default-args.js

GreyhoundReader.prototype.readIndexed = function(sessionId, bbox, schema, depthBegin, depthEnd, cb) {
    var options = {
        schema: (schema || Schema.standard()),
    };

    if (typeof(bbox) === 'function') {
        cb = bbox;
        bbox = schema = depthBegin = depthEnd = null;
    }

    if (typeof(schema) === 'function') {
        cb = schema;
        schema = depthBegin = depthEnd = null;
    }

    if (typeof(depthBegin) === 'function') {
        cb = depthBegin;
        depthBegin = depthEnd = null;
    }

    if (typeof(depthEnd) === 'function') {
        cb = depthEnd;
        depthEnd = null;
    }
    // ...
});