webpack配置babel-loader

需要安装的插件：

cnpm i -D babel-core babel-loader babel-plugin-syntax-jsx babel-plugin-transform-runtime  babel-plugin-transform-vue-jsx babel-preset-env babel-preset-stage-2

直接安装的babel-loader是8.0的需要降到7.0,babel-core6.0需要babel-laoder7.0进行匹配；

.babelrc配置文件：

{
"presets": [
["env", {
"modules": false,
"targets": {
"browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
}
}],
"stage-2"
],
"plugins": ["transform-vue-jsx", "transform-runtime"]

webpack的配置文件中module-rules中加入：

{
test: /\.js$/,
exclude: /(node_modules|bower_components)/,
loader: 'babel-loader'
}