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@babel/core: A fundamental package to run any babel setup/configuration.
@babel/cli:A built-in CLI which can be used to compile files from the command line/terminal.
@babel/node:is a CLI that works the same as the Node.js CLI, with the added benefit of compiling with Babel presets and plugins before running it.
@babel/preset-env(dev): is a smart preset that allows you to use the latest JavaScript .
@babel/plugin-transform-runtime(dev):A plugin that enables the re-use of Babel's injected helper code to save on code size.
@babel/runtime(save): a package to be installed production dependency to avoid duplication across your compiled output.
// yarn add
@babel/node @babel/preset-env @babel/plugin-transform-runtime @babel/runtime
// .babelrc
{
"presets": ["@babel/preset-env"],
"plugins": [
["@babel/plugin-transform-runtime"]
]
}
// package.json
"scripts": {
"start": "npm run build && node ./build/src/server.js",
"dev": "nodemon --exec babel-node ./src/server.js",
"clean": "rm -rf build && mkdir build",
"build-babel": "babel ./src -d ./build/src",
"build": "npm run clean && npm run build-babel"
}
minh chiu