InternalError

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

The InternalError object indicates an error that occurred internally in the JavaScript engine.

Example cases are mostly when something is too large, e.g.:

"too many switch cases",
"too many parentheses in regular expression",
"array initializer too large",
"too much recursion".

InternalError is a subclass of Error.

Constructor

InternalError()

Creates a new InternalError object.

Instance properties

Also inherits instance properties from its parent Error.

These properties are defined on InternalError.prototype and shared by all InternalError instances.

InternalError.prototype.constructor

The constructor function that created the instance object. For InternalError instances, the initial value is the InternalError constructor.

InternalError.prototype.name

Represents the name for the type of error. For InternalError.prototype.name, the initial value is "InternalError".

js
function loop(x) {
  // "x >= 10" is the exit condition
  if (x >= 10) return;

  // do stuff
  loop(x + 1); // the recursive call
}
loop(0);

Setting this condition to an extremely high value, may not work:

js
function loop(x) {
  if (x >= 1000000000000) return;

  // do stuff
  loop(x + 1);
}
loop(0);

// InternalError: too much recursion

For more information, see InternalError: too much recursion.

Specifications

Not part of any standard.

Browser compatibility

Enable JavaScript to view this browser compatibility table.

Help improve MDN

Was this page helpful to you?

Yes No

Learn how to contribute

This page was last modified on Jul 10, 2025 by MDN contributors.

View this page on GitHub • Report a problem with this content

Standard built-in objects
InternalError
Constructor
1. InternalError()
Inheritance
Error
Constructor
1. Error()
Static methods
1. captureStackTrace()
2. isError()
Static properties
1. stackTraceLimit
Instance methods
1. toString()
Instance properties
1. cause
2. columnNumber
3. fileName
4. lineNumber
5. message
6. name
7. stack
Object/Function
Static methods
1. apply()
2. bind()
3. call()
4. toString()
5. [Symbol.hasInstance]()
Static properties
1. displayName
2. length
3. name
4. prototype
5. arguments
6. caller
Instance methods
1. __defineGetter__()
2. __defineSetter__()
3. __lookupGetter__()
4. __lookupSetter__()
5. hasOwnProperty()
6. isPrototypeOf()
7. propertyIsEnumerable()
8. toLocaleString()
9. toString()
10. valueOf()
Instance properties
1. __proto__
2. constructor
Related pages
AggregateError
EvalError
RangeError
ReferenceError
SyntaxError
TypeError
URIError

InternalError

In this article

Constructor

Instance properties

Instance methods

Examples

Too much recursion

Specifications

Browser compatibility

See also

Help improve MDN