codeMan 0c1219796a 测试提交 1 rok pred
..
.github 0c1219796a 测试提交 1 rok pred
dist 0c1219796a 测试提交 1 rok pred
test 0c1219796a 测试提交 1 rok pred
.editorconfig 0c1219796a 测试提交 1 rok pred
.eslintrc 0c1219796a 测试提交 1 rok pred
.nycrc 0c1219796a 测试提交 1 rok pred
CHANGELOG.md 0c1219796a 测试提交 1 rok pred
LICENSE 0c1219796a 测试提交 1 rok pred
README.md 0c1219796a 测试提交 1 rok pred
auto.js 0c1219796a 测试提交 1 rok pred
hasSymbols.js 0c1219796a 测试提交 1 rok pred
implementation.js 0c1219796a 测试提交 1 rok pred
index.js 0c1219796a 测试提交 1 rok pred
package.json 0c1219796a 测试提交 1 rok pred
polyfill.js 0c1219796a 测试提交 1 rok pred
shim.js 0c1219796a 测试提交 1 rok pred
test.html 0c1219796a 测试提交 1 rok pred

README.md

object.assign Version Badge

github actions coverage dependency status dev dependency status License Downloads

npm badge

An Object.assign shim. Invoke its "shim" method to shim Object.assign if it is unavailable.

This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec. In an ES6 environment, it will also work properly with Symbols.

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:

var assign = require('object.assign').getPolyfill(); // returns native method if compliant
	/* or */
var assign = require('object.assign/polyfill')(); // returns native method if compliant

Example

var assert = require('assert');

// 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
};

assign(target, source1, source2, sourceN);
assert.deepEqual(target, expected); // AWESOME!
var target = {
	a: true,
	b: true,
	c: true
};
var source1 = {
	c: false,
	d: false
};
var sourceN = {
	e: false
};

var assigned = 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
});
/* when Object.assign is not present */
delete Object.assign;
var shimmedAssign = require('object.assign').shim();
	/* or */
var shimmedAssign = require('object.assign/shim')();

assert.equal(shimmedAssign, assign);

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));
/* when Object.assign is present */
var shimmedAssign = require('object.assign').shim();
assert.equal(shimmedAssign, Object.assign);

var target = {
	a: true,
	b: true,
	c: true
};
var source = {
	c: false,
	d: false,
	e: false
};

assert.deepEqual(Object.assign(target, source), assign(target, source));

Tests

Simply clone the repo, npm install, and run npm test