来自：https://zhuanlan.zhihu.com/p/83291118
1.给RN项目添加 TypeScript
yarn add --dev typescript 或者 npm install typescript --save
2.给项目添加 react-native-typescript-transformer 库
yarn add --dev react-native-typescript-transformer
3.初始化 TypeScript 配置文件
yarn tsc --init --pretty --jsx react-native
打开tsconfig.json文件
{
"compilerOptions" : {
/* Basic Options */
// "incremental": true, /* Enable incremental compilation */
"target": "esnext", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
"module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
"lib": ["es6"], /* Specify library files to be included in the compilation. */
"allowJs": true , /* Allow javascript files to be compiled. */
// "checkJs": true, /* Report errors in .js files. */
"jsx": "react-native", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
"resolveJsonModule": true ,
// "declaration": true, /* Generates corresponding '.d.ts' file. */
// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
// "sourceMap": true, /* Generates corresponding '.map' file. */
// "outFile": "./", /* Concatenate and emit output to single file. */
// "outDir": "./", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true, /* Enable project compilation */
// "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
// "removeComments": true, /* Do not emit comments to output. */
"noEmit": true , /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
"isolatedModules": true , /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": true , /* Enable all strict type-checking options. */
// "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true, /* Enable strict null checks. */
// "strictFunctionTypes": true, /* Enable strict checking of function types. */
// "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
// "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
/* Additional Checks */
// "noUnusedLocals": true, /* Report errors on unused locals. */
// "noUnusedParameters": true, /* Report errors on unused parameters. */
// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
/* Module Resolution Options */
"moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
"baseUrl": "./", /* Base directory to resolve non-absolute module names. */
"paths" : {
"@app": ["./" ],
"@src": ["./src" ]
}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [], /* List of folders to include type definitions from. */
// "types": [], /* Type declaration files to be included in compilation. */
"allowSyntheticDefaultImports": true , /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
"esModuleInterop": true , /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
"include": ["**/*.js", "**/*.ts", "**/*.tsx", "**/*.jsx" ],
"exclude": ["node_modules", "babel.config.js", "metro.config.js", "jest.config.js" ],
// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
/* Source Map Options */
// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
"experimentalDecorators": true /* Enables experimental support for ES7 decorators. */
// "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
}
}
4.创建 rn-cli.config.js 文件并配置
module.exports= {
getTransformModulePath(){
return require.resolve("react-native-typescript-transformer" );
},
getSourceExts(){
return ["ts","tsx","js","jsx" ];
}
}
5.（可选）安装 @types/react @types/react-native @types/react-test-renderer @types/jest
yarn add --dev @types/react @types/react-native @types/react-test-renderer @types/ jest 或者 npm install --save @types/react @types/react-native @types/react-test-renderer @types/jest
查看更多关于已有的react-native 项目配置TypeScript的详细内容...
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