funcunit/site/node_modules/transpile/lib/traverse.js

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var traverse;

module.exports = traverse = function(object, visitor) {
    var key, child;

    if (visitor.call(null, object) === false) {
        return;
    }
    for (key in object) {
        if (object.hasOwnProperty(key)) {
            child = object[key];
            if (typeof child === 'object' && child !== null) {
                traverse(child, visitor);
            }
        }
    }
};