Function parseLines has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.

Open

function* parseLines(lines, options) {
    let report = null;

    for (const [lineno, line] of enumerate(lines, 1)) {
        const parts = line.split(options.separator);

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Function insertRecord has 41 lines of code (exceeds 25 allowed). Consider refactoring.

Open

export default function insertRecord(report, record) {
    let {kind} = report;

    if (record.reference !== report.reference) {
        throw new Error(

Function parseRecord has 32 lines of code (exceeds 25 allowed). Consider refactoring.

Open

export default function parseRecord(parts, options) {
    let [descriptor, reference, ...rest] = parts;
    descriptor = descriptor.trim(); // To remove <feff> byte order mark
    reference = reference.trim(); // To remove leading and trailing spaces
    parts = [descriptor, reference, ...rest];

Function expandOptions has 31 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function expandOptions(options) {
    const copy = Object.assign({}, options);
    if (
        copy.trailing === undefined ||
        copy.trailing.constructor.prototype !== Object.prototype

Function validateLineLength has 31 lines of code (exceeds 25 allowed). Consider refactoring.

Open

export default function validateLineLength(
    parts,
    kind,
    validLengths,
    trailingSlash,

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

Open

export default function validateLineLength(
    parts,
    kind,
    validLengths,
    trailingSlash,

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Function parseA2 has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

export default function parseA2(parts, options) {
    validateLineLength(parts, 'A2', [6, 7], options.trailing.A2);

    validateRequiredField(parts, 'lastname', 3, options.required.lastname);
    validateRequiredField(parts, 'firstname', 4, options.required.firstname);

Function parseLines has 26 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function* parseLines(lines, options) {
    let report = null;

    for (const [lineno, line] of enumerate(lines, 1)) {
        const parts = line.split(options.separator);

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

Open

export default function insertRecord(report, record) {
    let {kind} = report;

    if (record.reference !== report.reference) {
        throw new Error(

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Avoid too many return statements within this function.

Open

            return parseL5(parts, options);

Avoid too many return statements within this function.

Open

            return parseL1(parts, options);

Avoid too many return statements within this function.

Open

            return parseA5(parts, options);