next-safe-action

Use when creating or configuring a next-safe-action client, defining actions with input/output validation, handling server errors, or setting up createSafeActionClient with Standard Schema (Zod, Yup, Valibot)

Use when working with bind arguments, metadata schemas, framework errors (redirect/notFound/forbidden/unauthorized), type inference utilities (InferSafeActionFnInput/Result), or server-level action callbacks

Use when integrating next-safe-action with forms -- react-hook-form adapter (useHookFormAction, useHookFormOptimisticAction, mapToHookFormErrors), native HTML forms, bind arguments, or file uploads

Use when executing next-safe-action actions from React client components -- useAction, useOptimisticAction, handling status/callbacks (onSuccess/onError/onSettled), execute vs executeAsync, or optimistic UI updates

Use when working with validation errors -- returnValidationErrors, formatted vs flattened shapes, custom validation error shapes, throwValidationErrors, or displaying field-level and form-level errors

Use when implementing middleware for next-safe-action -- authentication, authorization, logging, rate limiting, error interception, context extension, or creating standalone reusable middleware with createMiddleware() or createValidatedMiddleware(). Covers both use() (pre-validation) and useValidated() (post-validation) middleware.

Use when writing tests for next-safe-action actions or hooks -- Vitest patterns for testing server actions directly, middleware behavior, hooks with React Testing Library, validation errors, and server errors