Directives
Canary
These directives are needed only if you’re using React Server Components or building a library compatible with them.
Directives provide instructions to bundlers compatible with React Server Components.
Source code directives
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'use client'lets you mark what code runs on the client. -
'use server'marks server-side functions that can be called from client-side code.
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https://18.react.dev/reference/rsc/directives
