diff --git a/js/ringbuf.js b/js/ringbuf.js
index 67171b8..851f9cb 100644
--- a/js/ringbuf.js
+++ b/js/ringbuf.js
@@ -344,6 +344,19 @@ export class RingBuffer {
* @private
*/
_copy(input, offset_input, output, offset_output, size) {
+ if (!size) {
+ return;
+ }
+ // Fast-path: use `set(...)` if possible: copying all the input linearly to
+ // the output.
+ if (
+ offset_input === 0 &&
+ offset_output + input.length <= this._storage_capacity() &&
+ input.length === size
+ ) {
+ output.set(input, offset_output);
+ return;
+ }
for (let i = 0; i < size; i++) {
output[offset_output + i] = input[offset_input + i];
}
diff --git a/public/example/index.js b/public/example/index.js
index 292397c..c34663a 100644
--- a/public/example/index.js
+++ b/public/example/index.js
@@ -596,6 +596,19 @@ class RingBuffer {
* @private
*/
_copy(input, offset_input, output, offset_output, size) {
+ if (!size) {
+ return;
+ }
+ // Fast-path: use `set(...)` if possible: copying all the input linearly to
+ // the output.
+ if (
+ offset_input === 0 &&
+ offset_output + input.length <= this._storage_capacity() &&
+ input.length === size
+ ) {
+ output.set(input, offset_output);
+ return;
+ }
for (let i = 0; i < size; i++) {
output[offset_output + i] = input[offset_input + i];
}
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