No Title

nvm

What:

nvm as a mechanism for managing node versions

官方文档： https://github.com/nvm-sh/nvm

To switch Node.js from node@4.4.7 to node@8.9.1 i have used following command:

nvm install v8.9.1
nvm use v8.9.1

Problems:

-bash: nvm: command not found

1. Before installing nvm, run this in terminal: touch ~/.bash_profile
2. After, run this in terminal:
   curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.1/install.sh | bash
3. Important… - DO NOT forget to Restart your terminal OR use command source ~/.nvm/nvm.sh (this will refresh the available commands in your system path).
4. In the terminal, use command nvm --version and you should see the version

nvm ls 出错

在终端输入：

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm

Q：不识别es6 中的 … 语法

# 代码举例
const opts = {

      binary: typeof data !== 'string',

      mask: !this._isServer,

      compress: true,

      fin: true,

      ...options

    };

A：安装 babel 转换插件

babel-transform-object-rest-spread

npm install –save-dev babel-cli babel-preset-es2015 babel-preset-es2017

npm install babel-preset-stage-0 --save-dev

npm install @babel/core @babel/register @babel/preset-env --save-dev

资源：

https://stackoverflow.com/questions/16904658/node-version-manager-install-nvm-command-not-found

https://www.cnblogs.com/kengsan/p/6399858.html

https://segmentfault.com/q/1010000012941070