BREAKING(io): single-export files (#2975)

denoland · Dec 5, 2022 · 8b8950e · 8b8950e
1 parent 259d5a7
commit 8b8950e
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diff --git a/io/_iotest.ts b/io/_iotest.ts
diff --git a/io/_test_common.ts b/io/_test_common.ts
@@ -0,0 +1,29 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+import type { Reader } from "./types.d.ts";
+
+export const MIN_READ_BUFFER_SIZE = 16;
+export const bufsizes: number[] = [
+  0,
+  MIN_READ_BUFFER_SIZE,
+  23,
+  32,
+  46,
+  64,
+  93,
+  128,
+  1024,
+  4096,
+];
+
+export class BinaryReader implements Reader {
+  index = 0;
+
+  constructor(private bytes: Uint8Array = new Uint8Array(0)) {}
+
+  read(p: Uint8Array): Promise<number | null> {
+    p.set(this.bytes.subarray(this.index, p.byteLength));
+    this.index += p.byteLength;
+    return Promise.resolve(p.byteLength);
+  }
+}