ext

ext

(Previously known as es5-ext)

JavaScript standard extensions (with respect to evolving standard)

Non-standard or soon to be standard language utilities in a future proof, non-invasive form.

Doesn't enforce transpilation step. Where it's applicable utilities/extensions are safe to use in all ES3+ implementations.

Installation

npm install ext

Utilities

Global

globalThis (ext/global-this)

Returns global object. Resolve native globalThis if implemented, otherwise fallback to internal resolution of a global object.

const globalThis = require("ext/global-this");

globalThis.Array === Array; // true

Object

Object.entries (ext/object/entries)

Object.entries implementation.

Returns native Object.entries if it's implemented, otherwise library implementation is returned

const entries = require("ext/object/entries");

entries({ foo: "bar" }); // [["foo", "bar"]]

Function

Function.identity (ext/function/identity)

Returns input argument.

const identity = require("ext/function/identity");

identity("foo"); // "foo"

Thenable.prototype

thenable.finally (ext/thenable_/finally)

finally method for any thenable input

const finally = require("ext/thenable_/finally");

finally.call(thenable, () => console.log("Thenable resolved"));

Math

Math.ceil10 (ext/math/ceil-10)

Decimal ceil

const ceil10 = require("ext/math/ceil-10");

ceil10(55.51, -1); // 55.6
ceil10(-59, 1); // -50;

Math.floor10 (ext/math/floor-10)

Decimal floor

const floor10 = require("ext/math/floor-10");

floor10(55.59, -1); // 55.5
floor10(59, 1); // 50

Math.round10 (ext/math/round-10)

Decimal round

const round10 = require("ext/math/round-10");

round10(55.549, -1); // 55.5
round10(1.005, -2); // 1.01