Expand has checks (#1271)

packages/util-crypto/src/cryptoInit.ts

@@ -1,8 +1,15 @@
 // Copyright 2017-2021 @polkadot/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+// import { xglobal } from '@polkadot/x-global';
+
 import { cryptoWaitReady } from './crypto';
 
+// This would not be a great idea since it would poluse the global namespace
+// if (typeof BigInt !== 'function' || typeof BigInt.asIntN !== 'function') {
+//   (xglobal as Record<string, unknown>).BigInt = () => Number.NaN;
+// }
+
 // start init process immediately
 cryptoWaitReady().catch((): void => {
   // shouldn't happen, logged above

packages/util/src/bi/consts.ts

@@ -6,7 +6,7 @@
  * @description Creates a new instance of BigInt in environments that do support it
  */
 export function _n (n: string | number | bigint | boolean): bigint {
-  return typeof BigInt === 'function'
+  return typeof BigInt === 'function' && typeof BigInt.asIntN === 'function'
     ? BigInt(n)
     : Number.NaN as unknown as bigint;
 }

packages/util/src/has.ts

@@ -1,7 +1,7 @@
 // Copyright 2017-2021 @polkadot/util authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-export const hasBigInt = typeof BigInt !== 'undefined';
+export const hasBigInt = typeof BigInt === 'function' && typeof BigInt.asIntN === 'function';
 export const hasBuffer = typeof Buffer !== 'undefined';
 export const hasDirname = typeof __dirname !== 'undefined';
 export const hasProcess = typeof process === 'object';

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

@@ -7,7 +7,7 @@ export type TypedArray = Int8Array | Uint8ClampedArray | Uint8Array |
 
 // helper to protect against older bundlers
 export function _n (n: string | number | bigint | boolean): bigint {
-  return typeof BigInt === 'function'
+  return typeof BigInt === 'function' && typeof BigInt.asIntN === 'function'
     ? BigInt(n)
     : Number.NaN as unknown as bigint;
 }