68 lines
1.6 KiB
JavaScript
68 lines
1.6 KiB
JavaScript
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import pathToRegexp from "path-to-regexp";
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const cache = {};
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const cacheLimit = 10000;
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let cacheCount = 0;
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function compilePath(path, options) {
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const cacheKey = `${options.end}${options.strict}${options.sensitive}`;
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const pathCache = cache[cacheKey] || (cache[cacheKey] = {});
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if (pathCache[path]) return pathCache[path];
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const keys = [];
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const regexp = pathToRegexp(path, keys, options);
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const result = { regexp, keys };
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if (cacheCount < cacheLimit) {
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pathCache[path] = result;
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cacheCount++;
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}
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return result;
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}
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/**
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* Public API for matching a URL pathname to a path.
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*/
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function matchPath(pathname, options = {}) {
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if (typeof options === "string" || Array.isArray(options)) {
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options = { path: options };
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}
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const { path, exact = false, strict = false, sensitive = false } = options;
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const paths = [].concat(path);
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return paths.reduce((matched, path) => {
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if (!path && path !== "") return null;
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if (matched) return matched;
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const { regexp, keys } = compilePath(path, {
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end: exact,
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strict,
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sensitive
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});
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const match = regexp.exec(pathname);
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if (!match) return null;
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const [url, ...values] = match;
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const isExact = pathname === url;
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if (exact && !isExact) return null;
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return {
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path, // the path used to match
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url: path === "/" && url === "" ? "/" : url, // the matched portion of the URL
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isExact, // whether or not we matched exactly
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params: keys.reduce((memo, key, index) => {
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memo[key.name] = values[index];
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return memo;
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}, {})
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};
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}, null);
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}
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export default matchPath;
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