oxlint.watch.js

import { readdirSync, watch } from "node:fs";
import { join } from "path";
import { spawn } from "child_process";
import { fileURLToPath } from "url";
import { dirname } from "path";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const watchDir = "./";
const debounceDelay = 100;
const watchedFiles = new Set();

function runLinter() {
	const lintProcess = spawn("yarn", ["oxlint", "."], {
		stdio: "inherit",
		env: { ...process.env, FORCE_COLOR: "1" }, // ensures color output
	});

	lintProcess.on("error", (err) => {
		console.error(`Failed to start oxlint: ${err}`);
	});
}

function watchRecursive(dir) {
	for (const entry of readdirSync(dir, { withFileTypes: true })) {
		const fullPath = join(dir, entry.name);
		if (entry.isDirectory()) {
			if (entry.name === "node_modules") continue;
			watchRecursive(fullPath);
		} else if (entry.name.endsWith(".ts")) {
			if (watchedFiles.has(fullPath)) continue;

			watchedFiles.add(fullPath);
			let timeout;
			watch(fullPath, () => {
				clearTimeout(timeout);
				timeout = setTimeout(() => runLinter(fullPath), debounceDelay);
			});
		}
	}
}

watchRecursive(join(__dirname, watchDir));
console.log("Watching for JS file changes...");