requireObject
function requireObject(value: unknown, message: string = "Expected an object."): object;
The test is typeof value === "object" with null excluded, so arrays, dates and class instances all count, while a function does not. isObjectLike is the one that also accepts functions.
isX and nonX answer a question and never interrupt control flow; requireX and requireNonX hand the value back or throw. The scheme is explained in Validation conventions.
Parameters
Parameter | Type | Description |
|---|---|---|
|
| The value to validate. |
|
| The message of the exception. A default is used when omitted. |
Returns
object — the same value, typed as an object.
Throws
Exception | Condition |
|---|---|
| the value is not an object. |
Examples
What passes and what does not
requireObject({}); // => {}
requireObject([]); // => []
requireObject(null); // throws IllegalArgumentException
requireObject("abc"); // throws IllegalArgumentException
See also
Source
23 September 2026
This documentation was generated with AI (Claude) from the library's source code.