1. Create package.json
npm init -y
2. Install the required packages
npm install -D @babel/core @babel/cli @babel/preset-env
3. Create a file in the root directory .babelrc
document content
{
"presets":["@babel/preset-env"]
}
4. Create a src directory created js file
5. Run command to compile the src js file transcoding to as: lib directory
运行:.\node_modules\.lib\babel src --out-dir lib
[email protected] available npx babel
Run: npx babel src --out-dir lib