route-regex.js

"use strict";exports.__esModule=true;exports.getRouteRegex=getRouteRegex;// this isn't importing the escape-string-regex module
// to reduce bytes
function escapeRegex(str){return str.replace(/[|\\{}()[\]^$+*?.-]/g,'\\$&');}function parseParameter(param){const optional=param.startsWith('[')&&param.endsWith(']');if(optional){param=param.slice(1,-1);}const repeat=param.startsWith('...');if(repeat){param=param.slice(3);}return{key:param,repeat,optional};}function getRouteRegex(normalizedRoute){const segments=(normalizedRoute.replace(/\/$/,'')||'/').slice(1).split('/');const groups={};let groupIndex=1;const parameterizedRoute=segments.map(segment=>{if(segment.startsWith('[')&&segment.endsWith(']')){const{key,optional,repeat}=parseParameter(segment.slice(1,-1));groups[key]={pos:groupIndex++,repeat,optional};return repeat?optional?'(?:/(.+?))?':'/(.+?)':'/([^/]+?)';}else{return`/${escapeRegex(segment)}`;}}).join('');// dead code eliminate for browser since it's only needed
// while generating routes-manifest
if(typeof window==='undefined'){let routeKeyCharCode=97;let routeKeyCharLength=1;// builds a minimal routeKey using only a-z and minimal number of characters
const getSafeRouteKey=()=>{let routeKey='';for(let i=0;i<routeKeyCharLength;i++){routeKey+=String.fromCharCode(routeKeyCharCode);routeKeyCharCode++;if(routeKeyCharCode>122){routeKeyCharLength++;routeKeyCharCode=97;}}return routeKey;};const routeKeys={};let namedParameterizedRoute=segments.map(segment=>{if(segment.startsWith('[')&&segment.endsWith(']')){const{key,optional,repeat}=parseParameter(segment.slice(1,-1));// replace any non-word characters since they can break
// the named regex
let cleanedKey=key.replace(/\W/g,'');let invalidKey=false;// check if the key is still invalid and fallback to using a known
// safe key
if(cleanedKey.length===0||cleanedKey.length>30){invalidKey=true;}if(!isNaN(parseInt(cleanedKey.substr(0,1)))){invalidKey=true;}if(invalidKey){cleanedKey=getSafeRouteKey();}routeKeys[cleanedKey]=key;return repeat?optional?`(?:/(?<${cleanedKey}>.+?))?`:`/(?<${cleanedKey}>.+?)`:`/(?<${cleanedKey}>[^/]+?)`;}else{return`/${escapeRegex(segment)}`;}}).join('');return{re:new RegExp(`^${parameterizedRoute}(?:/)?$`),groups,routeKeys,namedRegex:`^${namedParameterizedRoute}(?:/)?$`};}return{re:new RegExp(`^${parameterizedRoute}(?:/)?$`),groups};}
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