es-async

ES2017 async functions compiler

Backed by nodent-compiler, compiles async/await syntax into valid ES2016 code.

Installation

$ npm install es-async

CLI usage

Compile JS file using async/await into ES2016 compliant JS file:

npx es-async path-to-es2017-file.js > path-to-es2016-file.js

Programmatical usage

Compile async code directly

const compileAsync = require("es-async");

const es2016Code = compileAsync(es2017Code);

Compile specific file

const compileAsyncFromFile = require("es-async/from-file");

compileFromFile(es2017Filename).then(es2016Code => {
	// Process compiled code
});

Result examples

See online demo. Compilation is handled by preconfigured (to reflect native behavior backed by native promises) nodent-compiler

ES2017	ES016
async function asyncAdd(left) { return left + (await right); }	function asyncAdd(left) { return new Promise(($return, $error) => Promise.resolve(right).then($await_1 => { try { return $return(left + $await_1); } catch ($boundEx) { return $error($boundEx); } }, $error) ); }

Tests

$ npm test

Project cross-browser compatibility supported by: