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astHelpers.findFirst() function

Finds the first node in an AST that matches a partial node

Signature:

export declare function findFirst<M extends Matcher<namedTypes.ASTNode | AST.Node>>(ast: AST.Node | namedTypes.ASTNode, matcher: M): (AST.Node & {
    type: M['type'];
}) | null;

Parameters

Parameter	Type	Description
ast	AST.Node | namedTypes.ASTNode	The node to traverse
matcher	M	Partial object to match against

**Returns:**

(AST.Node & { type: M['type']; }) | null

The first matching node, or null if no matching node was found