Apply batch 4 lint decisions and deno fmt settings

src/processes/child.ts

@@ -23,7 +23,10 @@ export function exitCode(child: ChildProcess): Promise<number> {
 }
 
 // Writes a chunk, waiting for the stream to drain when its buffer is full.
-export async function echo(stream: Writable, chunk: string | Uint8Array): Promise<void> {
+export async function echo(
+  stream: Writable,
+  chunk: string | Uint8Array,
+): Promise<void> {
   if (!stream.write(chunk)) {
     await once(stream, "drain");
   }