TypeError: More arguments needed
The JavaScript exception "more arguments needed" occurs when there is an error with how a function is called. More arguments need to be provided.
Message
TypeError: Object prototype may only be an Object or null: undefined (V8-based) TypeError: Object.create requires at least 1 argument, but only 0 were passed (Firefox) TypeError: Object.setPrototypeOf requires at least 2 arguments, but only 0 were passed (Firefox) TypeError: Object.defineProperties requires at least 1 argument, but only 0 were passed (Firefox) TypeError: Object prototype may only be an Object or null. (Safari)
Error type
What went wrong?
There is an error with how a function is called. More arguments need to be provided.
Examples
Required arguments not provided
The Object.create()
method requires at least one argument and the
Object.setPrototypeOf()
method requires at least two arguments:
js
const obj = Object.create();
// TypeError: Object.create requires at least 1 argument, but only 0 were passed
const obj2 = Object.setPrototypeOf({});
// TypeError: Object.setPrototypeOf requires at least 2 arguments, but only 1 were passed
You can fix this by setting null
as the prototype, for example:
js
const obj = Object.create(null);
const obj2 = Object.setPrototypeOf({}, null);