TypeError: null/undefined has no properties
The JavaScript exception "null (or undefined) has no properties" occurs when you
attempt to access properties of undefined. They
don't have any.
Message
TypeError: Cannot read properties of undefined (reading 'x') (V8-based) TypeError: Cannot destructure 'x' as it is undefined. (V8-based) TypeError: Cannot destructure property 'x' of 'y' as it is undefined. (V8-based) TypeError: null has no properties (Firefox) TypeError: undefined has no properties (Firefox) TypeError: undefined is not an object (evaluating 'undefined.x') (Safari) TypeError: Right side of assignment cannot be destructured (Safari)
Error type
property accessors on them, or destructure them.
Examples
null and undefined have no properties
js
null.foo;
/ TypeError: null has no properties
undefined.bar;
/ TypeError: undefined has no properties