Function isObject

isObject(value: unknown): value is Record<string | number | symbol, unknown>

Type guard to check if a value is a non-null object

Useful for safely checking if a value is an object before accessing properties. Filters out null, arrays, and primitive values.

Parameters

value: unknown
Value to check

Returns value is Record<string | number | symbol, unknown>

True if value is a non-null object (excludes arrays)

Example

isObject({})              // true
isObject({ key: 'val' })  // true
isObject(null)            // false
isObject([])              // false (arrays excluded)
isObject('string')        // false
isObject(123)             // false

// Usage in code
const data: unknown = getUserData();
if (isObject(data) && 'name' in data) {
  console.log(data.name); // Safe property access
}