For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt, and this page is available as Markdown at /reference/match.md.
Install massaman

    Pattern

    isMatching
    A predicate form of match — returns true/false instead of a value, and narrows types in the truthy branch.
    match
    Exhaustive, type-safe pattern matching for TypeScript.
    NonExhaustiveError
    The runtime error thrown by .exhaustive() when a value reaches it that no pattern matched.
    P
    The pattern primitives namespace.
    Pattern
    The type-level representation of a pattern.