Function traverse

Type declaration

• • <S>(visitor): {
        [Type in Exclude<Node, t.DeprecatedAliases>["type"]]?: VisitNodeObject<S, Extract<Node, {
            type: Type;
        }>>
    }

  • explode() will take a Visitor object with all of the various shorthands that we support, and validates & normalizes it into a common format, ready to be used in traversal.

    The various shorthands are:

    • Identifier() { ... } -> Identifier: { enter() { ... } }
    • "Identifier|NumericLiteral": { ... } -> Identifier: { ... }, NumericLiteral: { ... }
    • Aliases in @babel/types: e.g. Property: { ... } -> ObjectProperty: { ... }, ClassProperty: { ... }

    Other normalizations are:

    • Visitors of virtual types are wrapped, so that they are only visited when their dynamic check passes
    • enter and exit functions are wrapped in arrays, to ease merging of visitors

    Type Parameters

    • S = unknown

    Parameters

    • visitor: Visitor<S>

    Returns {
        [Type in Exclude<Node, t.DeprecatedAliases>["type"]]?: VisitNodeObject<S, Extract<Node, {
            type: Type;
        }>>
    }