kequapp/dist/router/util/warn-duplicates.js

A minimal, zero-magic Node web framework built on native APIs

import { getParts } from "./extract.js";
export default function warnDuplicates(routes, warn) {
    const found = [];
    for (let i = 0; i < routes.length; i++) {
        const partsi = getParts(routes[i].url);
        for (let j = 0; j < routes.length; j++) {
            if (i === j || found.includes(j))
                continue;
            if (routes[i].method !== routes[j].method)
                continue;
            const partsj = getParts(routes[j].url);
            if (!isMatch(partsi, partsj))
                continue;
            found.push(i);
            const a = partsi.join('/');
            const b = partsj.join('/');
            warn(`Duplicate route detected: ${routes[i].method} '/${a}' '/${b}'`);
        }
    }
}
function isMatch(aa, bb) {
    let aIsWild = false;
    let bIsWild = false;
    for (let i = 0; i < Math.max(aa.length, bb.length); i++) {
        const a = aa[i];
        const b = bb[i];
        if (a === '**')
            aIsWild = true;
        if (b === '**')
            bIsWild = true;
        if ((aIsWild || a?.startsWith(':')) && (bIsWild || b?.startsWith(':')))
            continue;
        if (a === b)
            continue;
        return false;
    }
    return true;
}