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Used when adding new error messages to React, or seeing "unknown error code" warnings.

@facebook250k

Used when feature flag tests fail, flags need updating, understanding @gate pragmas, debugging channel-specific test...

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Used when you need to check feature flag states, compare channels, or debug why a feature behaves differently across...

@facebook248k

Used when you need to run Flow type checking, or when seeing Flow type errors in React code.

@facebook248k

Used when you need to run tests for React core.

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Used when you want to validate changes before committing, or when you need to check all React contribution requirements.

@facebook248k

Used when you have lint errors, formatting issues, or before committing code to ensure it passes CI.

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Best practices for writing idiomatic Relay code.

@facebook19k

Guide users through writing their first Buck2 rule to learn fundamental concepts including rules, actions, targets,...

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