diff --git a/packages/webapi/src/lib/RelativeIndexingMethod.ts b/packages/webapi/src/lib/RelativeIndexingMethod.ts
deleted file mode 100644
index d88349b80e3b..000000000000
--- a/packages/webapi/src/lib/RelativeIndexingMethod.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-type TypedArray =
-	| Int8Array
-	| Uint8Array
-	| Uint8ClampedArray
-	| Int16Array
-	| Uint16Array
-	| Int32Array
-	| Uint32Array
-	| Float32Array
-	| Float64Array
-	| BigInt64Array
-	| BigUint64Array
-
-export const at = {
-	at<T extends Array<any> | string | TypedArray>(this: T, index: number) {
-		index = Math.trunc(index) || 0
-
-		if (index < 0) index += this.length
-
-		if (index < 0 || index >= this.length) return undefined
-
-		return this[index]
-	},
-}.at
-
-export const initRelativeIndexingMethod = (
-	target: any,
-	exclude: Set<string>
-) => {
-	if (exclude.has('at')) return
-
-	const Classes = []
-
-	if (!exclude.has('TypedArray'))
-		Classes.push(
-			Object.getPrototypeOf(target.Int8Array || globalThis.Int8Array)
-		)
-	if (!exclude.has('Array')) Classes.push(target.Array || globalThis.Array)
-	if (!exclude.has('String')) Classes.push(target.String || globalThis.String)
-
-	for (const Class of Classes) {
-		if (!Class.prototype.at)
-			Object.defineProperty(Class.prototype, 'at', {
-				value: at,
-				writable: true,
-				enumerable: false,
-				configurable: true,
-			})
-	}
-}