Function compact

compact<T>(): TransformStream<T, NonNullable<T>>

Remove null and undefined values from a stream

Type Parameters

T

Returns TransformStream<T, NonNullable<T>>

A TransformStream that filters out null and undefined values

Example

const readable = new ReadableStream({
  start(controller) {
    const items = [1, null, 2, undefined, 3]
    items.forEach(item => {
      controller.enqueue(item)
    })
  }
})
const stream = readable.pipeThrough(compact());
// If readable emits [1, null, 2, undefined, 3], the result will be [1, 2, 3]