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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
/**
*
* The site's Flutter app (FlutterFire firebase_core_web) calls
* self.firebase_core.getApps() before the Firebase JS SDK is loaded, and
* only treats the resulting TypeError as "SDK not loaded yet" if the error
* string or its stack contains "of undefined" (V8's "Cannot read properties
* of undefined" wording). SpiderMonkey words the message differently and its
* stack has no message line, so the error is rethrown and the app never
* boots. We prepend a V8-like message line to the stack of such TypeErrors.
*/
if (
(function () {
try {
self[new Date()].nonexistent;
return true;
} catch (e) {
return !e.stack.includes("Cannot read properties of undefined");
}
})()
) {
const desc = Object.getOwnPropertyDescriptor(Error.prototype, "stack");
if (desc?.get) {
const origGet = desc.get;
const isUndefinedRE = /\bis undefined$/;
desc.get = function () {
const stack = origGet.call(this);
try {
if (
this instanceof TypeError &&
typeof stack === "string" &&
isUndefinedRE.test(this.message)
) {
return `TypeError: Cannot read properties of undefined (${this.message})\n${stack}`;
}
} catch (_) {}
return stack;
};
// eslint-disable-next-line no-extend-native
Object.defineProperty(Error.prototype, "stack", desc);
console.info(
"Error.prototype.stack has been altered for compatibility reasons. See https://bugzil.la/2000604 for details."
);
}
}