next-sitemap/dist/esm/utils/matcher.js

Sitemap generator for next.js

/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
export const escapeStringRegexp = (text) => {
    if (typeof text !== 'string') {
        throw new TypeError('Expected a string');
    }
    // Escape characters with special meaning either inside or outside character sets.
    // Use a simple backslash escape when it’s always valid, and a `\xnn` escape when the simpler form would be disallowed by Unicode patterns’ stricter grammar.
    return text?.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&').replace(/-/g, '\\x2d');
};
const regexpCache = new Map();
const sanitizeArray = (input, inputName) => {
    if (!Array.isArray(input)) {
        switch (typeof input) {
            case 'string':
                input = [input];
                break;
            case 'undefined':
                input = [];
                break;
            default:
                throw new TypeError(`Expected '${inputName}' to be a string or an array, but got a type of '${typeof input}'`);
        }
    }
    return input.filter((string) => {
        if (typeof string !== 'string') {
            if (typeof string === 'undefined') {
                return false;
            }
            throw new TypeError(`Expected '${inputName}' to be an array of strings, but found a type of '${typeof string}' in the array`);
        }
        return true;
    });
};
const makeRegexp = (pattern, options = {}) => {
    options = {
        caseSensitive: false,
        ...options,
    };
    const cacheKey = pattern + JSON.stringify(options);
    if (regexpCache.has(cacheKey)) {
        return regexpCache.get(cacheKey);
    }
    const negated = pattern[0] === '!';
    if (negated) {
        pattern = pattern.slice(1);
    }
    pattern = escapeStringRegexp(pattern).replace(/\\\*/g, '[\\s\\S]*');
    const regexp = new RegExp(`^${pattern}$`, options.caseSensitive ? '' : 'i');
    regexp.negated = negated;
    regexpCache.set(cacheKey, regexp);
    return regexp;
};
const baseMatcher = (inputs, patterns, options = {}, firstMatchOnly = false) => {
    inputs = sanitizeArray(inputs, 'inputs');
    patterns = sanitizeArray(patterns, 'patterns');
    if (patterns.length === 0) {
        return [];
    }
    patterns = patterns.map((pattern) => makeRegexp(pattern, options));
    const { allPatterns } = options || {};
    const result = [];
    for (const input of inputs) {
        // String is included only if it matches at least one non-negated pattern supplied.
        // Note: the `allPatterns` option requires every non-negated pattern to be matched once.
        // Matching a negated pattern excludes the string.
        let matches;
        const didFit = [...patterns].fill(false);
        for (const [index, pattern] of patterns.entries()) {
            if (pattern.test(input)) {
                didFit[index] = true;
                matches = !pattern.negated;
                if (!matches) {
                    break;
                }
            }
        }
        if (!(matches === false ||
            (matches === undefined &&
                patterns.some((pattern) => !pattern.negated)) ||
            (allPatterns &&
                didFit.some((yes, index) => !yes && !patterns[index].negated)))) {
            result.push(input);
            if (firstMatchOnly) {
                break;
            }
        }
    }
    return result;
};
export const matcher = (inputs, patterns, options = {}) => {
    return baseMatcher(inputs, patterns, options, false);
};
export const isMatch = (inputs, patterns, options = {}) => {
    return baseMatcher(inputs, patterns, options, true).length > 0;
};