teppeis / closure-library.ts

A bridge to use Closure Library with TypeScript

closure-library.ts

Closure Library for TypeScript

This is all-in-one package to use Closure Library with TypeScript including:

• Latest Closure Library (patched for TypeScript)
• Type declaration files (d.ts) of Closure Library (closure-library.d.ts)
• Bridge utility for zero config usage

Install

$ npm install closure-library.ts

Usage

// Import index.ts to load type information of Closure Library.
import closure = require('./node_modules/closure-library.ts/index');
// Call register() to enable `goog.requrie()`.
closure.register();
// Then `googl.require` returns the namespace!
var Queue = goog.require('goog.structs.Queue');
// Type information of Closure Library is available in TypeScript.
var q = new Queue<number>();
q.enqueue(10);
q.enqueue(20);
q.enqueue(30);
var n: number = q.dequeue(); // n = 10, ok!
var s: string = q.dequeue(); // Error! "Type 'number' is not assignable to type 'string'."

Once closure-library.ts is registered in the top of your bootstrap file, you don't have to register() in each dependent file.

License

MIT License: Teppei Sato <[email protected]>

closure-library.ts's Issues

TypeError: goog.require is not a function

Following the example in the readme, I'm doing

import closure = require('../../node_modules/closure-library.ts/index')

I was getting the following error:

<snip>/node_modules/closure-library.ts/index.ts:5
    declare function require(name: string): any;
            ^^^^^^^^

    SyntaxError: Unexpected token function

As my compiler was trying to import the ts version instead of the js one.

So I changed it to:

import closure = require('../../node_modules/closure-library.ts/index.js')

Or better yet

import * as closure from 'closure-library.ts'
closure.register()
const Queue = goog.require('goog.structs.Queue')

And that gets me closer, but then I'm getting the following error:

TypeError: goog.require is not a function

My environment

"closure-library.ts": "1.0.0"
"typescript": "2.5.3"