Function isEmpty

Returns true if passed argument seems to be empty. Nil values are empty. Strings are considered empty when length is 0. Other primitives will throw an error. Objects are considered empty when doesn't have any enumerable & own property. Arrays and array-like objects are considered empty when length value is 0. Map, Set and -like objects are considered empty when size value is 0.

Example

isEmpty({}) // true

Example

isEmpty(100) // throws

Example

isEmpty([]) // true

Example

isEmpty([1]) // false

Example

isEmpty({ length: 5 }) // false

Example

isEmpty({ length: 0 }) // true

Example

isEmpty({ size: 0 }) // true
  • isEmpty(obj): boolean

  • Parameters

    • obj: unknown

      source value

    Returns boolean

    • is value considered empty

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