Merge pull request #5 from beforeyoubid/bug/bundling-aws-libraries

avoid bundling aws libraries as they come by default

package.json

@@ -1,6 +1,6 @@
 {
   "name": "serverless-esbuild-layers",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "author": {
     "name": "Bailey Sheather",
     "email": "[email protected]",

readme.md

@@ -1,5 +1,7 @@
 # serverless-esbuild-layers
 
+[![Test Coverage](https://api.codeclimate.com/v1/badges/e5f4215f1f3f63aad0eb/test_coverage)](https://codeclimate.com/github/beforeyoubid/serverless-esbuild-layers/test_coverage) [![Maintainability](https://api.codeclimate.com/v1/badges/e5f4215f1f3f63aad0eb/maintainability)](https://codeclimate.com/github/beforeyoubid/serverless-esbuild-layers/maintainability)
+
 Plugin for the [Serverless framework][serverless] that allows you to leverage Lambda layers to separate your node modules into layers attached to relevant functions.
 
 This helps to keep the overall function size down.

src/constants.ts

@@ -24,3 +24,5 @@ export const DEFAULT_CONFIG: Config = {
   clean: true,
   minify: false,
 };
+
+export const DEFAULT_AWS_MODULES: string[] = ['aws-sdk', 'aws-xray-sdk'];

src/utils.ts

@@ -7,7 +7,7 @@ import nodeExternalsPlugin from 'esbuild-node-externals';
 import isBuiltinModule from 'is-builtin-module';
 
 import type { Maybe, FunctionWithConfig, Layer, Config } from './types';
-import { DEFAULT_CONFIG } from './constants';
+import { DEFAULT_CONFIG, DEFAULT_AWS_MODULES } from './constants';
 
 import { exec as execNonPromise, ExecOptions, ExecException } from 'child_process';
 import util from 'util';
@@ -162,7 +162,7 @@ export async function getExternalModules(serverless: Serverless, layerRefName: s
       .reduce((list, listsOfMods) => list.concat(...listsOfMods), [])
       .filter(module => !isBuiltinModule(module))
   );
-  return Array.from(imports);
+  return Array.from(imports).filter(dep => !DEFAULT_AWS_MODULES.includes(dep));
 }
 
 export function compileConfig(userConfig: Partial<Config>): Config {