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document %checks #2

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rattrayalex-stripe opened this issue Jul 19, 2017 · 1 comment

rattrayalex-stripe commented Jul 19, 2017 •

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Very hard to find docs for this feature anywhere 😄

eg

declare function isMap(maybeMap: mixed): boolean %checks(maybeMap instanceof Map);

Owner

saltycrane commented Jul 20, 2017

Agree I couldn't find docs for %checks either. Google gave me these:

https://stackoverflow.com/questions/39456328/how-to-make-flow-understand-dynamic-code-that-uses-lodash-for-runtime-type-check
graphql/graphql-js#695
facebook/flow#2625
facebook/flow#3048

¯_(ツ)_/¯

saltycrane closed this as completed

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