ethers.js/packages/random/lib.esm/random.js

"use strict";
import { arrayify } from "@ethersproject/bytes";
import { Logger } from "@ethersproject/logger";
import { version } from "./_version";
const logger = new Logger(version);
// Debugging line for testing browser lib in node
//const window = { crypto: { getRandomValues: () => { } } };
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis
function getGlobal() {
    if (typeof self !== 'undefined') {
        return self;
    }
    if (typeof window !== 'undefined') {
        return window;
    }
    if (typeof global !== 'undefined') {
        return global;
    }
    throw new Error('unable to locate global object');
}
;
const anyGlobal = getGlobal();
let crypto = anyGlobal.crypto || anyGlobal.msCrypto;
if (!crypto || !crypto.getRandomValues) {
    logger.warn("WARNING: Missing strong random number source");
    crypto = {
        getRandomValues: function (buffer) {
            return logger.throwError("no secure random source avaialble", Logger.errors.UNSUPPORTED_OPERATION, {
                operation: "crypto.getRandomValues"
            });
        }
    };
}
export function randomBytes(length) {
    if (length <= 0 || length > 1024 || (length % 1) || length != length) {
        logger.throwArgumentError("invalid length", "length", length);
    }
    const result = new Uint8Array(length);
    crypto.getRandomValues(result);
    return arrayify(result);
}
;
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