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

Open

    timesQubitOperation(operation2x2, qubitIndex, controlMask, desiredValueMask) {
        Util.need((controlMask & (1 << qubitIndex)) === 0, "Matrix.timesQubitOperation: self-controlled");
        Util.need(operation2x2._width === 2 && operation2x2._height === 2, "Matrix.timesQubitOperation: not 2x2");

        let {_width: w, _height: h, _buffer: old} = this;

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

Open

let interleavePainter = reverse => args => {
    if (args.positionInCircuit !== undefined) {
        GatePainting.PERMUTATION_DRAWER(args);
        return;
    }

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Avoid too many return statements within this function.

Open

    return true;

Avoid too many return statements within this function.

Open

        return equate_Indexables(subject, other);

Avoid too many return statements within this function.

Open

        return equate_Sets(subject, other);

Avoid too many return statements within this function.

Open

    return equate_Objects(subject, other);

Avoid too many return statements within this function.

Open

    return undefined;

Avoid too many return statements within this function.

Open

    return undefined;

Avoid too many return statements within this function.

Open

        return value;

Avoid too many return statements within this function.

Open

    return value.toString();

Avoid too many return statements within this function.

Open

        return this._toString_bothValues(format);

Avoid too many return statements within this function.

Open

        return undefined;

Avoid too many return statements within this function.

Open

        return value.toFixed(digits);

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

Open

    static _paintGateTooltip_matrix(painter, gate, matrix, pad, dispSize, w, pushRect, nextY) {
        if (matrix === undefined) {
            return;
        }

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

Open

    _shiftAndSpliceColumn(rowShift, gatesOfCol, insertCol, isInsert) {
        // Move gates upward.
        while (rowShift < 0 && gatesOfCol[0] === undefined) {
            gatesOfCol.shift();
            gatesOfCol.push(undefined);

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

Open

    _updateMeasureMask_gateStep(state, row, disabledReasons) {
        if (disabledReasons[row] !== undefined) {
            return;
        }

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

Open

    previewDrop(hand) {
        return hand.heldRow !== undefined ? this._previewDropMovedRow(hand) :
            hand.heldColumn !== undefined ? this._previewDropMovedGateColumn(hand) :
            hand.heldGate !== undefined ? this._previewDropMovedGate(hand) :
            this._previewResizedGate(hand);

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

Open

let GATE_CIRCUIT_DRAWER = args => {
    let circuit = args.gate.knownCircuit;
    if (circuit === undefined || args.gate.symbol !== '') {
        if (args.gate.stableDuration() === Infinity) {
            GatePainting.DEFAULT_DRAWER(args);

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

Open

function describe_Object(value, limit) {
    let entries = [];
    for (let k in value) {
        if (!value.hasOwnProperty(k)) {
            continue;

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

Open

    _findHeightWiseOverlapsInCol(col) {
        let pushedGates = new Set();
        let h = 0;
        for (let row = 0; row < this.numWires; row++) {
            h -= 1;

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