Fix: create parent dir before write

Build/lib/bun.ts

@@ -1,3 +1,7 @@
+import { dirname } from 'path';
+import fs from 'fs';
+import fsp from 'fs/promises';
+
 interface Peek {
   <T = undefined>(promise: T | Promise<T>): Promise<T> | T,
   status<T = undefined>(
@@ -11,3 +15,21 @@ noopPeek.status = () => 'unknown';
 export const peek: Peek = typeof Bun !== 'undefined'
   ? Bun.peek
   : noopPeek as Peek;
+
+interface Write {
+  (
+    destination: string,
+    input: NodeJS.TypedArray | string,
+  ): Promise<unknown>
+}
+
+export const writeFile: Write = typeof Bun !== 'undefined'
+  ? Bun.write
+  : (async (destination: string, input) => {
+    const dir = dirname(destination);
+
+    if (!fs.existsSync(dir)) {
+      await fsp.mkdir(dir, { recursive: true });
+    }
+    return fsp.writeFile(destination, input, { encoding: 'utf-8' });
+  });

Build/lib/create-file.ts

@@ -8,6 +8,7 @@ import fsp from 'fs/promises';
 import { sort } from './timsort';
 import { fastStringArrayJoin } from './misc';
 import { readFileByLine } from './fetch-text-by-line';
+import { writeFile } from './bun';
 
 export async function compareAndWriteFile(span: Span, linesA: string[], filePath: string) {
   let isEqual = true;
@@ -70,7 +71,7 @@ export async function compareAndWriteFile(span: Span, linesA: string[], filePath
 
   await span.traceChildAsync(`writing ${filePath}`, async () => {
     // if (linesALen < 10000) {
-    return fsp.writeFile(filePath, fastStringArrayJoin(linesA, '\n') + '\n');
+    return writeFile(filePath, fastStringArrayJoin(linesA, '\n') + '\n');
     // }
     // const writer = file.writer();