Merge pull request #8 from beforeyoubid/feature/force-include

added force include

readme.md

@@ -82,6 +82,8 @@ custom:
     packager: 'auto' # can be specified as 'npm' | 'yarn' | 'pnpm';
     forceExclude:
       - some-library
+    forceInclude:
+      - some-other-library
 ```
 
 [serverless]: https://www.serverless.com/

src/constants.ts

@@ -24,6 +24,7 @@ export const DEFAULT_CONFIG: Config = {
   clean: true,
   minify: false,
   forceExclude: [],
+  forceInclude: [],
 };
 
 export const DEFAULT_AWS_MODULES: string[] = ['aws-sdk'];

src/index.ts

@@ -130,7 +130,7 @@ class EsbuildLayersPlugin implements Plugin {
   async fetchModulesForLayer(layerName: string) {
     const layerRefName = `${layerName.replace(/^./, x => x.toUpperCase())}LambdaLayer`;
 
-    const dependencies = await getExternalModules(this.serverless, this.config.forceExclude, layerRefName);
+    const dependencies = await getExternalModules(this.serverless, this.config, layerRefName);
     if (dependencies.length === 0) return {};
     const packageJsonText = await fs.promises.readFile(path.join(basePath, 'package.json'), { encoding: 'utf-8' });
     const packageJson = JSON.parse(packageJsonText) as PackageJsonFile;

src/types.ts

@@ -42,6 +42,7 @@ export type Config = {
   clean: boolean;
   minify: boolean;
   forceExclude: string[];
+  forceInclude: string[];
 };
 
 export enum Level {

src/utils.ts

@@ -119,12 +119,13 @@ export function getLayers(serverless: Serverless): { [key: string]: Layer } {
 /**
  * locate all external modules attached to a particular layer
  * @param serverless the serverless instance to check
+ * @param config the plugin config
  * @param layerRefName the name of the layer to check
  * @returns an array of strings containing the layer's modules
  */
 export async function getExternalModules(
   serverless: Serverless,
-  forceExclude: string[],
+  config: Config,
   layerRefName: string
 ): Promise<string[]> {
   const entries = await resolvedEntries(serverless, layerRefName);
@@ -166,7 +167,9 @@ export async function getExternalModules(
       .reduce((list, listsOfMods) => list.concat(...listsOfMods), [])
       .filter(module => !isBuiltinModule(module))
   );
-  return Array.from(imports).filter(dep => !DEFAULT_AWS_MODULES.includes(dep) && !forceExclude.includes(dep));
+  return Array.from(imports)
+    .filter(dep => !DEFAULT_AWS_MODULES.includes(dep) && !config.forceExclude.includes(dep))
+    .concat(config.forceInclude);
 }
 
 export function compileConfig(userConfig: Partial<Config>): Config {