emit

Transpile and bundle JavaScript and TypeScript in Deno and Deno Deploy.

This is an unstable module, where the API is likely to change over time.

Transpiling

Take individual modules that are JavaScript or TypeScript and emit them in a transpiled fashion. An example of taking some TypeScript and transpiling to JavaScript:

import { transpile } from "https://deno.land/x/emit/mod.ts";

const url = new URL("./testdata/mod.ts", import.meta.url);
const result = await transpile(url);

const code = result.get(url.href);
console.log(code.includes("export default function hello()"));

Bundle

Take a root module and all its dependencies and emit a single JavaScript bundle. This is similar to the functionality provided by deno bundle on the Deno command line. An example:

import { bundle } from "https://deno.land/x/emit/mod.ts";
const result = await bundle(
  new URL("https://deno.land/std@0.140.0/examples/chat/server.ts"),
);

const { code } = result;
console.log(code);