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node_modules/@11ty/eleventy/src/Util/SpawnAsync.js

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+import { spawn } from "node:child_process";
+import { withResolvers } from "./PromiseUtil.js";
+
+export function spawnAsync(command, args, options) {
+	let { promise, resolve, reject } = withResolvers();
+
+	const cmd = spawn(command, args, options);
+	let res = [];
+	cmd.stdout.on("data", (data) => {
+		res.push(data.toString("utf8"));
+	});
+
+	let err = [];
+	cmd.stderr.on("data", (data) => {
+		err.push(data.toString("utf8"));
+	});
+
+	cmd.on("close", (code) => {
+		if (err.length > 0) {
+			reject(err.join("\n"));
+		} else if (code === 1) {
+			reject("Internal error: process closed with error exit code.");
+		} else {
+			resolve(res.join("\n"));
+		}
+	});
+
+	return promise;
+}