执行npm start启动React项目时遇nodenv版本未安装错误

No worries, this is a super common nodenv hiccup—let’s get your React project up and running in just a few steps:

• Install the required Node.js version first
  Your project’s .node-version file is telling nodenv to use Node 8.9.1, which isn’t on your system yet. Run this command in your terminal:

  nodenv install 8.9.1
  

  If you hit a compilation error (pretty common on macOS), make sure you have Xcode Command Line Tools installed first:

  xcode-select --install
  

  Follow the on-screen prompts to finish installing, then rerun the nodenv install command.

• Update nodenv’s shims
  Once the version is installed, you need to let nodenv know it’s available. Run this to refresh its reference list:

  nodenv rehash
  

• Confirm the correct version is active
  Head back to your React project directory and check the Node version with:

  node --version
  

  You should see v8.9.1 printed out. Now go ahead and run npm start—your project should launch without that nodenv error.

Quick (But Not Recommended) Alternative #

If you really don’t want to use Node 8.9.1, you can edit the .node-version file in your project root and replace 8.9.1 with a Node version you already have installed. Just keep in mind: the project was likely configured for 8.9.1, so this might lead to unexpected bugs later on.

内容的提问来源于stack exchange，提问作者Ishan Patel