@aikidosec/firewall/helpers/isESM.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.isESM = isESM;
/**
 * Checks at runtime if the Node.js application is using ESM.
 * As it depends on the stack trace, it should be used directly after the file got imported / at top level of the library.
 */
function isESM() {
    // Save current stack trace limit and increase it a bit, to make sure we don't get too few frames
    const currentStackTraceLimit = Error.stackTraceLimit;
    Error.stackTraceLimit = 15;
    // Capture the current stack trace
    const stack = new Error().stack || "";
    // Reset stack trace limit
    Error.stackTraceLimit = currentStackTraceLimit;
    return stack.includes("node:internal/modules/esm/loader:");
}