mirror of https://github.com/jkjoy/sunpeiwen.git
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test | ||
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CHANGELOG.md | ||
LICENSE | ||
README.md | ||
auto.js | ||
implementation.browser.js | ||
implementation.js | ||
index.js | ||
package.json | ||
polyfill.js | ||
shim.js |
README.md
globalThis
An ECMAScript spec-compliant polyfill/shim for globalThis
. Invoke its "shim" method to shim globalThis
if it is unavailable.
This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec proposal.
Most common usage:
var globalThis = require('globalthis')(); // returns native globalThis if compliant
/* or */
var globalThis = require('globalthis/polyfill')(); // returns native globalThis if compliant
Example
var assert = require('assert');
// the below function is not CSP-compliant, but reliably gets the
// global object in sloppy mode in every engine.
var getGlobal = Function('return this');
assert.equal(globalThis, getGlobal());
/* when `globalThis` is not present */
var shimmedGlobal = require('globalthis').shim();
/* or */
var shimmedGlobal = require('globalthis/shim')();
assert.equal(shimmedGlobal, globalThis);
assert.equal(shimmedGlobal, getGlobal());
/* when `globalThis` is present */
var shimmedGlobal = require('globalthis').shim();
assert.equal(shimmedGlobal, globalThis);
assert.equal(shimmedGlobal, getGlobal());
Tests
Simply clone the repo, npm install
, and run npm test