import { isIE } from "./browser";
function makeRandFunction() {
    if (typeof window !== "undefined") {
        const c = window.crypto || window.msCrypto;
        if (!c) {
            if (isIE("<", 11)) {
                console.warn("IE <= 10 uses insecure random generator. Please consider to use IE11 or another modern browser");
                return function rand() {
                    return Math.floor(Math.random() * 512) % 256;
                };
            }
            throw new Error("Crypto module not found");
        }
        return function rand() {
            return c.getRandomValues(new Uint32Array(1))[0];
        };
    }
    else if (typeof global !== "undefined" && global.crypto) {
        return function rand() {
            return global.crypto.randomBytes(4).readInt32LE();
        };
    }
    else if (typeof require === "function") {
        return function rand() {
            // Prevent webpack to automatically require("crypto").
            // eslint-disable-next-line @typescript-eslint/ban-ts-comment
            // @ts-ignore
            return __non_webpack_require__("crypto").randomBytes(4).readInt32LE();
        };
    }
    throw new Error("Unable to find crypto module");
}
export const random = makeRandFunction();