contingent/lib/browser-lib.js

Create cryptographically-strong random numbers in node.js or the browser

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function randomBytes(n) {
    const crypto = window.crypto || window.msCrypto;
    if (crypto == null) {
        throw new Error('crypto not found for randomBytes');
    }
    const uint8 = crypto.getRandomValues(new Uint8Array(n));
    return new DataView(uint8.buffer);
}
exports.randomBytes = randomBytes;
function randomBit() {
    return randomBytes(1).getUint8(0) % 2 === 0;
}
exports.randomBit = randomBit;
function randomByte() {
    return randomBytes(1).getUint8(0);
}
exports.randomByte = randomByte;
function randomInt() {
    return randomBytes(4).getInt32(0);
}
exports.randomInt = randomInt;
function randomUint() {
    return randomBytes(4).getUint32(0);
}
exports.randomUint = randomUint;
exports.default = {
    randomBytes,
    randomBit,
    randomByte,
    randomInt,
    randomUint,
};