无法解析 tsconfig 路径

Question

我的 TypeScript 版本为“2.7.2”的 Angular 6 项目有 tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./src",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  },
  "paths":{
    "@services/*": ["app/services/*"] 
  }
 }

我尝试使用上述路径导入服务

 import { AppService } from '@services/app.service';

但我在运行 ng serve 时遇到此错误

src/app/app.module.ts(20,26) 中的错误：错误 TS2307：找不到模块“@services/app.service”。

P.S.- 没有路径

import { AppService } from './services/app.service';

工作正常。

Answer 1

paths 选项是compilerOptions 的一部分

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./src",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ],
    "paths":{
      "@services/*": ["app/services/*"] 
    }
  },
 }