Fix rename

Author: gitzhou

test/compilerWrapper.test.ts

@@ -8,7 +8,7 @@ import { writeFileSync, readFileSync, mkdtempSync, copyFileSync } from 'fs';
 import { join } from 'path';
 import { buildContractClass } from '../src/contract';
 import { findCompiler } from '../src/findCompiler';
-import { Ripemd160, PubKey, toHex, Sig, ContractArtifact } from '../src';
+import { Ripemd160, PubKey, toHex, Sig, Artifact } from '../src';
 
 describe('compile()', () => {
   it('compile successfully', () => {
@@ -107,7 +107,7 @@ describe('compile()', () => {
 
 
   describe('artifact should be as expected', () => {
-    let artifact: ContractArtifact;
+    let artifact: Artifact;
     before(() => {
       artifact = loadArtifact('tokenUtxo.json');
     });

test/helper.ts

@@ -1,8 +1,8 @@
 import { join } from 'path';
 import { readFileSync, existsSync } from 'fs';
 import { bsv } from '../src/utils';
-import { ContractArtifact } from '../src/contract';
-export function loadArtifact(fileName: string): ContractArtifact {
+import { Artifact } from '../src/contract';
+export function loadArtifact(fileName: string): Artifact {
   return JSON.parse(readFileSync(join(__dirname, "../out/", fileName)).toString());
 }