# All files / src/utils has-node.js

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     // @flow
    import type { NodeType } from "../flow/types";

    export default function hasNode(Type: string, ast: NodeType) {
      const test = node => node && node.Type === Type;

      const walker = node => {
        if (node == null) {
          return false;
        }

        return test(node) || node.params.some(walker);
      };

      return walker(ast);
    }