Array.prototype.find

The `find()` method returns the value of the first item in the array based on the result of the provided testing function.

Array.prototype.findIndex

The `findIndex()` method returns the index of the first element in the array that satisfies the provided testing function.

Array.prototype.includes

Determines whether or not an array includes the given value, returning a boolean value (unlike `indexOf`).

ECMAScript 5

Full support for the ECMAScript 5 specification. Features include `Function.prototype.bind`, Array methods like `indexOf`, `forEach`, `map` & `filter`, Object methods like `defineProperty`, `create` & `keys`, the `trim` method on Strings and many more.

Object.entries

The `Object.entries()` method creates a multi-dimensional array of key value pairs from the given object.

Object.values method

The `Object.values()` method returns an array of a given object's own enumerable property values.

Rest parameters

Allows representation of an indefinite number of arguments as an array.

Shared Array Buffer

Type of ArrayBuffer that can be shared across Workers.

SVG (basic support)

Method of displaying basic Vector Graphics features using the embed or object elements. Refers to the SVG 1.1 spec.

TextEncoder & TextDecoder

`TextEncoder` encodes a JavaScript string into bytes using the UTF-8 encoding and returns the resulting `Uint8Array` of those bytes. `TextDecoder` does the reverse.

dommatrixreadonly api: `tofloat32array()`

dommatrixreadonly api: `tofloat64array()`

javascript built-in: arraybuffer: transfertofixedlength

javascript built-in: array: indexof

javascript built-in: array: lastindexof

javascript built-in: array: length

javascript built-in: array: of

javascript built-in: typedarray: byteoffset

javascript built-in: typedarray: indexof

javascript built-in: typedarray: lastindexof

javascript built-in: typedarray: name

javascript built-in: typedarray: of

ecmascript 2016 (es7)

ecmascript 2018 (es9)

ecmascript 2019 (es10)