editor/source/braft-editor/.babelrc

{
  "presets": [
    [
      "@babel/env", {
        "targets": {
          "browsers": [
            "last 2 versions",
            "not IE <= 10"
          ]
        },
        "modules": false
      }
    ],
    "@babel/react"
  ],
  "plugins": [
    "@babel/transform-runtime",
    "@babel/proposal-class-properties"
  ]
}