@bsv/sdk/dist/cjs/src/primitives/Random.js

BSV Blockchain Software Development Kit

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class Rand {
    constructor() {
        const noRand = () => {
            throw new Error('No secure random number generator is available in this environment.');
        };
        this._rand = noRand; // Assign the function
        if (typeof self === 'object') {
            /* eslint-disable-next-line */
            if (self.crypto?.getRandomValues) {
                this._rand = (n) => {
                    const arr = new Uint8Array(n);
                    /* eslint-disable-next-line */
                    self.crypto.getRandomValues(arr);
                    return [...arr];
                };
            } /* if (typeof window === 'object') */
            else {
                this._rand = noRand;
            }
        }
        else {
            try {
                /* eslint-disable-next-line */
                const crypto = require("crypto");
                if (typeof crypto.randomBytes === 'function') {
                    this._rand = (n) => [...crypto.randomBytes(n)];
                }
            }
            catch {
                this._rand = noRand;
            }
        }
    }
    generate(len) {
        return this._rand(len);
    }
}
let ayn = null;
/**
 * Generates a sequence of pseudo-random bytes with the given length.
 *
 * @param len - The number of bytes to generate
 *
 * @returns The generated bytes
 *
 * @example
 * import Random from '@bsv/sdk/primitives/Random'
 * const bytes = Random(32) // Produces 32 random bytes
 */
exports.default = (len) => {
    if (ayn == null) {
        ayn = new Rand();
    }
    return ayn.generate(len);
};
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