initial commit

2026-05-13 14:20:41 +00:00
commit 6e178d2012
6022 changed files with 399872 additions and 0 deletions
@@ -0,0 +1,31 @@
+export async function headStream(stream, bytes) {
+    let byteLengthCounter = 0;
+    const chunks = [];
+    const reader = stream.getReader();
+    let isDone = false;
+    while (!isDone) {
+        const { done, value } = await reader.read();
+        if (value) {
+            chunks.push(value);
+            byteLengthCounter += value?.byteLength ?? 0;
+        }
+        if (byteLengthCounter >= bytes) {
+            break;
+        }
+        isDone = done;
+    }
+    reader.releaseLock();
+    const collected = new Uint8Array(Math.min(bytes, byteLengthCounter));
+    let offset = 0;
+    for (const chunk of chunks) {
+        if (chunk.byteLength > collected.byteLength - offset) {
+            collected.set(chunk.subarray(0, collected.byteLength - offset), offset);
+            break;
+        }
+        else {
+            collected.set(chunk, offset);
+        }
+        offset += chunk.length;
+    }
+    return collected;
+}