Drop del-cli dependency (#10652)

package.json

@@ -86,7 +86,6 @@
   "devDependencies": {
     "@inquirer/prompts": "4.3.0",
     "chalk": "5.3.0",
-    "del-cli": "5.1.0",
     "editorconfig-checker": "5.1.5",
     "esbuild": "0.19.4",
     "fake-diff": "1.0.0",
@@ -108,7 +107,7 @@
   },
   "scripts": {
     "build": "node scripts/build/package.js",
-    "clean": "del-cli index.js index.mjs index.d.ts sdk.js",
+    "clean": "node scripts/build/clean.js",
     "format": "prettier --cache --write .",
     "lint": "npm run ourlint && npm run jslint && npm run jsonlint && npm run svglint && npm run wslint",
     "ourlint": "node scripts/lint/ourlint.js",

scripts/build/clean.js

@@ -0,0 +1,29 @@
+/**
+ * @fileoverview
+ * Clean files built by the build process.
+ */
+
+import fs from 'node:fs';
+import path from 'node:path';
+import { getDirnameFromImportMeta } from '../../sdk.mjs';
+
+const __dirname = getDirnameFromImportMeta(import.meta.url);
+const rootDirectory = path.resolve(__dirname, '..', '..');
+const files = ['index.js', 'index.mjs', 'index.d.ts', 'sdk.js'];
+
+const fileExists = (fpath) =>
+  new Promise((r) => fs.access(fpath, fs.constants.F_OK, (e) => r(!e)));
+
+Promise.all(
+  files.map(async (file) => {
+    const filepath = path.join(rootDirectory, file);
+    if (!(await fileExists(filepath))) {
+      console.error(`File ${file} does not exist, skipping...`);
+      return;
+    }
+    return fs.promises.unlink(filepath);
+  }),
+).catch((error) => {
+  console.error(`Error cleaning files: ${error.message}`);
+  process.exit(1);
+});