chore: import upstream snapshot with attribution

scripts/dev.mjs

@@ -0,0 +1,102 @@
+#!/usr/bin/env node
+
+/**
+ * This scripts looks at all packages and starts their dev command in parallel, if they have one.
+ */
+
+import { spawn } from "node:child_process";
+import { readdirSync, readFileSync, existsSync } from "node:fs";
+import { join } from "node:path";
+import { colors, log } from "./logger.mjs";
+
+const processes = [];
+
+// Cleanup function
+const cleanup = () => {
+  console.log(`\n\n${colors.yellow}[stop]${colors.reset} Stopping all dev servers...`);
+  processes.forEach((proc) => {
+    try {
+      proc.kill("SIGINT");
+    } catch (error) {
+      // Ignore errors during cleanup
+    }
+  });
+  process.exit(0);
+};
+
+// Handle various termination signals
+process.on("SIGINT", cleanup);
+process.on("SIGTERM", cleanup);
+process.on("exit", cleanup);
+
+// Find all packages with dev scripts
+const findPackagesWithDevScript = () => {
+  const packagesDir = "packages";
+  const packagesWithDev = [];
+
+  if (!existsSync(packagesDir)) {
+    log.error(`Packages directory not found: ${packagesDir}`);
+    return packagesWithDev;
+  }
+
+  const packages = readdirSync(packagesDir, { withFileTypes: true })
+    .filter((dirent) => dirent.isDirectory())
+    .map((dirent) => dirent.name);
+
+  for (const pkg of packages) {
+    const packageJsonPath = join(packagesDir, pkg, "package.json");
+
+    if (existsSync(packageJsonPath)) {
+      try {
+        const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf-8"));
+        if (packageJson.scripts && packageJson.scripts.dev) {
+          packagesWithDev.push({
+            name: pkg,
+            displayName: packageJson.name || pkg,
+          });
+        }
+      } catch (error) {
+        log.error(`Failed to read package.json for ${pkg}: ${error.message}`);
+      }
+    }
+  }
+
+  return packagesWithDev;
+};
+
+log.section("DEV SERVERS");
+log.info("Discovering packages with dev scripts...\n");
+
+const packagesWithDev = findPackagesWithDevScript();
+
+if (packagesWithDev.length === 0) {
+  log.error("No packages found with dev scripts!");
+  process.exit(1);
+}
+
+log.info(`Found ${packagesWithDev.length} package(s) with dev scripts:`);
+packagesWithDev.forEach((pkg) => {
+  log.info(`  - ${pkg.displayName} (${pkg.name})`);
+});
+log.info("\nStarting development servers...\n");
+
+// Start dev server for each package
+packagesWithDev.forEach((pkg) => {
+  const proc = spawn("pnpm", ["--filter", pkg.displayName, "dev"], {
+    stdio: "inherit",
+    shell: true,
+  });
+
+  processes.push(proc);
+
+  // Handle process exits
+  proc.on("exit", (code) => {
+    if (code !== 0 && code !== null) {
+      log.error(`${pkg.displayName} dev server exited with code ${code}`);
+      cleanup();
+    }
+  });
+});
+
+// Keep process alive
+process.stdin.resume();