A bind polyfill that returns a GeneratorFunction when the function being bound is a generator
npm install generator-bind
A bind polyfill that returns a GeneratorFunction when the function being bound is a generator.
``
npm install generator-bind
I found what I believe to be a deficiency in the bind function in node v0.11 whereby calling bind on a generator returns a normal function.
`js
function normalFunc() {...}
normalFunc.constructor.name // Function
normalFunc.bind(null).constructor.name // Function
function* genFunc() {...}
genFunc.constructor.name // GeneratorFunction
genFunc.bind(null).constructor.name // Function
`
This can cause issues when attempting to use the various async libraries that utilize generators with an OOP design pattern.
`js
function Klass() {...}
Klass.prototype.someAsync = function* () {...}
let inst = new Klass();
co(inst.someAsync.bind(inst))()
`
The above code will cause an error with co because the native bind function does not return a generator.
This is why I've built generator-bind.
It can be used as a function:
`js`
let genbind = require('generator-bind');
genbind(ctx, genFunc);
or a polyfill:
`js`
let genbind = require('generator-bind').polyfill();
genFunc.bind(ctx);
The polyfill also returns the new bind` function so if you choose to use the polyfill you have the option of using the function as well.
Copyright (c) 2014 Michael Diolosa <michael.diolosa@gmail.com>
This library is licensed under the MIT license.