@aikidosec/firewall/helpers/indexImportGuard.js

Zen by Aikido is an embedded Application Firewall that autonomously protects Node.js apps against common and critical attacks, provides rate limiting, detects malicious traffic (including bots), and more.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.checkIndexImportGuard = checkIndexImportGuard;
const symbol = Symbol.for("zen.nodejs.index.run.once");
function checkIndexImportGuard() {
    const globalState = globalThis;
    if (globalState[symbol]) {
        // eslint-disable-next-line no-console
        console.error("AIKIDO: Zen has already been initialized. This can lead to unexpected behavior and may be caused by cleaning the require cache or using multiple installations of Zen at the same time.");
        return false;
    }
    globalState[symbol] = true;
    return true;
}