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bind-context

Bind context to a function and preserves her name. Can be used to change name of a function. The toString also works correctly.

Install

npm i bind-context --save

Usage

For more use-cases see the tests

const bindContext = require('bind-context')

bindContext

Bind context to a function and preserve her name.

Params

• ctx {Object|Function}: The context to pass bind or function.
• fn {Function|String=}: Function to bind context to, or new name for it.
• name {String=}: Name for the new function (optional, can be used to rename functions).
• returns {Function}: New function which will have ctx bound and correct .toString.

Example

var inspect = require('util').inspect
var bindContext = require('bind-context')

function hello () {
  // `this` context is `{foo: 'bar'}`
  return this.foo
}

// just returns same function
// as regular `.bind`, but also
// preserves the name of given function
var hi = bindContext({foo: 'zzz'}, hello, 'bar')

console.log(inspect(hi))      // => [Function: bar]
console.log(hi)               // => [Function: bar]
console.log(hi())             // => 'zzz'
console.log(hi.toString())    // => function bar () { ... code ... }
console.log(hi.name)          // => 'bar'

Signatures

bindContext.call(Object, Function)          // preserves name
bindContext.call(Object, Function, String)  // changes name

bindContext(Object, Function)          // preserves name (with context)
bindContext(Object, Function, String)  // changes name (with context)

bindContext(Function)          // preserves name (no context, saves Function's context if it has)
bindContext(Function, String)  // changes name (no context, saves Function's context if it has)

Related

• function-arguments: Get arguments of a function, useful for and used in dependency… more | homepage
• function-equal: Compares two functions, are they equal? Checks their names, bodies and… more | homepage
• get-fn-name: Get function name with strictness and correctness in mind. Also works… more | homepage
• parse-function: Parse a function, arrow function or string to object with name,… more | homepage
• rename-function: Rename a given function. Tries to be cross-platform and guaranteed. Useful… more | homepage
• smart-bind: Smarter binding of function with some context. It uses .apply instead… more | homepage

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
But before doing anything, please read the CONTRIBUTING.md guidelines.

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