网上找了很多方法，装了插件还是不行babel-plugin-transform-runtime babel-runtime
.babelrc如下

{
    "presets": ["es2015","stage-3"],
    "plugins": [[
        "transform-runtime",
        {
          "helpers": false,
          "polyfill": false,
          "regenerator": true,
          "moduleName": "babel-runtime"
        }
      ]]
}

这是开发依赖

"devDependencies": {
    "babel-core": "^6.26.3",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-polyfill": "^6.26.0",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-latest": "^6.24.1",
    "babel-preset-stage-3": "^6.24.1",
    "del": "^3.0.0",
    "eslint": "^4.11.0",
    "express": "^4.16.2",
    "gulp": "^3.9.1",
    "gulp-autoprefixer": "^4.0.0",
    "gulp-awaitable-tasks": "^1.0.0",
    "gulp-babel": "^7.0.1",
    "gulp-changed": "^3.2.0",
    "gulp-concat": "^2.6.1",
    "gulp-eslint": "^4.0.0",
    "gulp-if": "^2.0.2",
    "gulp-less": "^3.3.2",
    "gulp-minify-css": "^1.2.4",
    "gulp-sourcemaps": "^2.6.1",
    "gulp-uglify": "^3.0.0",
    "gulp.spritesmith": "^6.7.0",
    "http-proxy-middleware": "^0.17.4",
    "opn": "^5.1.0",
    "through2": "^2.0.3",
    "babel-runtime": "^6.26.0"
  },