BendingBenderObject.assign shim
An Object.assign shim for ES5-compliant environments (browsers/node.js/io.js). Is applied only when needed with a few exceptions for non-compliant implementations.
Takes a minimum of 2 arguments: target and source.
Takes a variable sized list of source arguments - at least 1, as many as you want.
Throws a TypeError if the target argument is null or undefined.
Most common usage:
In node/io.js:
require('object-assign-shim');In a browser:
<script src="object-assign-shim/index.js"></script>Example
// Multiple sources!
var target = { a: true };
var source1 = { b: true };
var source2 = { c: true };
var sourceN = { n: true };
var expected = {
a: true,
b: true,
c: true,
n: true
};
require('object-assign-shim');
var assert = require('assert');
Object.assign(target, source1, source2, sourceN);
assert.deepEqual(target, expected); // AWESOME!require('object-assign-shim');
var assert = require('assert');
var target = {
a: true,
b: true,
c: true
};
var source1 = {
c: false,
d: false
};
var sourceN = {
e: false
};
var assigned = Object.assign(target, source1, sourceN);
assert.equal(target, assigned); // returns the target object
assert.deepEqual(assigned, {
a: true,
b: true,
c: false,
d: false,
e: false
});var assert = require('assert');
/* when Object.assign is not present */
delete Object.assign;
require('object-assign-shim');
assert.equal(typeof Object.assign, "function");
var target = {
a: true,
b: true,
c: true
};
var source = {
c: false,
d: false,
e: false
};
var assigned = assign(target, source);
assert.deepEqual(Object.assign(target, source), assign(target, source));var assert = require('assert');
/* when Object.assign is present */
assert.equal(typeof Object.assign, 'function');
var builtinAssign = Object.assign;
require('object-assign-shim');
assert.equal(builtinAssign, Object.assign);Tests
Simply clone the repo, npm install, and run npm test