add hw2

node_modules/@jridgewell/resolve-uri/dist/resolve-uri.mjs

@@ -0,0 +1,232 @@
+// 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;
+    }
+}
+
+export { resolve as default };
+//# sourceMappingURL=resolve-uri.mjs.map