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flow

A static type checker for JavaScript. More information: https://flow.org.

  • Run a flow check:

flow

  • Check which files are being checked by flow:

flow ls

  • Run a type coverage check on all files in a directory:

flow batch-coverage --show-all --strip-root {{path/to/directory}}

  • Display line-by-line type coverage stats:

flow coverage --color {{path/to/file.jsx}}