esm-loader-typescript

esm-loader-typescript

Node.js ESModule Loader for importing and loading Typescript (.ts) files and transpiling on the fly.

Warning! Using experimental Node.js features and flags, API will likely change. This may be helpful for development and testing, but should not be used in production.

Usage

npm install --save-dev esm-loader-typescript

We want to import a .ts file with Node.js:

// index.ts
const words: string = 'hello'
console.log(words)
// 'hello'

Standalone

NODE_OPTIONS="--experimental-loader esm-loader-typescript" node index.ts

Chainable

This loader can be configured, and chained with other loaders, using node-esm-loader. This should be your only loader handling Typescript files.

npm install --save-dev node-esm-loader

// .loaderrc.js
export default {
  loaders: ['esm-loader-typescript'],
}

NODE_OPTIONS="--experimental-loader node-esm-loader" node index.ts

Debug

// .loaderrc.js
export default {
  loaders: [
    {
      loader: 'esm-loader-typescript',
      options: {
        debug: true,
      },
    },
  ],
}

License

MIT