refactor(runtime): move performance API to timers extension (#10818)

Co-authored-by: Luca Casonato <hello@lcas.dev>

1 files changed, 0 insertions, 60 deletions

diff --git a/runtime/js/01_web_util.js b/runtime/js/01_web_util.js
index 5960691eb..11294a9bb 100644
--- a/runtime/js/01_web_util.js
+++ b/runtime/js/01_web_util.js
@@ -17,65 +17,6 @@
     }
   }
 
-  const objectCloneMemo = new WeakMap();
-
-  function cloneArrayBuffer(
-    srcBuffer,
-    srcByteOffset,
-    srcLength,
-    _cloneConstructor,
-  ) {
-    // this function fudges the return type but SharedArrayBuffer is disabled for a while anyway
-    return srcBuffer.slice(
-      srcByteOffset,
-      srcByteOffset + srcLength,
-    );
-  }
-
-  /** Clone a value in a similar way to structured cloning.  It is similar to a
- * StructureDeserialize(StructuredSerialize(...)). */
-  function cloneValue(value) {
-    // Performance optimization for buffers, otherwise
-    // `serialize/deserialize` will allocate new buffer.
-    if (value instanceof ArrayBuffer) {
-      const cloned = cloneArrayBuffer(
-        value,
-        0,
-        value.byteLength,
-        ArrayBuffer,
-      );
-      objectCloneMemo.set(value, cloned);
-      return cloned;
-    }
-    if (ArrayBuffer.isView(value)) {
-      const clonedBuffer = cloneValue(value.buffer);
-      // Use DataViewConstructor type purely for type-checking, can be a
-      // DataView or TypedArray.  They use the same constructor signature,
-      // only DataView has a length in bytes and TypedArrays use a length in
-      // terms of elements, so we adjust for that.
-      let length;
-      if (value instanceof DataView) {
-        length = value.byteLength;
-      } else {
-        length = value.length;
-      }
-      return new (value.constructor)(
-        clonedBuffer,
-        value.byteOffset,
-        length,
-      );
-    }
-
-    try {
-      return Deno.core.deserialize(Deno.core.serialize(value));
-    } catch (e) {
-      if (e instanceof TypeError) {
-        throw new DOMException("Uncloneable value", "DataCloneError");
-      }
-      throw e;
-    }
-  }
-
   const handlerSymbol = Symbol("eventHandlers");
   function makeWrappedHandler(handler) {
     function wrappedHandler(...args) {
@@ -114,6 +55,5 @@
     illegalConstructorKey,
     requiredArguments,
     defineEventHandler,
-    cloneValue,
   };
 })(this);