{ "presets": [ [ "env", { "targets": { "browsers": [ "> 1%", "last 2 versions", "not ie <= 8" ] } } ], "stage-2" ], "plugins": [ "transform-vue-jsx", "transform-runtime" ], "env": { "test": { "presets": [ "env", "stage-2" ], "plugins": [ "transform-vue-jsx", "transform-es2015-modules-commonjs", "dynamic-import-node" ] } } }