isUint8Array

isUint8Array :: a → Boolean

Evaluates whether the given value is of type UInt8Array

import isUint8Array from 'deep-waters/isUint8Array';

const x = new Uint8Array([21, 31]);

isUint8Array(x); // → true

isUint8Array(20); // → false
isUint8Array("hello"); // → false
isUint8Array(undefined"); // → false

isUint8Array, like any other type validator, is mostly used in composed validators:

import isString from 'deep-waters/isString';
import matchesPattern from 'deep-waters/matchesPattern';

const isEmail = compose(
  isString,
  matchesPattern(/^\w+([.-]?\w+)*@\w+([.-]?\w+)*(\.\w{2,3})+$/),
);

isUint8Array is built on top of the ofClass validator and rely on Object.prototype.toString to check on the received value type in order to avoid typeof weird behaviours and encouraging a runtime strict type validation.