Flycheck checker for Flow
Yesterday Facebook open sourced Flow, a static type checker for Javascript. If you use Emacs, you can use Flycheck to check your .js files on the fly using Flow.
Here is the checker definition I use:
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| (flycheck-define-checker javascript-flow | |
| "A JavaScript syntax and style checker using Flow. | |
| See URL `http://flowtype.org/'." | |
| :command ("flow" source-original) | |
| :error-patterns | |
| ((error line-start | |
| (file-name) | |
| ":" | |
| line | |
| ":" | |
| (minimal-match (one-or-more not-newline)) | |
| ": " | |
| (message (minimal-match (and (one-or-more anything) "\n"))) | |
| line-end)) | |
| :modes js-mode) |
I prefer to use Flow after gjslint, so I define the following, too:
(flycheck-add-next-checker 'javascript-gjslint 'javascript-flow)
Enjoy!