rc-hammer/src/utils/utils-consts.js

use hammerjs in React/ReactNative

const VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o'];

const TYPE_FUNCTION = 'function';

const { round, abs } = Math;
const { now } = Date;

export {
    VENDOR_PREFIXES,
    TYPE_FUNCTION,
    round,
    abs,
    now
};