Runtime

This is a runtime library for TypeScript that contains all of the TypeScript helper functions.

Installing

For the latest stable version:

npm install tslib

Usage

Set the noEmitHelpers compiler option on the command line or in your tsconfig.json:

tsc --noEmitHelpers

Import tslib in your TypeScript sources:

import * as tslib from "tslib";

const __extends = tslib.__extends;
const __awaiter = tslib.__awaiter;

...

Or use it globally on the web via <script src="tslib.js"></script>:

// <reference path="tslib.global.d.ts" />
var __extends = __tslib.__extends;
var __awaiter = __tslib.__awaiter;

...

Contribute

There are many ways to contribute to TypeScript.

• Submit bugs and help us verify fixes as they are checked in.
• Review the source code changes.
• Engage with other TypeScript users and developers on StackOverflow.
• Join the #typescript discussion on Twitter.
• Contribute bug fixes.
• Read the language specification (docx, pdf).

Documentation

• Quick tutorial
• Programming handbook
• Language specification
• Homepage