some flowconfig

.flowconfig

[version]
0.30.0

[ignore]
.*/.git/.*
.*/node_modules/.*
.*/.nyc_output/.*
.*/__tests__/.*
.*/dist/.*

[libs]
flow/interfaces

[options]
suppress_comment= \\(.\\|\n\\)*\\$FlowFixMe

esproposal.class_instance_fields=enable
esproposal.class_static_fields=enable

# extensions, should be keep in sync with webpack.config.js
# react-native(-web) extensions
module.file_ext=.web.js
# before adding .ios and .android, we will need to run flow with all extensions
# https://github.com/facebook/flow/issues/945#issuecomment-228340395
# module.file_ext=.ios.js
# module.file_ext=.android.js
# normal node extension
module.file_ext=.js
module.file_ext=.json
module.file_ext=

# babel-plugin-relative-import
module.name_mapper='^~/\(.*\)' -> '<PROJECT_ROOT>/src/\1'

# webpack loaders
module.name_mapper='.*\.\(svg\|png\|jpg\|gif\)$' -> '<PROJECT_ROOT>/flow/stub/url-loader.js'

flow--stub--url-loader.js

// @flow
const s: string = ""
export default s