if (!fs.statSync(props.depsLockFilePath).isFile()) {
-        throw new Error('`depsLockFilePath` should point to a file');
-      }
-      depsLockFilePath = path.resolve(props.depsLockFilePath);
-    } else {
-      const lockFile = findUp(PackageManager.YARN.lockFile) ?? findUp(PackageManager.NPM.lockFile);
-      if (!lockFile) {
-        throw new Error('Cannot find a package lock file (`yarn.lock` or `package-lock.json`). Please specify it with `depsFileLockPath`.');
-      }
-      depsLockFilePath = lockFile;
-    }
-
     // Entry and defaults
     const entry = path.resolve(findEntry(id, props.entry));
     const handler = props.handler ?? 'handler';
     const runtime = props.runtime ?? lambda.Runtime.NODEJS_14_X;
+    const depsLockFilePath = findLockFile(props.depsLockFilePath);
 
     super(scope, id, {
       ...props,
@@ -126,6 +109,33 @@ export class NodejsFunction extends lambda.Function {
   }
 }
 
+/**
+ * Checks given lock file or searches for a lock file
+ */
+function findLockFile(depsLockFilePath?: string): string {
+  if (depsLockFilePath) {
+    if (!fs.existsSync(depsLockFilePath)) {
+      throw new Error(`Lock file at ${depsLockFilePath} doesn't exist`);
+    }
+
+    if (!fs.statSync(depsLockFilePath).isFile()) {
+      throw new Error('`depsLockFilePath` should point to a file');
+    }
+
+    return path.resolve(depsLockFilePath);
+  }
+
+  const lockFile = findUp(PackageManager.PNPM.lockFile)
+    ?? findUp(PackageManager.YARN.lockFile)
+    ?? findUp(PackageManager.NPM.lockFile);
+
+  if (!lockFile) {
+    throw new Error('Cannot find a package lock file (`pnpm-lock.yaml`, `yarn.lock` or `package-lock.json`). Please specify it with `depsFileLockPath`.');
+  }
+
+  return lockFile;
+}
+
 /**
  * Searches for an entry file. Preference order is the following:
  * 1. Given entry file

packages/@aws-cdk/aws-lambda-nodejs/lib/package-manager.ts

@@ -23,6 +23,12 @@ export class PackageManager {
     runCommand: ['yarn', 'run'],
   });
 
+  public static PNPM = new PackageManager({
+    lockFile: 'pnpm-lock.yaml',
+    installCommand: ['pnpm', 'install'],
+    runCommand: ['pnpm', 'run'],
+  });
+
   public static fromLockFile(lockFilePath: string): PackageManager {
     const lockFile = path.basename(lockFilePath);
 
@@ -31,6 +37,8 @@ export class PackageManager {
         return PackageManager.NPM;
       case PackageManager.YARN.lockFile:
         return PackageManager.YARN;
+      case PackageManager.PNPM.lockFile:
+        return PackageManager.PNPM;
       default:
         return PackageManager.NPM;
     }

packages/@aws-cdk/aws-lambda-nodejs/test/package-manager.test.ts

@@ -15,8 +15,15 @@ test('from a yarn.lock', () => {
   expect(packageManager.runBinCommand('my-bin')).toBe('yarn run my-bin');
 });
 
-test('defaults to NPM', () => {
+test('from a pnpm-lock.yml', () => {
   const packageManager = PackageManager.fromLockFile('/path/to/pnpm-lock.yaml');
+  expect(packageManager).toEqual(PackageManager.PNPM);
+
+  expect(packageManager.runBinCommand('my-bin')).toBe('pnpm run my-bin');
+});
+
+test('defaults to NPM', () => {
+  const packageManager = PackageManager.fromLockFile('/path/to/other.lock');
   expect(packageManager).toEqual(PackageManager.NPM);
 });