function matches()

in apps/mountebank-mock/mountebank-source/src/models/predicates.js [325:347]

• 17 lines of code
• 5 McCabe index (conditional complexity)

function matches (predicate, request, encoding, logger) {
    // We want to avoid the lowerCase transform on values so we don't accidentally butcher
    // a regular expression with upper case metacharacters like \W and \S
    // However, we need to maintain the case transform for keys like http header names (issue #169)
    // eslint-disable-next-line no-unneeded-ternary
    const caseSensitive = predicate.caseSensitive ? true : false, // convert to boolean even if undefined
        clone = helpers.merge(predicate, { caseSensitive: true, keyCaseSensitive: caseSensitive }),
        noexcept = helpers.merge(clone, { except: '' }),
        expected = normalize(predicate.matches, noexcept, { encoding: encoding }, logger),
        actual = normalize(request, clone, { encoding: encoding, withSelectors: true }, logger),
        options = caseSensitive ? '' : 'i';

    if (encoding === 'base64') {
        throw errors.ValidationError('the matches predicate is not allowed in binary mode');
    }

    return predicateSatisfied(expected, actual, clone, (a, b) => {
        if (!safeRegex(a)) {
            logger.warn(`If mountebank becomes unresponsive, it is because of this unsafe regular expression: ${a}`);
        }
        return new RegExp(a, options).test(b);
    });
}