最近准备自己造一套轮子，技术栈暂定为react+typescript。在react引入ts的时候还是遇到了一些坑，所以写篇文章记录一下引入的过程。
引入ts么，就要先选择一个ts的解析工具，这里我根据文档选了awesome-typescript-loader，所以在webpack.config.js里加

module: {
        rules: [
            {
                test: /\.tsx?$/,
                loader: 'awesome-typescript-loader'
            }
        ]
    },

然后配置ts.config.js文件，在配置的时候，我加了这样一个选项

"allowSyntheticDefaultImports": true

然后在yarn test的时候出现了一些bug，引入react必须import * as React from 'react'这么引， 否则就出错，报错如下

 Cannot read property 'createElement' of undefined

必须把它改成

"esModuleInterop": true,

所以ts.config.js配置应如下

{
  "compilerOptions": {
    "declaration": true,
    "baseUrl": ".",
    "paths": {
      "utils/*": ["include/utils/*"],
      "stylesheets": ["stylesheets/"],
      "examples": ["examples/"]
    },
    "rootDirs": ["include"],
    "outDir": "dist",
    "module": "esnext",
    "target": "es5",
    "lib": ["es6", "dom"],
    "sourceMap": true,
    "jsx": "react",
    "moduleResolution": "node",
    "rootDir": ".",
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "importHelpers": true,
    "strictNullChecks": true,
    "esModuleInterop": true,
    "noUnusedLocals": true
  },
  "include": [  // 所需要用ts的文件
    "lib/**/*",
    "types/**/*",
  ],
  "exclude": [  //排除文件
    "node_modules",
    "build",
    "dist",
    "scripts",
    "acceptance-tests",
    "webpack",
    "jest",
    "src/setupTests.ts",
    "*.js"
  ]
}

另外，我需要再引入一下tslint，所以还要配置一个
tslint

{
  "extends": [
    "tslint:recommended",
    "tslint-react"
  ],
  "rules": {
    "no-console": [
      false,
      "log",
      "error"
    ],
    "jsx-no-multiline-js": false,
    "whitespace": false,
    "no-empty-interface": false,
    "space-before-function-paren": false,
    "no-namespace": false,
    "label-position": false,
    "quotemark": [
      true,
      "single",
      "jsx-double"
    ],
    "member-access": false,
    "semicolon": [
      true,
      "always",
      "ignore-bound-class-methods"
    ],
    "no-unused-expression": [
      true,
      "allow-fast-null-checks"
    ],
    "member-ordering": false,
    "trailing-comma": false,
    "arrow-parens": false,
    "jsx-self-close": false,
    "max-line-length": false,
    "interface-name": false,
    "no-empty": false,
    "comment-format": false,
    "ordered-imports": false,
    "object-literal-sort-keys": false,
    "eofline": false,
    "jsx-no-lambda": false,
    "no-trailing-whitespace": false,
    "jsx-alignment": false,
    "jsx-wrap-multiline": false,
    "no-shadowed-variable": [
      false,
      {
        "class": true,
        "enum": true,
        "function": false,
        "interface": false,
        "namespace": true,
        "typeAlias": false,
        "typeParameter": false
      }
    ]
  },
  "linterOptions": {
    "exclude": [
      "config/**/*.js",
      "node_modules/**/*.ts",
      "coverage/lcov-report/*.js"
    ]
  }
}

配置完成，下一节我会讲react里怎么使用ts。