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gulp-flowtype Build Status NPM version Dependency Status Gitter chat

Run Facebook's Flow in your gulp pipeline

gulp-flowtype example


$ npm install --save-dev gulp-flowtype


var react = require('gulp-react');
var flow = require('gulp-flowtype');
gulp.task('typecheck', function() {
  return gulp.src('./*.js')
        all: false,
        weak: false,
        declarations: './declarations',
        killFlow: false,
        beep: true,
        abort: false
    .pipe(react({ stripTypes: true })) // Strip Flow type annotations before compiling 



Type: Boolean Default: false

Typecheck all files, not just @flow.


Type: Boolean Default: false

Typecheck with weak inference, assuming dynamic types by default.


Type: String Default: empty

The path to declared files (interfaces) to third-party libraries


Type: Boolean Default: false

Kills the Flow server after Typecheck is finished.


Type: Boolean Default: true

Notify your command prompt of a Typecheck error with a beep


Type: Boolean Default: false

Abort the gulp task after the first Typecheck error


Type: function Default: charliedowler/flow-reporter

Optionally specify a custom reporter.

Release History

  • 2016-08-04 v1.0.0 [Improvement] Update dependencies + Add support for new flow format
  • 2016-01-18 v0.4.9 [Improvement] Update dependencies + fix broken code #38
  • 2015-09-13 v0.4.8 [Fix] Downgrade flow
  • 2015-05-05 v0.4.7 [Improvement] Add option for custom reporter
  • 2015-04-10 v0.4.6 [Fix] Move flow-bin to peerDependencies + #25 Fix abort option
  • 2015-02-24 v0.4.5 [Bump] flow-bin v0.4.0
  • 2015-02-15 v0.4.4 [Fix] #19 Reset passed value when finished
  • 2015-02-07 v0.4.3 [Fix] Move dependency from devDependencies to dependencies
  • 2015-02-06 v0.4.2 [Improvement] Add beep, abort on error and option to override flow executable (broken)
  • 2014-12-15 v0.4.1 [Improvement] Performance improvements & better error handling
  • 2014-11-26 v0.4.0 [Improvement] Tweak success message, check file has /* @flow */ before running flow and added options
  • 2014-11-23 v0.3.1 [Fix] Changes to previous formatting fix
  • 2014-11-23 v0.3.0 [Fix] Repair formatting issues
  • 2014-11-21 v0.2.0 [Improvement] General improvements
  • 2014-11-19 v0.1.0 Initial release


  1. Write test (if applicable)
  2. Write code
  3. Make tests pass
  4. Execute npm run lint and make amendments if needed
  5. Create pull request
  6. Rinse and repeat


MIT © Charlie Dowler