在Typescript Node.js应用中导入变量时无法解析本地模块

如何解决在Typescript Node.js应用中导入变量时无法解析本地模块

（ UPDATE ：已解决。我必须在webpack.config.js中添加可解析的扩展名，例如，以resolve: { extensions: [".ts",".tsx",".js",".mjs"] }的形式添加，尽管不确定导入接口为何起作用。{{3 }}。

项目结构：

.
├── global.ts
├── index.ts
├── node_modules
├── package.json
├── tsconfig.json
├── webpack.config.js
└── yarn.lock

和文件内容：

// global.ts
// has more than one exported variables in the real project
export const g: string = "g";

// index.ts
import { g } from "./global";
console.log(g);

// tsconfig.json
{
    "include": ["**/*"],"exclude": ["node_modules/*"],"compilerOptions": {
        "target": "esnext","module": "esnext","sourceMap": true,"strict": true,"noImplicitAny": true,"moduleResolution": "node","types": [
            "node"
        ],"allowSyntheticDefaultImports": true,"esModuleInterop": true 
    }
}

// webpack.config.js
module.exports = {
  target: "node",entry: {
    index: "./index.ts",},output: {
    filename: "[name].js",module: {
    rules: [
      {
        test: /\.ts$/,use: "ts-loader",exclude: /node_modules/,],};

// package.json
{
  "name": "app","version": "1.0.0","main": "index.ts","license": "MIT","devDependencies": {
    "@types/node": "^14.0.27","ts-loader": "^8.0.2","typescript": "^3.9.7","webpack": "^4.44.1","webpack-cli": "^3.3.12"
  }
}

然后如果我npx webpack我会得到

ERROR in ./index.ts
Module not found: Error: Can't resolve './global' in <full-path-to-app>
 @ ./index.ts 1:0-29 2:12-13

但是，如果我改为从./global.ts导入已声明的接口，则不会有错误。说，

// global.ts
export interface Dict {
    [key: string]: string
}

// index.ts
import { Dict } from "./global";
const d: Dict = { key: "value" };
console.log(d);

这很好。那么，这里出了什么问题？ （为方便起见，创建了Reference）