三种方式处理

babel-loader 编译ts (@babel/preset-typescript)
ts-loader
tsc

1. babel-loader 通过babelrc文件配置 @babel/preset-typescript 处理ts

以webpack为例

// webpack配置
 {
        test: /\.tsx?$/,
        loader: "babel-loader",
        exclude: /node_modules/,
},

//  babel.config.js
module.exports = {
  presets: [
    [
      "@babel/preset-env",
    ],
    "@babel/preset-react",
    "@babel/preset-typescript",
  ],
  plugins: [["@babel/plugin-transform-runtime"]],
};

rollup使用@rollup/plugin-babel 插件使用 @babel/preset-typescript编译ts

import babel from "@rollup/plugin-babel";
const extensions = ["*", ".js", ".ts"]

export default {
  input: "./src-ts/index.ts", // 表示以哪个文件作为打包的入口
  output: {
    file: "dist/dist-ts/ts-vue.js",
    name: "TsVue", // 指定打包后全局变量的名字 (会在全局上增加一个Vue属性) global.Vue
    format: "umd", // 表示统一模块规范 esm,cjs,iife, umd(统一模块规范 cjs+amd)
    sourcemap: true, // 将es6转化为es5后的源码调试 (希望可以调试)
  },
  plugins: [
    babel({
      // 不会走babelrc文件
      babelrc: false,
      extensions,
      exclude: "node_modules/**",
      presets: [
        "@babel/preset-env",
        "@babel/preset-react",
        "@babel/preset-typescript",
      ],
    }),
  ],
};

rollup使用@rollup/plugin-typescript编译typescript

import resolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import typescript from "@rollup/plugin-typescript";

export default {
  input: "./src-ts/index.ts", // 表示以哪个文件作为打包的入口
  output: {
    file: "dist/umd/ts-vue.js",
    name: "TsVue", // 指定打包后全局变量的名字 (会在全局上增加一个Vue属性) global.Vue
    format: "umd", // 表示统一模块规范 esm,cjs,iife, umd(统一模块规范 cjs+amd)
    sourcemap: true, // 将es6转化为es5后的源码调试 (希望可以调试)
  },
  plugins: [
    resolve(),
    commonjs(),
    typescript(),
  ],
};

2. 使用ts-loader

以webpack为例

// webpack.config.js
const path = require("path");

module.exports = {
  entry: "./src/index.ts",
  output: {
    path: path.join(__dirname, "/dist"),
    publicPath: "/",
    filename: "index.js",
    library: "myNpm",
    libraryTarget: "umd",
    libraryExport: "default",
  },
  resolve: {
    extensions: [".ts", ".tsx", ".json", ".js"],
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: [
          {
            loader: "ts-loader",
            // options: {
            //   // 指定特定的ts编译配置，为了区分脚本的ts配置
            //   configFile: path.resolve(__dirname, "./tsconfig.json"),
            // },
          },
        ],
        exclude: /node_modules/,
      },
      {
        test: /\.js?$/,
        loader: "babel-loader",
        exclude: /node_modules/,
      },
    ],
  },
  // ...
};

3. tsc对文件进行编译

npm install typescript --save-dev

package.json scripts 添加如下命令, 通过tsc编译ts文件

"scripts": {
    "tsc:types": "tsc -p tsconfig.json --emitDeclarationOnly --outDir tsc-types",
    "tsc:esm": "tsc --project tsconfig.json --module es2015 --outDir tsc-esm",
    "tsc:cjs": "tsc --project tsconfig.json --outDir tsc-cjs",
    "ts-check": "tsc -p tsconfig.json --noEmit",
}