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23 lines
620 B
23 lines
620 B
import { Writable as WritableStream } from 'readable-stream'
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import promiseToCallback from 'promise-to-callback'
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class AsyncWritableStream extends WritableStream {
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constructor (asyncWriteFn, _opts) {
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const opts = Object.assign({ objectMode: true }, _opts)
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super(opts)
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this._asyncWriteFn = asyncWriteFn
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}
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// write from incomming stream to state
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_write (chunk, encoding, callback) {
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promiseToCallback(this._asyncWriteFn(chunk, encoding))(callback)
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}
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}
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function createStreamSink (asyncWriteFn, _opts) {
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return new AsyncWritableStream(asyncWriteFn, _opts)
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}
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export default createStreamSink
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