feat: support dependency module for standalone (#155)

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##### Checklist
<!-- Remove items that do not apply. For completed items, change [ ] to
[x]. -->

- [x] `npm test` passes
- [x] tests and/or benchmarks are included
- [ ] documentation is changed or added
- [x] commit message follows commit guidelines

##### Affected core subsystem(s)
<!-- Provide affected core subsystem(s). -->


##### Description of change
<!-- Provide a description of the change below this comment. -->

<!--
- any feature?
- close https://github.com/eggjs/egg/ISSUE_URL
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.gitignore

@@ -38,3 +38,5 @@ plugin/dal/test/fixtures/modules/*/dal/
 !plugin/orm/test/fixtures/prepare.js
 !benchmark/**/*.js
 plugin/tegg/test/fixtures/apps/**/*.js
+!standalone/standalone/test/fixtures/**/node_modules
+!standalone/standalone/test/fixtures/**/node_modules/**/*.js

standalone/standalone/src/Runner.ts

@@ -1,4 +1,4 @@
-import { ModuleConfigUtil, ModuleReference, RuntimeConfig } from '@eggjs/tegg-common-util';
+import { ModuleConfigUtil, ModuleReference, ReadModuleReferenceOptions, RuntimeConfig } from '@eggjs/tegg-common-util';
 import {
   EggPrototype, EggPrototypeLifecycleUtil,
   LoadUnit,
@@ -26,6 +26,10 @@ import { ConfigSourceQualifierAttribute } from './ConfigSource';
 import { ConfigSourceLoadUnitHook } from './ConfigSourceLoadUnitHook';
 import { LoadUnitInnerClassHook } from './LoadUnitInnerClassHook';
 
+export interface ModuleDependency extends ReadModuleReferenceOptions {
+  baseDir: string;
+}
+
 export interface RunnerOptions {
   /**
    * @deprecated
@@ -35,6 +39,7 @@ export interface RunnerOptions {
   env?: string;
   name?: string;
   innerObjectHandlers?: Record<string, InnerObject[]>;
+  dependencies?: (string | ModuleDependency)[];
 }
 
 export class Runner {
@@ -62,7 +67,11 @@ export class Runner {
     this.cwd = cwd;
     this.env = options?.env;
     this.name = options?.name;
-    this.moduleReferences = ModuleConfigUtil.readModuleReference(this.cwd);
+    const moduleDirs = (options?.dependencies || []).concat(this.cwd);
+    this.moduleReferences = moduleDirs.reduce((list, baseDir) => {
+      const module = typeof baseDir === 'string' ? { baseDir } : baseDir;
+      return list.concat(...ModuleConfigUtil.readModuleReference(module.baseDir, module));
+    }, [] as readonly ModuleReference[]);
     this.moduleConfigs = {};
     this.innerObjects = {
       moduleConfigs: [{

standalone/standalone/test/fixtures/dependency/foo.ts

@@ -0,0 +1,19 @@
+import { ContextProto, Inject } from '@eggjs/tegg';
+import { Runner, MainRunner } from '@eggjs/tegg/standalone';
+import { Hello } from 'dependency-2/foo';
+import { ConfigSourceQualifier } from '../../../src/ConfigSource';
+
+@ContextProto()
+@Runner()
+export class Foo implements MainRunner<string> {
+  @Inject()
+  hello: Hello;
+
+  @Inject()
+  @ConfigSourceQualifier('dependency2')
+  moduleConfig: any;
+
+  async main(): Promise<string> {
+    return this.hello.hello() + JSON.stringify(this.moduleConfig);
+  }
+}

standalone/standalone/test/fixtures/dependency/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "entry",
+  "eggModule": {
+    "name": "entry"
+  }
+}

standalone/standalone/test/index.test.ts

@@ -14,6 +14,17 @@ describe('test/index.test.ts', () => {
     });
   });
 
+  describe('runner with dependency', () => {
+    it('should work', async () => {
+      const msg: string = await main(path.join(__dirname, './fixtures/dependency'), {
+        dependencies: [
+          path.join(__dirname, './fixtures/dependency/node_modules/dependency-1'),
+        ],
+      });
+      assert(msg === 'hello!{"features":{"dynamic":{"foo":"bar"}}}');
+    });
+  });
+
   describe('runner with inner object', () => {
     it('should work', async () => {
       const msg: string = await main(path.join(__dirname, './fixtures/inner-object'), {