Function argumentsToChain

lib/server.js:1638–1664

* Verify and flatten a nested array of request handlers. * * @private * @function argumentsToChain * @throws {TypeError} * @param {Function[]} handlers - pass through of funcs from server.[method] * @returns {Array} request handlers

(handlers)

 * @returns  {Array} request handlers
 */
function argumentsToChain(handlers) {
    assert.array(handlers, 'handlers');

    var chain = [];

    // A recursive function for unwinding a nested array of handlers into a
    // single chain.
    function process(array) {
        for (var i = 0; i < array.length; i++) {
            if (Array.isArray(array[i])) {
                // Recursively call on nested arrays
                process(array[i]);
                continue;
            }
            // If an element of the array isn't an array, ensure it is a
            // handler function and then push it onto the chain of handlers
            assert.func(array[i], 'handler');
            chain.push(array[i]);
        }

        return chain;
    }

    // Return the chain, note that if `handlers` is an empty array, this will
    // return an empty array.
    return process(handlers);
}

/**
 * merge optional formatters with the default formatters to create a single