"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
0 && (module.exports = {
    installProcessErrorHandlers: null,
    isUnhandledRejectionListenerRegistered: null,
    registerUnhandledRejectionListener: null
});
function _export(target, all) {
    for(var name in all)Object.defineProperty(target, name, {
        enumerable: true,
        get: all[name]
    });
}
_export(exports, {
    installProcessErrorHandlers: function() {
        return installProcessErrorHandlers;
    },
    isUnhandledRejectionListenerRegistered: function() {
        return isUnhandledRejectionListenerRegistered;
    },
    registerUnhandledRejectionListener: function() {
        return registerUnhandledRejectionListener;
    }
});
const _ispostpone = require("../lib/router-utils/is-postpone");
const _log = /*#__PURE__*/ _interop_require_wildcard(require("../../build/output/log"));
function _getRequireWildcardCache(nodeInterop) {
    if (typeof WeakMap !== "function") return null;
    var cacheBabelInterop = new WeakMap();
    var cacheNodeInterop = new WeakMap();
    return (_getRequireWildcardCache = function(nodeInterop) {
        return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
    })(nodeInterop);
}
function _interop_require_wildcard(obj, nodeInterop) {
    if (!nodeInterop && obj && obj.__esModule) {
        return obj;
    }
    if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
        return {
            default: obj
        };
    }
    var cache = _getRequireWildcardCache(nodeInterop);
    if (cache && cache.has(obj)) {
        return cache.get(obj);
    }
    var newObj = {
        __proto__: null
    };
    var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
    for(var key in obj){
        if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) {
            var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
            if (desc && (desc.get || desc.set)) {
                Object.defineProperty(newObj, key, desc);
            } else {
                newObj[key] = obj[key];
            }
        }
    }
    newObj.default = obj;
    if (cache) {
        cache.set(obj, newObj);
    }
    return newObj;
}
let _global = globalThis;
// The listener function is shared via globalThis so that multiple copies of
// this module (e.g. in the pre-compiled server bundle and in a route module
// bundle) still register and detect a single listener instance.
const UNHANDLED_REJECTION_LISTENER_KEY = Symbol.for('next.unhandledRejectionListener');
function unhandledRejectionListener(reason) {
    if ((0, _ispostpone.isPostpone)(reason)) {
        // React postpones that are unhandled might end up logged here but they're
        // not really errors. They're just part of rendering.
        return;
    }
    // Immediately log the error.
    // TODO: Ideally, if we knew that this error was triggered by application
    // code, we would suppress it entirely without logging. We can't reliably
    // detect all of these, but when cacheComponents is enabled, we could suppress
    // at least some of them by waiting to log the error until after all in-
    // progress renders have completed. Then, only log errors for which there
    // was not a corresponding "rejectionHandled" event.
    _log.error('unhandledRejection:', reason);
}
function isUnhandledRejectionListenerRegistered() {
    const listener = _global[UNHANDLED_REJECTION_LISTENER_KEY];
    return listener !== undefined && process.listeners('unhandledRejection').includes(listener);
}
function registerUnhandledRejectionListener() {
    if (isUnhandledRejectionListenerRegistered()) {
        return;
    }
    const listener = _global[UNHANDLED_REJECTION_LISTENER_KEY] ??= unhandledRejectionListener;
    process.on('unhandledRejection', listener);
}
function installProcessErrorHandlers(shouldRemoveUncaughtErrorAndRejectionListeners) {
    if (!_global.nextInitializedProcessErrorHandlers) {
        _global.nextInitializedProcessErrorHandlers = true;
        // The conventional wisdom of Node.js and other runtimes is to treat
        // unhandled errors as fatal and exit the process.
        //
        // But Next.js is not a generic JS runtime — it's a specialized runtime for
        // React Server Components.
        //
        // Many unhandled rejections are due to the late-awaiting pattern for
        // prefetching data. In Next.js it's OK to call an async function without
        // immediately awaiting it, to start the request as soon as possible
        // without blocking unncessarily on the result. These can end up
        // triggering an "unhandledRejection" if it later turns out that the
        // data is not needed to render the page. Example:
        //
        //     const promise = fetchData()
        //     const shouldShow = await checkCondition()
        //     if (shouldShow) {
        //       return <Component promise={promise} />
        //     }
        //
        // In this example, `fetchData` is called immediately to start the request
        // as soon as possible, but if `shouldShow` is false, then it will be
        // discarded without unwrapping its result. If it errors, it will trigger
        // an "unhandledRejection" event.
        //
        // Ideally, we would suppress these rejections completely without warning,
        // because we don't consider them real errors. (TODO: Currently we do warn.)
        //
        // But regardless of whether we do or don't warn, we definitely shouldn't
        // crash the entire process.
        //
        // Even a "legit" unhandled error unrelated to prefetching shouldn't
        // prevent the rest of the page from rendering.
        //
        // So, we're going to intentionally override the default error handling
        // behavior of the outer JS runtime to be more forgiving
        // Remove any existing "unhandledRejection" and "uncaughtException" handlers.
        // This is gated behind an experimental flag until we've considered the impact
        // in various deployment environments. It's possible this may always need to
        // be configurable.
        if (shouldRemoveUncaughtErrorAndRejectionListeners) {
            process.removeAllListeners('uncaughtException');
            process.removeAllListeners('unhandledRejection');
        }
        process.on('rejectionHandled', ()=>{
        // TODO: See note in the unhandledRejection listener above. In the
        // future, we may use the "rejectionHandled" event to de-queue an error
        // from being logged.
        });
        // Unhandled exceptions are errors triggered by non-async functions, so this
        // is unrelated to the late-awaiting pattern. However, for similar reasons,
        // we still shouldn't crash the process. Just log it.
        process.on('uncaughtException', (reason)=>{
            if ((0, _ispostpone.isPostpone)(reason)) {
                return;
            }
            console.error(reason);
        });
    }
    // Register the listener unconditionally, and not only during the guarded
    // initialization above: a previous registration may have been undone by the
    // `removeAllListeners` call of a later `installProcessErrorHandlers` call
    // (or by external code), and registering is a no-op if the listener is
    // still attached.
    registerUnhandledRejectionListener();
}

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