rumble-charts/es/helpers/random.js

Truly declarative React charts components

function random(lower, upper, floating) {
    if (lower === void 0) { lower = 0; }
    if (upper === void 0) { upper = 1; }
    if (floating === void 0) { floating = false; }
    var value = lower + cryptoRand() * upper;
    if (!floating) {
        value = Math.trunc(value);
    }
    return value;
}
var crypto = typeof window === 'undefined' ? (window.crypto || window.msCrypto) : window.crypto;
var cryptoRand = typeof window === 'undefined'
    ? function () {
        var buf = crypto.randomBytes(4);
        var dataView = new DataView(toArrayBuffer(buf));
        var uint = dataView.getUint32(0);
        return uint / (0xffffffff + 1); // 0xFFFFFFFF = uint32.MaxValue (+1 because Math.random is inclusive of 0, but not 1)
    } : function () {
    var array = new Int8Array(4);
    crypto.getRandomValues(array);
    var dataView = new DataView(array.buffer);
    var uint = dataView.getUint32(0);
    return uint / (0xffffffff + 1); // 0xFFFFFFFF = uint32.MaxValue (+1 because Math.random is inclusive of 0, but not 1)
};
function toArrayBuffer(buf) {
    var ab = new ArrayBuffer(buf.length);
    var view = new Uint8Array(ab);
    for (var i = 0; i < buf.length; ++i) {
        view[i] = buf[i];
    }
    return ab;
}

export { random };