JSPM – handle-arguments@1.0.3

Package Exports

handle-arguments

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (handle-arguments) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Handles given Arguments object - return separatly last argument (commonly callback) and other arguments as Array. Useful in node-style callback flow. Used by hybridify

Install

npm install handle-arguments
npm test

Usage

For more use-cases see the tests

var handleArguments = require('handle-arguments');

function fixture() {
  var argz = handleArguments(arguments);
  return argz;
}

console.log(fixture(1, 2, 3));
//=> {callback: [Function: defaultHandleArgumentsCallback],
// arguments: [1, 2, 3], args: [1, 2, 3]}
//=> [Function: defaultHandleArgumentsCallback] is empty function (noop)

console.log(fixture(1, 2, function cb() {}));
//=> {callback: [Function: cb], arguments: [1, 2], args: [1, 2]}

instead of commonly used pattern

function fixture() {
  var args = [].slice.call(arguments);
  var len = args.length
  var callback = args[len - 1];

  if (typeof callback === 'function') {
    args = args.slice(0, -1)
    callback.apply(undefined, [null].concat(args))
  }
  return args;
}

Or more real world examples callback-and-promise, thenify, thenify-all and a lot more...

Author

Charlike Mike Reagent

License

Powered and automated by kdf, January 26, 2015

handle-arguments