{ "presets": [ "@babel/react", ["@babel/env", { "targets": { "chrome": 58, "node": "current" } }] ], "plugins": [ "@babel/plugin-transform-runtime", "@babel/plugin-proposal-export-default-from", "@babel/plugin-proposal-function-bind", "@babel/plugin-proposal-optional-chaining", "@babel/plugin-proposal-nullish-coalescing-operator", ["@babel/plugin-proposal-decorators", { "legacy": true }], ["@babel/plugin-proposal-class-properties", { "loose": true }], ["@babel/plugin-proposal-private-property-in-object", { "loose": true }], ["@babel/plugin-proposal-private-methods", { "loose": true }] ] }