name : resolve-uri.umd.js (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.resolveURI = factory()); })(this, (function () { 'use strict'; // Matches the scheme of a URL, eg "http://" const schemeRegex = /^[\w+.-]+:\/\//; /** * Matches the parts of a URL: * 1. Scheme, including ":", guaranteed. * 2. User/password, including "@", optional. * 3. Host, guaranteed. * 4. Port, including ":", optional. * 5. Path, including "/", optional. * 6. Query, including "?", optional. * 7. Hash, including "#", optional. */ const urlRegex = /^([\w+.-]+:)\/\/([^@/#?]*@)?([^:/#?]*)(:\d+)?(\/[^#?]*)?(\?[^#]*)?(#.*)?/; /** * File URLs are weird. They dont' need the regular `//` in the scheme, they may or may not start * with a leading `/`, they can have a domain (but only if they don't start with a Windows drive). * * 1. Host, optional. * 2. Path, which may include "/", guaranteed. * 3. Query, including "?", optional. * 4. Hash, including "#", optional. */ const fileRegex = /^file:(?:\/\/((?![a-z]:)[^/#?]*)?)?(\/?[^#?]*)(\?[^#]*)?(#.*)?/i; function isAbsoluteUrl(input) { return schemeRegex.test(input); } function isSchemeRelativeUrl(input) { return input.startsWith('//'); } function isAbsolutePath(input) { return input.startsWith('/'); } function isFileUrl(input) { return input.startsWith('file:'); } function isRelative(input) { return /^[.?#]/.test(input); } function parseAbsoluteUrl(input) { const match = urlRegex.exec(input); return makeUrl(match[1], match[2] || '', match[3], match[4] || '', match[5] || '/', match[6] || '', match[7] || ''); } function parseFileUrl(input) { const match = fileRegex.exec(input); const path = match[2]; return makeUrl('file:', '', match[1] || '', '', isAbsolutePath(path) ? path : '/' + path, match[3] || '', match[4] || ''); } function makeUrl(scheme, user, host, port, path, query, hash) { return { scheme, user, host, port, path, query, hash, type: 7 /* Absolute */, }; } function parseUrl(input) { if (isSchemeRelativeUrl(input)) { const url = parseAbsoluteUrl('http:' + input); url.scheme = ''; url.type = 6 /* SchemeRelative */; return url; } if (isAbsolutePath(input)) { const url = parseAbsoluteUrl('http://foo.com' + input); url.scheme = ''; url.host = ''; url.type = 5 /* AbsolutePath */; return url; } if (isFileUrl(input)) return parseFileUrl(input); if (isAbsoluteUrl(input)) return parseAbsoluteUrl(input); const url = parseAbsoluteUrl('http://foo.com/' + input); url.scheme = ''; url.host = ''; url.type = input ? input.startsWith('?') ? 3 /* Query */ : input.startsWith('#') ? 2 /* Hash */ : 4 /* RelativePath */ : 1 /* Empty */; return url; } function stripPathFilename(path) { // If a path ends with a parent directory "..", then it's a relative path with excess parent // paths. It's not a file, so we can't strip it. if (path.endsWith('/..')) return path; const index = path.lastIndexOf('/'); return path.slice(0, index + 1); } function mergePaths(url, base) { normalizePath(base, base.type); // If the path is just a "/", then it was an empty path to begin with (remember, we're a relative // path). if (url.path === '/') { url.path = base.path; } else { // Resolution happens relative to the base path's directory, not the file. url.path = stripPathFilename(base.path) + url.path; } } /** * The path can have empty directories "//", unneeded parents "foo/..", or current directory * "foo/.". We need to normalize to a standard representation. */ function normalizePath(url, type) { const rel = type <= 4 /* RelativePath */; const pieces = url.path.split('/'); // We need to preserve the first piece always, so that we output a leading slash. The item at // pieces[0] is an empty string. let pointer = 1; // Positive is the number of real directories we've output, used for popping a parent directory. // Eg, "foo/bar/.." will have a positive 2, and we can decrement to be left with just "foo". let positive = 0; // We need to keep a trailing slash if we encounter an empty directory (eg, splitting "foo/" will // generate `["foo", ""]` pieces). And, if we pop a parent directory. But once we encounter a // real directory, we won't need to append, unless the other conditions happen again. let addTrailingSlash = false; for (let i = 1; i < pieces.length; i++) { const piece = pieces[i]; // An empty directory, could be a trailing slash, or just a double "//" in the path. if (!piece) { addTrailingSlash = true; continue; } // If we encounter a real directory, then we don't need to append anymore. addTrailingSlash = false; // A current directory, which we can always drop. if (piece === '.') continue; // A parent directory, we need to see if there are any real directories we can pop. Else, we // have an excess of parents, and we'll need to keep the "..". if (piece === '..') { if (positive) { addTrailingSlash = true; positive--; pointer--; } else if (rel) { // If we're in a relativePath, then we need to keep the excess parents. Else, in an absolute // URL, protocol relative URL, or an absolute path, we don't need to keep excess. pieces[pointer++] = piece; } continue; } // We've encountered a real directory. Move it to the next insertion pointer, which accounts for // any popped or dropped directories. pieces[pointer++] = piece; positive++; } let path = ''; for (let i = 1; i < pointer; i++) { path += '/' + pieces[i]; } if (!path || (addTrailingSlash && !path.endsWith('/..'))) { path += '/'; } url.path = path; } /** * Attempts to resolve `input` URL/path relative to `base`. */ function resolve(input, base) { if (!input && !base) return ''; const url = parseUrl(input); let inputType = url.type; if (base && inputType !== 7 /* Absolute */) { const baseUrl = parseUrl(base); const baseType = baseUrl.type; switch (inputType) { case 1 /* Empty */: url.hash = baseUrl.hash; // fall through case 2 /* Hash */: url.query = baseUrl.query; // fall through case 3 /* Query */: case 4 /* RelativePath */: mergePaths(url, baseUrl); // fall through case 5 /* AbsolutePath */: // The host, user, and port are joined, you can't copy one without the others. url.user = baseUrl.user; url.host = baseUrl.host; url.port = baseUrl.port; // fall through case 6 /* SchemeRelative */: // The input doesn't have a schema at least, so we need to copy at least that over. url.scheme = baseUrl.scheme; } if (baseType > inputType) inputType = baseType; } normalizePath(url, inputType); const queryHash = url.query + url.hash; switch (inputType) { // This is impossible, because of the empty checks at the start of the function. // case UrlType.Empty: case 2 /* Hash */: case 3 /* Query */: return queryHash; case 4 /* RelativePath */: { // The first char is always a "/", and we need it to be relative. const path = url.path.slice(1); if (!path) return queryHash || '.'; if (isRelative(base || input) && !isRelative(path)) { // If base started with a leading ".", or there is no base and input started with a ".", // then we need to ensure that the relative path starts with a ".". We don't know if // relative starts with a "..", though, so check before prepending. return './' + path + queryHash; } return path + queryHash; } case 5 /* AbsolutePath */: return url.path + queryHash; default: return url.scheme + '//' + url.user + url.host + url.port + url.path + queryHash; } } return resolve; })); //# sourceMappingURL=resolve-uri.umd.js.map