cli: sort files

cli/utils.mjs

@@ -0,0 +1,17 @@
+import { promises as fsp } from 'node:fs'
+
+export async function sortFile(path) {
+  const file = await fsp.readFile(path, 'utf-8')
+
+  const lines = file.trim().split('\n').sort()
+
+  await fsp.writeFile(path, lines.join('\n') + '\n')
+}
+
+export async function appendFile(path, content) {
+  const file = await fsp.readFile(path, 'utf-8')
+
+  if (!file.includes(content)) {
+    await fsp.writeFile(path, file.trim() + '\n' + content + '\n')
+  }
+}