Function set has 30 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    set( name, value ) {
        // If the first parameter is an Object, iterate over its properties.
        if ( isObject( name ) ) {
            Object.keys( name ).forEach( property => {
                this.set( property, name[ property ] );

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

Open

    stopListening( emitter, event, callback ) {
        const emitters = this[ _listeningTo ];
        let emitterId = emitter && _getEmitterId( emitter );
        const emitterInfo = emitters && emitterId && emitters[ emitterId ];
        const eventCallbacks = emitterInfo && event && emitterInfo.callbacks[ event ];

Function getCode has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

export function getCode( key ) {
    let keyCode;

    if ( typeof key == 'string' ) {
        keyCode = keyCodes[ key.toLowerCase() ];

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Function scrollViewportToShowTarget has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

export function scrollViewportToShowTarget( { target, viewportOffset = 0 } ) {
    const targetWindow = getWindow( target );
    let currentWindow = targetWindow;
    let currentFrame = null;

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Function getSubNodes has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

function getSubNodes( head ) {
    const nodes = [ head ];

    // Nodes are stored to prevent infinite looping.
    const subNodes = new Set();

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Function bind has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    bind( ...bindProperties ) {
        if ( !bindProperties.length || !isStringArray( bindProperties ) ) {
            /**
             * All properties must be strings.
             *

Function excludeScrollbarsAndBorders has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    excludeScrollbarsAndBorders() {
        const source = this._source;
        let scrollBarWidth, scrollBarHeight, direction;

        if ( isWindow( source ) ) {

Function generateKnownKeyCodes has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function generateKnownKeyCodes() {
    const keyCodes = {
        arrowleft: 37,
        arrowup: 38,
        arrowright: 39,

Function _setToTarget has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    _setToTarget( target, name, value, isDefine = false ) {
        // In case of an object, iterate through it and call `_setToTarget` again for each property.
        if ( isPlainObject( name ) ) {
            this._setObjectToTarget( target, name, isDefine );

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Function createEventNamespace has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

function createEventNamespace( source, eventName ) {
    const events = getEvents( source );

    // First, check if the event we want to add to the structure already exists.
    if ( events[ eventName ] ) {

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Function getOptimalPosition has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

export function getOptimalPosition( { element, target, positions, limiter, fitInViewport } ) {
    // If the {@link module:utils/dom/position~Options#target} is a function, use what it returns.
    // https://github.com/ckeditor/ckeditor5-utils/issues/157
    if ( isFunction( target ) ) {
        target = target();

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Function set has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    set( name, value ) {
        // If the first parameter is an Object, iterate over its properties.
        if ( isObject( name ) ) {
            Object.keys( name ).forEach( property => {
                this.set( property, name[ property ] );

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

Open

export function _translate( language, message, quantity = 1 ) {
    if ( typeof quantity !== 'number' ) {
        /**
         * An incorrect value was passed to the translation function. This was probably caused
         * by an incorrect message interpolation of a plural form. Note that for messages supporting plural forms

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

Open

    remove( subject ) {
        let index, id, item;
        let itemDoesNotExist = false;
        const idProperty = this._idProperty;

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

Open

export default function createElement( doc, name, attributes = {}, children = [] ) {
    const namespace = attributes && attributes.xmlns;
    const element = namespace ? doc.createElementNS( namespace, name ) : doc.createElement( name );

    for ( const key in attributes ) {

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

Open

    constructor( source ) {
        const isSourceRange = isRange( source );

        /**
         * The object this rect is for.

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Function scrollWindowToShowRect has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

function scrollWindowToShowRect( window, rect, viewportOffset ) {
    const targetShiftedDownRect = rect.clone().moveBy( 0, viewportOffset );
    const targetShiftedUpRect = rect.clone().moveBy( 0, -viewportOffset );
    const viewportRect = new Rect( window ).excludeScrollbarsAndBorders();

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Function getDomRangeRects has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    static getDomRangeRects( range ) {
        const rects = [];
        // Safari does not iterate over ClientRectList using for...of loop.
        const clientRects = Array.from( range.getClientRects() );

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Function _getItemIdBeforeAdding has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    _getItemIdBeforeAdding( item ) {
        const idProperty = this._idProperty;
        let itemId;

        if ( ( idProperty in item ) ) {

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Function removeCallback has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

function removeCallback( emitter, event, callback ) {
    const lists = getCallbacksListsForNamespace( emitter, event );

    for ( const callbacks of lists ) {
        for ( let i = 0; i < callbacks.length; i++ ) {

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