compilerOptions.baseUrl

baseUrl表示以jsconfig.json为基础目录，当我配置如下时

{
  "compilerOptions": {
    "baseUrl": "./src"
  }
}

project/
├── src/
│   ├── utils/
│   │   └── helper.js
│   └── index.js
└── jsconfig.json

import helper from 'utils/helper';

compilerOptions.paths

paths是基于baseUrl之上做细化的

{
  "compilerOptions": {
    "baseUrl": "./src",
    "paths": {
      "@utils/*": ["utils/*"],
      "@components/*": ["components/*"]
    }
  }
}

import helper from '@utils/helper';
import Button from '@components/Button';