Initial commit

node_modules/execa/lib/convert/duplex.js

@@ -0,0 +1,69 @@
+import {Duplex} from 'node:stream';
+import {callbackify} from 'node:util';
+import {BINARY_ENCODINGS} from '../arguments/encoding-option.js';
+import {
+	getSubprocessStdout,
+	getReadableOptions,
+	getReadableMethods,
+	onStdoutFinished,
+	onReadableDestroy,
+} from './readable.js';
+import {
+	getSubprocessStdin,
+	getWritableMethods,
+	onStdinFinished,
+	onWritableDestroy,
+} from './writable.js';
+
+// Create a `Duplex` stream combining both `subprocess.readable()` and `subprocess.writable()`
+export const createDuplex = ({subprocess, concurrentStreams, encoding}, {from, to, binary: binaryOption = true, preserveNewlines = true} = {}) => {
+	const binary = binaryOption || BINARY_ENCODINGS.has(encoding);
+	const {subprocessStdout, waitReadableDestroy} = getSubprocessStdout(subprocess, from, concurrentStreams);
+	const {subprocessStdin, waitWritableFinal, waitWritableDestroy} = getSubprocessStdin(subprocess, to, concurrentStreams);
+	const {readableEncoding, readableObjectMode, readableHighWaterMark} = getReadableOptions(subprocessStdout, binary);
+	const {read, onStdoutDataDone} = getReadableMethods({
+		subprocessStdout,
+		subprocess,
+		binary,
+		encoding,
+		preserveNewlines,
+	});
+	const duplex = new Duplex({
+		read,
+		...getWritableMethods(subprocessStdin, subprocess, waitWritableFinal),
+		destroy: callbackify(onDuplexDestroy.bind(undefined, {
+			subprocessStdout,
+			subprocessStdin,
+			subprocess,
+			waitReadableDestroy,
+			waitWritableFinal,
+			waitWritableDestroy,
+		})),
+		readableHighWaterMark,
+		writableHighWaterMark: subprocessStdin.writableHighWaterMark,
+		readableObjectMode,
+		writableObjectMode: subprocessStdin.writableObjectMode,
+		encoding: readableEncoding,
+	});
+	onStdoutFinished({
+		subprocessStdout,
+		onStdoutDataDone,
+		readable: duplex,
+		subprocess,
+		subprocessStdin,
+	});
+	onStdinFinished(subprocessStdin, duplex, subprocessStdout);
+	return duplex;
+};
+
+const onDuplexDestroy = async ({subprocessStdout, subprocessStdin, subprocess, waitReadableDestroy, waitWritableFinal, waitWritableDestroy}, error) => {
+	await Promise.all([
+		onReadableDestroy({subprocessStdout, subprocess, waitReadableDestroy}, error),
+		onWritableDestroy({
+			subprocessStdin,
+			subprocess,
+			waitWritableFinal,
+			waitWritableDestroy,
+		}, error),
+	]);
+};