Fix extension build script now that it is async

Author: GarboMuffin

scripts/prepare-extensions.mjs

@@ -1,12 +1,13 @@
-import * as pathUtil from 'node:path';
+import pathUtil from 'node:path';
+import fs from 'node:fs';
+import fsPromises from 'node:fs/promises';
 import { promisify } from 'node:util';
-import * as fs from 'node:fs';
-import * as zlib from 'node:zlib';
+import zlib from 'node:zlib';
 import Builder from '@turbowarp/extensions/builder';
 
 const mode = 'desktop';
 const builder = new Builder(mode);
-const build = builder.build();
+const build = await builder.build();
 console.log(`Built extensions (mode: ${mode})`);
 
 const outputDirectory = pathUtil.join(import.meta.dirname, '../dist-extensions/');
@@ -16,22 +17,20 @@ fs.rmSync(outputDirectory, {
 });
 
 const brotliCompress = promisify(zlib.brotliCompress);
-const mkdir = promisify(fs.mkdir);
-const writeFile = promisify(fs.writeFile);
 
 const exportFile = async (relativePath, file) => {
   // This part is unfortunately still synchronous
-  const contents = file.read();
+  const contents = await file.read();
   console.log(`Generated ${relativePath}`);
 
   const compressed = await brotliCompress(contents);
 
   const directoryName = pathUtil.dirname(relativePath);
-  await mkdir(pathUtil.join(outputDirectory, directoryName), {
+  await fsPromises.mkdir(pathUtil.join(outputDirectory, directoryName), {
     recursive: true
   });
 
-  await writeFile(pathUtil.join(outputDirectory, `${relativePath}.br`), compressed)
+  await fsPromises.writeFile(pathUtil.join(outputDirectory, `${relativePath}.br`), compressed)
 
   console.log(`Compressed ${relativePath}`);
 };