无法解析tsconfig路径

Question

我的带有TypeScript版本"2.7.2“的Range6项目有tsconfig.json作为

{
  "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/*"] 
  }
 }

我尝试使用上面的路径导入服务。

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

但是我在运行ng serve时遇到了这个错误

src/app/app.module.ts(20，26)中的错误:错误TS2307:无法找到模块@services/app.service。

P.S.-没有路径

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

效果很好。

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/*"] 
    }
  },
 }