Add nodejs10.x runtime (#26)

Add nodejs10.x runtime

README.md

@@ -98,6 +98,7 @@ implemented are:
  * `nodejs` for Node.js Lambda functions using the system `node` binary
  * `nodejs6.10` for Node.js Lambda functions using a downloaded Node v6.10.0 binary
  * `nodejs8.10` for Node.js Lambda functions using a downloaded Node v8.10.0 binary
+ * `nodejs10.x` for Node.js Lambda functions using a downloaded Node v10.15.3 binary
  * `python` for Python Lambda functions using the system `python` binary
  * `python2.7` for Python Lambda functions using a downloaded Python v2.7.12 binary
  * `python3.6` for Python Lambda functions using a downloaded Python v3.6.8 binary

src/runtimes.ts

@@ -8,6 +8,7 @@ import { Runtime } from './types';
 import * as go1x from './runtimes/go1.x';
 import * as nodejs6 from './runtimes/nodejs6.10';
 import * as nodejs8 from './runtimes/nodejs8.10';
+import * as nodejs10 from './runtimes/nodejs10.x';
 import * as python27 from './runtimes/python2.7';
 import * as python36 from './runtimes/python3.6';
 import * as python37 from './runtimes/python3.7';
@@ -45,6 +46,7 @@ createRuntime(runtimes, 'go1.x', go1x);
 createRuntime(runtimes, 'nodejs');
 createRuntime(runtimes, 'nodejs6.10', nodejs6);
 createRuntime(runtimes, 'nodejs8.10', nodejs8);
+createRuntime(runtimes, 'nodejs10.x', nodejs10);
 createRuntime(runtimes, 'python');
 createRuntime(runtimes, 'python2.7', python27);
 createRuntime(runtimes, 'python3.6', python36);

src/runtimes/nodejs10.x/bootstrap

@@ -0,0 +1,9 @@
+#!/bin/bash
+set -euo pipefail
+
+# Ensure the downloaded Node.js version is used
+export PATH="$LAMBDA_RUNTIME_DIR/bin:$PATH"
+
+# Execute the "nodejs" runtime bootstrap
+export LAMBDA_RUNTIME_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}")"/../nodejs >/dev/null 2>&1 && pwd )"
+exec "$LAMBDA_RUNTIME_DIR/bootstrap" "$@"

src/runtimes/nodejs10.x/bootstrap.ts

@@ -0,0 +1,6 @@
+import { join } from 'path';
+import { spawn } from 'child_process';
+
+const nodeBin = join(__dirname, 'bin', 'node');
+const bootstrap = join(__dirname, '..', 'nodejs', 'bootstrap.js');
+spawn(nodeBin, [bootstrap], { stdio: 'inherit' });

src/runtimes/nodejs10.x/index.ts

@@ -0,0 +1,10 @@
+import { Runtime } from '../../types';
+import { installNode } from '../../install-node';
+import { runtimes, initializeRuntime } from '../../runtimes';
+
+export async function init({ cacheDir }: Runtime): Promise<void> {
+	await Promise.all([
+		initializeRuntime(runtimes.nodejs),
+		installNode(cacheDir, '10.15.3')
+	]);
+}

src/types.ts

@@ -4,7 +4,7 @@ export interface LambdaParams {
 	FunctionName?: string;
 	Code: { ZipFile?: Buffer | string; Directory?: string };
 	Handler: string;
-	Runtime: string; // nodejs | nodejs4.3 | nodejs6.10 | nodejs8.10 | java8 | python2.7 | python3.6 | python3.7 | dotnetcore1.0 | dotnetcore2.0 | dotnetcore2.1 | nodejs4.3-edge | go1.x | ruby2.5 | provided
+	Runtime: string; // nodejs | nodejs4.3 | nodejs6.10 | nodejs8.10 | nodejs10.x | java8 | python2.7 | python3.6 | python3.7 | dotnetcore1.0 | dotnetcore2.0 | dotnetcore2.1 | nodejs4.3-edge | go1.x | ruby2.5 | provided
 	Provider?: string; // native | docker
 	Environment?: { Variables: object };
 	MemorySize?: number; // The amount of memory that your function has access to. Increasing the function's memory also increases it's CPU allocation. The default value is 128 MB. The value must be a multiple of 64 MB.

test/test.ts

@@ -469,6 +469,22 @@ export const test_nodejs810_exit_in_handler = testInvoke(
 	}
 );
 
+// `nodejs10.x` runtime
+export const test_nodejs10_version = testInvoke(
+	() =>
+		createFunction({
+			Code: {
+				Directory: __dirname + '/functions/nodejs-version'
+			},
+			Handler: 'handler.handler',
+			Runtime: 'nodejs10.x'
+		}),
+	async fn => {
+		const versions = await fn({ hello: 'world' });
+		assert.equal(versions.node, '10.15.3');
+	}
+);
+
 // `go1.x` runtime
 export const test_go1x_echo = testInvoke(
 	() =>