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Variable: isEmpty

const isEmpty: Predicate<string | readonly unknown[] | Record<string, unknown>>

Defined in: predicate/comparison/index.ts:314

Creates a predicate that tests if a value is empty.

Works with strings, arrays, and objects.

  • Strings: empty if length === 0
  • Arrays: empty if length === 0
  • Objects: empty if has no own properties

Returns​

A predicate that returns true if value is empty

Example​

import * as R from 'remeda'

R.filter(['', 'hello', '', 'world'], isEmpty) // => ['', '']
R.filter([[], [1, 2], []], isEmpty) // => [[], []]
R.filter([{}, { a: 1 }, {}], isEmpty) // => [{}, {}]

// Real-world: Remove empty form fields
const formData = { name: 'Alice', email: '', bio: 'Developer' }
R.pipe(
  R.entries(formData),
  R.filter(([_, value]) => !isEmpty(value)),
  R.fromEntries
) // => { name: 'Alice', bio: 'Developer' }

See​

isNotEmpty - for the inverse