1. /* Sourced from 0x.js */
    3. import { assert as sharedAssert } from '@0xproject/assert';
    4. // 我们需要这两个未使用的导入，因为它们实际上被sharedAssert使用，它被注入到这里
    5. // tslint:disable-next-line:no-unused-variable
    6. import { Schema } from '@0xproject/json-schemas';
    7. // tslint:disable-next-line:no-unused-variable
    8. import { BigNumber } from '@0xproject/utils';
    9. import { Web3Wrapper } from '@0xproject/web3-wrapper';
    10. import * as _ from 'lodash';
    12. import { ECSignature } from '../types';
    13. import { signatureUtils } from '../utils/signature_utils';
    15. export const assert = {
    16.     ...sharedAssert,
    17.     isValidSignature(orderHash: string, ecSignature: ECSignature, signerAddress: string) {
    18.         const isValidSignature = signatureUtils.isValidSignature(orderHash, ecSignature, signerAddress);
    19.         this.assert(isValidSignature, `Expected order with hash '${orderHash}' to have a valid signature`);
    20.     },
    21.     async isSenderAddressAsync(
    22.         variableName: string,
    23.         senderAddressHex: string,
    24.         web3Wrapper: Web3Wrapper,
    25.     ): Promise<void> {
    26.         sharedAssert.isETHAddressHex(variableName, senderAddressHex);
    27.         const isSenderAddressAvailable = await web3Wrapper.isSenderAddressAvailableAsync(senderAddressHex);
    28.         sharedAssert.assert(
    29.             isSenderAddressAvailable,
    30.             `Specified ${variableName} ${senderAddressHex} isn't available through the supplied web3 provider`,
    31.         );
    32.     },
    33.     async isUserAddressAvailableAsync(web3Wrapper: Web3Wrapper): Promise<void> {
    34.         const availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
    35.         this.assert(!_.isEmpty(availableAddresses), 'No addresses were available on the provided web3 provider');
    36.     },
    37. };