Add nodejs12.x Support

Closes #10

README.md

@@ -144,6 +144,7 @@ This plugin currently supports the following AWS runtimes:
 
 * nodejs8.10
 * nodejs10.x
+* nodejs12.x
 * python2.7
 * python3.6
 * python3.7

examples/nodejs/handler.js

@@ -1,3 +1,3 @@
 module.exports.handler = (event, context, callback) => {
-    callback(null, 200);
+    callback(null, 'hi there');
 };

examples/nodejs/serverless.yml

@@ -43,3 +43,14 @@ functions:
       include:
         - handler.js
     runtime: nodejs10.x
+
+  layer-nodejs12x:
+    events:
+      - schedule: rate(5 minutes)
+    handler: handler.handler
+    package:
+      exclude:
+        - ./**
+      include:
+        - handler.js
+    runtime: nodejs12.x

src/index.ts

@@ -132,6 +132,7 @@ export default class NewRelicLambdaLayerPlugin {
       typeof runtime !== "string" ||
       [
         "nodejs10.x",
+        "nodejs12.x",
         "nodejs8.10",
         "python2.7",
         "python3.6",
@@ -226,7 +227,7 @@ export default class NewRelicLambdaLayerPlugin {
   }
 
   private getHandlerWrapper(runtime: string, handler: string) {
-    if (runtime === "nodejs10.x") {
+    if (["nodejs10.x", "nodejs12.x"].indexOf(runtime) !== -1) {
       return "newrelic-lambda-wrapper.handler";
     }