kequapp/dist/router/create-regexp.js

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

import { getParts } from "./util/extract.js";
export const PARA = '[^/]+';
export const WILD = '.*';
export default function createRegexp(url, isWild = false) {
    return new RegExp(`^/${convertUrl(url, isWild)}$`, 'i');
}
function convertUrl(url, isWild) {
    const parts = getParts(url);
    const wildIndex = getWildIndex(parts, isWild);
    const hasWild = wildIndex > -1;
    const trimmed = hasWild ? parts.slice(0, wildIndex) : parts;
    const converted = trimmed.map(replaceParam).join('/');
    return hasWild ? `${converted}(?<wild>${WILD})` : converted;
}
function getWildIndex(parts, isWild) {
    const wildIndex = parts.indexOf('**');
    return wildIndex > -1 || !isWild ? wildIndex : parts.length;
}
function replaceParam(part) {
    if (part.startsWith(':')) {
        return `(?<${part.substring(1)}>${PARA})`;
    }
    return escapeRegExp(part);
}
function escapeRegExp(part) {
    return part.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}