node-gyp rebuild failed windows 10
npm install –global windows-build-tools https://www.npmjs.com/package/windows-build-tools https://stackoverflow.com/questions/32457761/how-to-solve-node-gyp-rebuild-issue-on-windows-10
Nodejs
truffle truffle-hdwallet-provider Error: Error: the tx doesn't have the correct nonce. account has nonce of: 3 tx has nonce of: 2
What this Error？ Example： transaction A get nonce 1 transaction B get nonce 2 transaction C get nonce 3 But blockchain package B、C first, then package A. If happen this step, get error. With truffle？ Because Normal const wallet = new HDWalletProvider(mnemonic, url, id); const AContract = new TruffleContract(Json_contract); AContract.setProvider(wallet); wallet.addresses[] AContract. use contract api Sometime you call contract “set/write” api two times. Example： Create contract first. Write data into contract second. This two step are in one function. This mean is you call two time “new HDWalletProvide”. Usually you think “New“ two time is ok, get “new” instance. But ...
[轉]2018 年了，你还是只会 npm install 吗？
https://juejin.im/post/5ab3f77df265da2392364341 本地模块引用 這段不錯
supertest jest
Jest Expect Methods https://jestjs.io/docs/en/expect it = test it('count > 30', async () => { await reqTarget.get("/members").expect(200) .then((res) => { //Can use foreach, more easy for(key in res.body){ //console.log(res.body\[key\].cou ); if (res.body\[key\].cou > 100) throw new Error("count: "+res.body\[key\].cou +" > 30"); //for vars value check message expect(res.body\[key\].cou ).toBeLessThan(30); } }); });
nodejs version npm problem install & run
You can do： 1. reget git clone 2. npm install 3. remove node_module 4. npm install agin 5. npm audit fix 6. npm start or run Sometime can Run.