effect-io-ai

Package: effect
Module: SchemaAST

SchemaAST.isNull

Narrows an AST to Null.

When to use

Use to recognize an AST node that represents exactly the null literal when inspecting, traversing, or transforming schema ASTs.

See

• Null for the AST node type narrowed by this guard
• null for the singleton Null AST instance
• isLiteral for exact primitive literal AST nodes

Signature

declare const isNull: (ast: AST) => ast is Null

Source

Since v4.0.0