Type-Checking

  • Facebook Open-Sources JavaScript Static-Type Checker Flow

    … in JavaScript. Flow adds minimal compile-time overhead, as it does all its work proactively in the background. And Flow does not force you to change how you code — it performs sophisticated program analysis to work with the idioms you already know and love. Flow’s type-checking is opt-in — you do not need to type-check all your code at once. However…

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