Initial boiler plate project

node_modules/next/dist/esm/server/web/utils.js

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+/**
+ * Converts a Node.js IncomingHttpHeaders object to a Headers object. Any
+ * headers with multiple values will be joined with a comma and space. Any
+ * headers that have an undefined value will be ignored and others will be
+ * coerced to strings.
+ *
+ * @param nodeHeaders the headers object to convert
+ * @returns the converted headers object
+ */ export function fromNodeOutgoingHttpHeaders(nodeHeaders) {
+    const headers = new Headers();
+    for (let [key, value] of Object.entries(nodeHeaders)){
+        const values = Array.isArray(value) ? value : [
+            value
+        ];
+        for (let v of values){
+            if (typeof v === "undefined") continue;
+            if (typeof v === "number") {
+                v = v.toString();
+            }
+            headers.append(key, v);
+        }
+    }
+    return headers;
+}
+/*
+  Set-Cookie header field-values are sometimes comma joined in one string. This splits them without choking on commas
+  that are within a single set-cookie field-value, such as in the Expires portion.
+  This is uncommon, but explicitly allowed - see https://tools.ietf.org/html/rfc2616#section-4.2
+  Node.js does this for every header *except* set-cookie - see https://github.com/nodejs/node/blob/d5e363b77ebaf1caf67cd7528224b651c86815c1/lib/_http_incoming.js#L128
+  React Native's fetch does this for *every* header, including set-cookie.
+  
+  Based on: https://github.com/google/j2objc/commit/16820fdbc8f76ca0c33472810ce0cb03d20efe25
+  Credits to: https://github.com/tomball for original and https://github.com/chrusart for JavaScript implementation
+*/ export function splitCookiesString(cookiesString) {
+    var cookiesStrings = [];
+    var pos = 0;
+    var start;
+    var ch;
+    var lastComma;
+    var nextStart;
+    var cookiesSeparatorFound;
+    function skipWhitespace() {
+        while(pos < cookiesString.length && /\s/.test(cookiesString.charAt(pos))){
+            pos += 1;
+        }
+        return pos < cookiesString.length;
+    }
+    function notSpecialChar() {
+        ch = cookiesString.charAt(pos);
+        return ch !== "=" && ch !== ";" && ch !== ",";
+    }
+    while(pos < cookiesString.length){
+        start = pos;
+        cookiesSeparatorFound = false;
+        while(skipWhitespace()){
+            ch = cookiesString.charAt(pos);
+            if (ch === ",") {
+                // ',' is a cookie separator if we have later first '=', not ';' or ','
+                lastComma = pos;
+                pos += 1;
+                skipWhitespace();
+                nextStart = pos;
+                while(pos < cookiesString.length && notSpecialChar()){
+                    pos += 1;
+                }
+                // currently special character
+                if (pos < cookiesString.length && cookiesString.charAt(pos) === "=") {
+                    // we found cookies separator
+                    cookiesSeparatorFound = true;
+                    // pos is inside the next cookie, so back up and return it.
+                    pos = nextStart;
+                    cookiesStrings.push(cookiesString.substring(start, lastComma));
+                    start = pos;
+                } else {
+                    // in param ',' or param separator ';',
+                    // we continue from that comma
+                    pos = lastComma + 1;
+                }
+            } else {
+                pos += 1;
+            }
+        }
+        if (!cookiesSeparatorFound || pos >= cookiesString.length) {
+            cookiesStrings.push(cookiesString.substring(start, cookiesString.length));
+        }
+    }
+    return cookiesStrings;
+}
+/**
+ * Converts a Headers object to a Node.js OutgoingHttpHeaders object. This is
+ * required to support the set-cookie header, which may have multiple values.
+ *
+ * @param headers the headers object to convert
+ * @returns the converted headers object
+ */ export function toNodeOutgoingHttpHeaders(headers) {
+    const nodeHeaders = {};
+    const cookies = [];
+    if (headers) {
+        for (const [key, value] of headers.entries()){
+            if (key.toLowerCase() === "set-cookie") {
+                // We may have gotten a comma joined string of cookies, or multiple
+                // set-cookie headers. We need to merge them into one header array
+                // to represent all the cookies.
+                cookies.push(...splitCookiesString(value));
+                nodeHeaders[key] = cookies.length === 1 ? cookies[0] : cookies;
+            } else {
+                nodeHeaders[key] = value;
+            }
+        }
+    }
+    return nodeHeaders;
+}
+/**
+ * Validate the correctness of a user-provided URL.
+ */ export function validateURL(url) {
+    try {
+        return String(new URL(String(url)));
+    } catch (error) {
+        throw new Error(`URL is malformed "${String(url)}". Please use only absolute URLs - https://nextjs.org/docs/messages/middleware-relative-urls`, {
+            cause: error
+        });
+    }
+}
+
+//# sourceMappingURL=utils.js.map