Merge pull request #218 from 0xProject/bmillman_add_assert

Add assert sub-package

1 files changed, 5 insertions, 77 deletions

diff --git a/packages/0x.js/src/utils/assert.ts b/packages/0x.js/src/utils/assert.ts
index e5c9439f3..4aa83ef17 100644
--- a/packages/0x.js/src/utils/assert.ts
+++ b/packages/0x.js/src/utils/assert.ts
@@ -2,65 +2,23 @@ import * as _ from 'lodash';
 import * as Web3 from 'web3';
 import BigNumber from 'bignumber.js';
 import {SchemaValidator, Schema} from '0x-json-schemas';
+import {assert as sharedAssert} from '@0xproject/assert';
 import {Web3Wrapper} from '../web3_wrapper';
 import {signatureUtils} from '../utils/signature_utils';
 import {ECSignature} from '../types';
 
 const HEX_REGEX = /^0x[0-9A-F]*$/i;
 
-export const assert = {
-    isBigNumber(variableName: string, value: BigNumber): void {
-        const isBigNumber = _.isObject(value) && (value as any).isBigNumber;
-        this.assert(isBigNumber, this.typeAssertionMessage(variableName, 'BigNumber', value));
-    },
-    isValidBaseUnitAmount(variableName: string, value: BigNumber) {
-        assert.isBigNumber(variableName, value);
-        const hasDecimals = value.decimalPlaces() !== 0;
-        this.assert(
-            !hasDecimals, `${variableName} should be in baseUnits (no decimals), found value: ${value.toNumber()}`,
-        );
-    },
+export const assert = _.extend({}, sharedAssert, {
     isValidSignature(orderHash: string, ecSignature: ECSignature, signerAddress: string) {
         const isValidSignature = signatureUtils.isValidSignature(orderHash, ecSignature, signerAddress);
         this.assert(isValidSignature, `Expected order with hash '${orderHash}' to have a valid signature`);
     },
-    isUndefined(value: any, variableName?: string): void {
-        this.assert(_.isUndefined(value), this.typeAssertionMessage(variableName, 'undefined', value));
-    },
-    isString(variableName: string, value: string): void {
-        this.assert(_.isString(value), this.typeAssertionMessage(variableName, 'string', value));
-    },
-    isFunction(variableName: string, value: any): void {
-        this.assert(_.isFunction(value), this.typeAssertionMessage(variableName, 'function', value));
-    },
-    isHexString(variableName: string, value: string): void {
-        this.assert(_.isString(value) && HEX_REGEX.test(value),
-            this.typeAssertionMessage(variableName, 'HexString', value));
-    },
-    isETHAddressHex(variableName: string, value: string): void {
-        const web3 = new Web3();
-        this.assert(web3.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
-        this.assert(
-            web3.isAddress(value) && value.toLowerCase() === value,
-            `Checksummed addresses are not supported. Convert ${variableName} to lower case before passing`,
-        );
-    },
-    doesBelongToStringEnum(variableName: string, value: string,
-                           stringEnum: any /* There is no base type for every string enum */): void {
-        const doesBelongToStringEnum = !_.isUndefined(stringEnum[value]);
-        const enumValues = _.keys(stringEnum);
-        const enumValuesAsStrings = _.map(enumValues, enumValue => `'${enumValue}'`);
-        const enumValuesAsString = enumValuesAsStrings.join(', ');
-        assert.assert(
-            doesBelongToStringEnum,
-            `Expected ${variableName} to be one of: ${enumValuesAsString}, encountered: ${value}`,
-        );
-    },
     async isSenderAddressAsync(variableName: string, senderAddressHex: string,
                                web3Wrapper: Web3Wrapper): Promise<void> {
-        assert.isETHAddressHex(variableName, senderAddressHex);
+        sharedAssert.isETHAddressHex(variableName, senderAddressHex);
         const isSenderAddressAvailable = await web3Wrapper.isSenderAddressAvailableAsync(senderAddressHex);
-        assert.assert(isSenderAddressAvailable,
+        sharedAssert.assert(isSenderAddressAvailable,
             `Specified ${variableName} ${senderAddressHex} isn't available through the supplied web3 provider`,
         );
     },
@@ -68,34 +26,4 @@ export const assert = {
         const availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
         this.assert(!_.isEmpty(availableAddresses), 'No addresses were available on the provided web3 provider');
     },
-    hasAtMostOneUniqueValue(value: any[], errMsg: string): void {
-        this.assert(_.uniq(value).length <= 1, errMsg);
-    },
-    isNumber(variableName: string, value: number): void {
-        this.assert(_.isFinite(value), this.typeAssertionMessage(variableName, 'number', value));
-    },
-    isBoolean(variableName: string, value: boolean): void {
-        this.assert(_.isBoolean(value), this.typeAssertionMessage(variableName, 'boolean', value));
-    },
-    isWeb3Provider(variableName: string, value: Web3.Provider): void {
-        const isWeb3Provider = _.isFunction((value as any).send) || _.isFunction((value as any).sendAsync);
-        this.assert(isWeb3Provider, this.typeAssertionMessage(variableName, 'Web3.Provider', value));
-    },
-    doesConformToSchema(variableName: string, value: any, schema: Schema): void {
-        const schemaValidator = new SchemaValidator();
-        const validationResult = schemaValidator.validate(value, schema);
-        const hasValidationErrors = validationResult.errors.length > 0;
-        const msg = `Expected ${variableName} to conform to schema ${schema.id}
-Encountered: ${JSON.stringify(value, null, '\t')}
-Validation errors: ${validationResult.errors.join(', ')}`;
-        this.assert(!hasValidationErrors, msg);
-    },
-    assert(condition: boolean, message: string): void {
-        if (!condition) {
-            throw new Error(message);
-        }
-    },
-    typeAssertionMessage(variableName: string, type: string, value: any): string {
-        return `Expected ${variableName} to be of type ${type}, encountered: ${value}`;
-    },
-};
+});