Function boxInList has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring.

Open

function boxInList(searchedBoxPath, boxes) {
    logger.debug('Test if ' + searchedBoxPath + ' is in ' + boxes);
    for (var boxName in boxes) {
        if (boxes.hasOwnProperty(boxName)) {
            let box = boxes[boxName];

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Function getMessages has 48 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function getMessages(imapConnection, boxName, ids, seqs, options, callback) {
    logger.info('Getting messages by seqs#' + seqs + ' or ids#' + ids + ' in box#' + boxName + ' with options ' + JSON.stringify(options));
    if (ids && seqs || (!ids && !seqs)) { 
        callback(new Error('Either ids or seqs must be defined'), null);
        return;

Function findBoxBySpecialAttribute has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.

Open

function findBoxBySpecialAttribute(boxes, attribute, path) {
    let matchingBoxes = [];
    for (let boxName in boxes) {
        if (boxes.hasOwnProperty(boxName)) {
            let box = boxes[boxName];

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Function exports has 29 lines of code (exceeds 25 allowed). Consider refactoring.

Open

module.exports = function (opts) {
  return function *(next) {
    // request
    var start = new Date;
    logger.debug('  \x1B[90m<-- \x1B[;1m%s\x1B[0;90m %s\x1B[0m', this.method, this.url);

Function createConnection has 28 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function createConnection(username, password) {
    logger.debug('Create connection structure for user#' + username);
    connections[username] = {
        "connection" : createImapConnection(username, password),
        "callbacks" : [],

Function log has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

function log(ctx, start, len, err, event) {
  // get the status code of the response
  var status = err
    ? (err.status || 500)
    : (ctx.status || 404);

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Function exports has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

module.exports = function (opts) {
  return function *(next) {
    // request
    var start = new Date;
    logger.debug('  \x1B[90m<-- \x1B[;1m%s\x1B[0;90m %s\x1B[0m', this.method, this.url);

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Function getMessages has 6 arguments (exceeds 4 allowed). Consider refactoring.

Open

function getMessages(imapConnection, boxName, ids, seqs, options, callback) {

Avoid deeply nested control flow statements.

Open

                    if (boxInList(newSearchedBoxPath, box.children)) {
                        return true;
                    }

Function log has 5 arguments (exceeds 4 allowed). Consider refactoring.

Open

function log(ctx, start, len, err, event) {