如何在基于TypeScript的React Native应用程序中为导入配置绝对路径? [英] How do I configure absolute paths for imports in TypeScript based React Native apps?

问题描述

为了避免在基于TypeScript的React Native应用程序中使用'../../../../'样式的相对导入，我想对应用程序进行配置，以便可以使用绝对导入.

In order to avoid '../../../../' style relative imports in a TypeScript based React Native app, I would like to configure the app so that I can use absolute imports instead.

此配置还必须支持Jest单元测试，这一点很重要.

It is important that the configuration also supports Jest unit tests.

我使用npx react-native init MyTestApp --template typescript

原生版本:0.60.5

React Native version: 0.60.5

要实现这一目标，我需要什么确切的配置?

What is the exact configuration I would need to achieve this?

推荐答案

要求

// Meh
import config from '../../../../../../../config';

// Awesome!
import config from '@cuteapp/config';

操作方法

1. 添加此babel插件包

yarn add --dev babel-plugin-module-resolver

1. 我的babel.config.js

module.exports = {
  presets: ['module:metro-react-native-babel-preset'],
  plugins: [
    [
      'module-resolver',
      {
        cwd: 'babelrc',
        extensions: ['.ts', '.tsx', '.js', '.ios.js', '.android.js'],
        alias: {
          '@cuteapp': './app'
        }
      }
    ],
    'jest-hoist'
  ]
};

1. 我的tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "isolatedModules": true,
    "jsx": "react",
    "lib": ["es2015", "es2015.promise", "es2016.array.include", "dom"],
    "strict": true,
    "moduleResolution": "node",
    "baseUrl": "./",
    "paths": {
      "@cuteapp/*": ["app/*/index", "app/*"]
    },
    "noEmit": true,
    "resolveJsonModule": true,
    "target": "esnext",
    "types": ["jest"]
  },
  "exclude": ["node_modules", "babel.config.js", "metro.config.js"]
}

1. 就是这样.

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