Function clear has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.

Open

    clear( range, element ) {
        validateRangeContainer( range, this.document );

        // Create walker on given range.
        // We walk backward because when we remove element during walk it modifies range end position.

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Function render has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.

Open

    render() {
        let inlineFillerPosition;

        // Refresh mappings.
        for ( const element of this.markedChildren ) {

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Function _mergeSiblingsOf has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.

Open

    _mergeSiblingsOf( node, context ) {
        if ( !( node instanceof Element ) ) {
            return;
        }

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Function handleBackwardMovement has 49 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    handleBackwardMovement( position, data ) {
        const attribute = this.attribute;

        // When the gravity is already overridden...
        if ( this._isGravityOverridden ) {

Function _previous has 49 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    _previous() {
        const previousPosition = this.position;
        const position = this.position.clone();
        const parent = this._visitedParent;

Function changeAttribute has 49 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function changeAttribute( attributeCreator ) {
    return ( evt, data, conversionApi ) => {
        const oldAttribute = attributeCreator( data.attributeOldValue, data );
        const newAttribute = attributeCreator( data.attributeNewValue, data );

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

Open

    _next() {
        const previousPosition = this.position;
        const position = this.position.clone();
        const parent = this._visitedParent;

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

Open

export function transformSets( operationsA, operationsB, options ) {
    // Create new arrays so the originally passed arguments are not changed.
    // No need to clone operations, they are cloned as they are transformed.
    operationsA = operationsA.slice();
    operationsB = operationsB.slice();

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

Open

function matchClasses( patterns, element ) {
    const match = [];

    for ( const pattern of patterns ) {
        if ( pattern instanceof RegExp ) {

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

Open

function matchAttributes( patterns, element ) {
    const match = [];

    for ( const name in patterns ) {
        const pattern = patterns[ name ];

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

Open

    _breakAttributes( position, forceSplitText = false ) {
        const positionOffset = position.offset;
        const positionParent = position.parent;

        // If position is placed inside EmptyElement - throw an exception as we cannot break inside.

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

Open

    isEqual( otherSelection ) {
        if ( this.isFake != otherSelection.isFake ) {
            return false;
        }

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

Open

export function _normalizeNodes( nodes ) {
    const normalized = [];

    if ( !( nodes instanceof Array ) ) {
        nodes = [ nodes ];

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

Open

    _getTransformedByDeletion( deletePosition, howMany ) {
        const transformed = Position._createAt( this );

        // This position can't be affected if deletion was in a different root.
        if ( this.root != deletePosition.root ) {

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

Open

function createViewElementFromDefinition( viewElementDefinition, viewWriter, viewElementType ) {
    if ( typeof viewElementDefinition == 'string' ) {
        // If `viewElementDefinition` is given as a `String`, normalize it to an object with `name` property.
        viewElementDefinition = { name: viewElementDefinition };
    }

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Function _mergeSiblingsOf has 47 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    _mergeSiblingsOf( node, context ) {
        if ( !( node instanceof Element ) ) {
            return;
        }

Function _unwrapChildren has 46 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    _unwrapChildren( parent, startOffset, endOffset, unwrapElement ) {
        let i = startOffset;
        const unwrapPositions = [];

        // Iterate over each element between provided offsets inside parent.

Function insert has 45 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    insert( item, itemOrPosition, offset = 0 ) {
        this._assertWriterUsedCorrectly();

        if ( item instanceof Text && item.data == '' ) {
            return;

Function _getTransformedByMove has 45 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    _getTransformedByMove( sourcePosition, targetPosition, howMany, spread = false ) {
        // Special case for transforming a collapsed range. Just transform it like a position.
        if ( this.isCollapsed ) {
            const newPos = this.start._getTransformedByMove( sourcePosition, targetPosition, howMany );

Function domToView has 44 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    domToView( domNode, options = {} ) {
        if ( this.isBlockFiller( domNode, this.blockFillerMode ) ) {
            return null;
        }