Drop unused BigInt class extension (#1210)

packages/util/src/bi/class.spec.ts

@@ -1,69 +0,0 @@
-// Copyright 2017-2021 @polkadot/util authors & contributors
-// SPDX-License-Identifier: Apache-2.0
-
-import { isBigInt } from '../is';
-import { BigIntClass } from '.';
-
-describe('BigIntClass', (): void => {
-  it('has the correct valueOf', (): void => {
-    expect(
-      typeof new BigIntClass(0).valueOf()
-    ).toEqual('bigint');
-  });
-
-  it('has the correct instanceof', (): void => {
-    expect(
-      isBigInt(new BigIntClass(0))
-    ).toEqual(true);
-  });
-
-  it('has a top-level toString method', (): void => {
-    const test = new BigIntClass(16);
-
-    expect(test.toString()).toEqual('16');
-    expect(test.toString(16)).toEqual('10');
-  });
-
-  it('cane be added together', (): void => {
-    expect(new BigIntClass(16) + new BigIntClass(10)).toEqual(26n);
-  });
-
-  it('has the correct type for inherited', (): void => {
-    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-    // @ts-ignore
-    class Test extends BigIntClass implements BigInt {
-    }
-
-    expect(isBigInt(new Test(0x16))).toEqual(true);
-  });
-
-  it('inhertited class has own methods', (): void => {
-    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-    // @ts-ignore
-    class Test extends BigIntClass {
-      toHex (): string {
-        return `0x${(this as unknown as bigint).toString(16)}`;
-      }
-    }
-
-    expect(new Test(0x16).toHex()).toEqual('0x16');
-  });
-
-  it('inhertited class still acts like bigint', (): void => {
-    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-    // @ts-ignore
-    class Test extends BigIntClass {
-      // nothing
-    }
-
-    const test = new Test(0x16n);
-
-    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-    // @ts-ignore
-    expect(test.toString(16)).toEqual('16');
-
-    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-    // @ts-ignore
-    expect(test * 2n).toEqual(44n);
-  });
-});

packages/util/src/bi/class.ts

@@ -1,22 +0,0 @@
-// Copyright 2017-2021 @polkadot/util authors & contributors
-// SPDX-License-Identifier: Apache-2.0
-
-import type { IBigIntConstructor } from '../types';
-
-// See https://stackoverflow.com/questions/58207487/extend-object-wrappers-for-modern-primitives
-
-// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-// @ts-ignore
-export class BigIntImpl extends BigInt implements BigInt {
-  // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-  // @ts-ignore
-  constructor (value: string | number | bigint | boolean): bigint {
-    const self = Object(BigInt(value)) as bigint;
-
-    Object.setPrototypeOf(self, new.target.prototype);
-
-    return self;
-  }
-}
-
-export const BigIntClass = BigIntImpl as IBigIntConstructor;

packages/util/src/bi/index.ts

@@ -7,7 +7,6 @@
 
 export * from './consts';
 
-export { BigIntClass } from './class';
 export { biSqrt } from './sqrt';
 export { biToBigInt } from './toBigInt';
 export { biMax } from './max';