Initial commit

node_modules/execa/lib/stdio/handle-async.js

@@ -0,0 +1,52 @@
+import {createReadStream, createWriteStream} from 'node:fs';
+import {Buffer} from 'node:buffer';
+import {Readable, Writable, Duplex} from 'node:stream';
+import {generatorToStream} from '../transform/generator.js';
+import {handleStdio} from './handle.js';
+import {TYPE_TO_MESSAGE} from './type.js';
+
+// Handle `input`, `inputFile`, `stdin`, `stdout` and `stderr` options, before spawning, in async mode
+export const handleStdioAsync = (options, verboseInfo) => handleStdio(addPropertiesAsync, options, verboseInfo, false);
+
+const forbiddenIfAsync = ({type, optionName}) => {
+	throw new TypeError(`The \`${optionName}\` option cannot be ${TYPE_TO_MESSAGE[type]}.`);
+};
+
+// Create streams used internally for piping when using specific values for the `std*` options, in async mode.
+// For example, `stdout: {file}` creates a file stream, which is piped from/to.
+const addProperties = {
+	fileNumber: forbiddenIfAsync,
+	generator: generatorToStream,
+	asyncGenerator: generatorToStream,
+	nodeStream: ({value}) => ({stream: value}),
+	webTransform({value: {transform, writableObjectMode, readableObjectMode}}) {
+		const objectMode = writableObjectMode || readableObjectMode;
+		const stream = Duplex.fromWeb(transform, {objectMode});
+		return {stream};
+	},
+	duplex: ({value: {transform}}) => ({stream: transform}),
+	native() {},
+};
+
+const addPropertiesAsync = {
+	input: {
+		...addProperties,
+		fileUrl: ({value}) => ({stream: createReadStream(value)}),
+		filePath: ({value: {file}}) => ({stream: createReadStream(file)}),
+		webStream: ({value}) => ({stream: Readable.fromWeb(value)}),
+		iterable: ({value}) => ({stream: Readable.from(value)}),
+		asyncIterable: ({value}) => ({stream: Readable.from(value)}),
+		string: ({value}) => ({stream: Readable.from(value)}),
+		uint8Array: ({value}) => ({stream: Readable.from(Buffer.from(value))}),
+	},
+	output: {
+		...addProperties,
+		fileUrl: ({value}) => ({stream: createWriteStream(value)}),
+		filePath: ({value: {file, append}}) => ({stream: createWriteStream(file, append ? {flags: 'a'} : {})}),
+		webStream: ({value}) => ({stream: Writable.fromWeb(value)}),
+		iterable: forbiddenIfAsync,
+		asyncIterable: forbiddenIfAsync,
+		string: forbiddenIfAsync,
+		uint8Array: forbiddenIfAsync,
+	},
+};