# Check

engine/Source/Core/Check.js 8
Contains functions for checking that supplied arguments are of a specified type or meet specified conditions

### Members

#### static Cesium.Check.typeOf
engine/Source/Core/Check.js 13

Contains type checking functions, all using the typeof operator

### Methods

#### static Cesium.Check.defined(name, test)
engine/Source/Core/Check.js 30

Throws if test is not defined

Name | Type | Description
--- | --- | ---
`name` | string | The name of the variable being tested
`test` | * | The value that is to be checked

##### Throws:

- DeveloperError : test must be defined

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