Adjust for anon (#1269)

packages/util/src/bi/consts.ts

@@ -1,15 +1,15 @@
 // Copyright 2017-2021 @polkadot/util authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-type NewBigInt = (value: string | number | bigint | boolean) => bigint;
-
 /**
  * @name _n
  * @description Creates a new instance of BigInt in environments that do support it
  */
-export const _n: NewBigInt = typeof BigInt !== 'undefined'
-  ? (n: string | number | bigint | boolean) => BigInt(n)
-  : () => Number.NaN as unknown as bigint;
+export function _n (n: string | number | bigint | boolean): bigint {
+  return typeof BigInt === 'function'
+    ? BigInt(n)
+    : Number.NaN as unknown as bigint;
+}
 
 /**
  * @name _0n

packages/x-noble-hashes/src/utils.ts

@@ -6,8 +6,11 @@ export type TypedArray = Int8Array | Uint8ClampedArray | Uint8Array |
   Uint16Array | Int16Array | Uint32Array | Int32Array;
 
 // helper to protect against older bundlers
-export const _n: (value: string | number | bigint | boolean) => bigint =
-  typeof BigInt !== 'undefined' ? (n: string | number | bigint | boolean) => BigInt(n) : () => Number.NaN as unknown as bigint;
+export function _n (n: string | number | bigint | boolean): bigint {
+  return typeof BigInt === 'function'
+    ? BigInt(n)
+    : Number.NaN as unknown as bigint;
+}
 
 // Cast array to different type
 export const u8 = (arr: TypedArray) => new Uint8Array(arr.buffer, arr.byteOffset, arr.byteLength);