{ "presets": [ ["@babel/env", { "modules": false }], "@babel/typescript" ], "plugins": [ "@babel/proposal-class-properties", "@babel/proposal-object-rest-spread", "@babel/plugin-transform-runtime", ["module-resolver", { "alias": { "~": "./src" } }] ], "env": { "test": { "plugins": ["transform-es2015-modules-commonjs"] } } }