/
promises.mjs
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/
promises.mjs
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
import { isIterable, isNodeStream } from "../internal/streams/utils.mjs";
import { pipelineImpl as pl } from "../internal/streams/pipeline.mjs";
import eos from "../internal/streams/end-of-stream.mjs";
function pipeline(...streams) {
return new Promise((resolve, reject) => {
let signal;
let end;
const lastArg = streams[streams.length - 1];
if (
lastArg && typeof lastArg === "object" &&
!isNodeStream(lastArg) && !isIterable(lastArg)
) {
const options = streams.pop();
signal = options.signal;
end = options.end;
}
pl(streams, (err, value) => {
if (err) {
reject(err);
} else {
resolve(value);
}
}, { signal, end });
});
}
function finished(stream, opts) {
return new Promise((resolve, reject) => {
eos(stream, opts, (err) => {
if (err) {
reject(err);
} else {
resolve();
}
});
});
}
export default {
finished,
pipeline,
};
export { finished, pipeline };