Initial boiler plate project

node_modules/next/dist/server/web/spec-extension/adapters/headers.js

@@ -0,0 +1,192 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    HeadersAdapter: null,
+    ReadonlyHeadersError: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    HeadersAdapter: function() {
+        return HeadersAdapter;
+    },
+    ReadonlyHeadersError: function() {
+        return ReadonlyHeadersError;
+    }
+});
+const _reflect = require("./reflect");
+class ReadonlyHeadersError extends Error {
+    constructor(){
+        super("Headers cannot be modified. Read more: https://nextjs.org/docs/app/api-reference/functions/headers");
+    }
+    static callable() {
+        throw new ReadonlyHeadersError();
+    }
+}
+class HeadersAdapter extends Headers {
+    constructor(headers){
+        // We've already overridden the methods that would be called, so we're just
+        // calling the super constructor to ensure that the instanceof check works.
+        super();
+        this.headers = new Proxy(headers, {
+            get (target, prop, receiver) {
+                // Because this is just an object, we expect that all "get" operations
+                // are for properties. If it's a "get" for a symbol, we'll just return
+                // the symbol.
+                if (typeof prop === "symbol") {
+                    return _reflect.ReflectAdapter.get(target, prop, receiver);
+                }
+                const lowercased = prop.toLowerCase();
+                // Let's find the original casing of the key. This assumes that there is
+                // no mixed case keys (e.g. "Content-Type" and "content-type") in the
+                // headers object.
+                const original = Object.keys(headers).find((o)=>o.toLowerCase() === lowercased);
+                // If the original casing doesn't exist, return undefined.
+                if (typeof original === "undefined") return;
+                // If the original casing exists, return the value.
+                return _reflect.ReflectAdapter.get(target, original, receiver);
+            },
+            set (target, prop, value, receiver) {
+                if (typeof prop === "symbol") {
+                    return _reflect.ReflectAdapter.set(target, prop, value, receiver);
+                }
+                const lowercased = prop.toLowerCase();
+                // Let's find the original casing of the key. This assumes that there is
+                // no mixed case keys (e.g. "Content-Type" and "content-type") in the
+                // headers object.
+                const original = Object.keys(headers).find((o)=>o.toLowerCase() === lowercased);
+                // If the original casing doesn't exist, use the prop as the key.
+                return _reflect.ReflectAdapter.set(target, original ?? prop, value, receiver);
+            },
+            has (target, prop) {
+                if (typeof prop === "symbol") return _reflect.ReflectAdapter.has(target, prop);
+                const lowercased = prop.toLowerCase();
+                // Let's find the original casing of the key. This assumes that there is
+                // no mixed case keys (e.g. "Content-Type" and "content-type") in the
+                // headers object.
+                const original = Object.keys(headers).find((o)=>o.toLowerCase() === lowercased);
+                // If the original casing doesn't exist, return false.
+                if (typeof original === "undefined") return false;
+                // If the original casing exists, return true.
+                return _reflect.ReflectAdapter.has(target, original);
+            },
+            deleteProperty (target, prop) {
+                if (typeof prop === "symbol") return _reflect.ReflectAdapter.deleteProperty(target, prop);
+                const lowercased = prop.toLowerCase();
+                // Let's find the original casing of the key. This assumes that there is
+                // no mixed case keys (e.g. "Content-Type" and "content-type") in the
+                // headers object.
+                const original = Object.keys(headers).find((o)=>o.toLowerCase() === lowercased);
+                // If the original casing doesn't exist, return true.
+                if (typeof original === "undefined") return true;
+                // If the original casing exists, delete the property.
+                return _reflect.ReflectAdapter.deleteProperty(target, original);
+            }
+        });
+    }
+    /**
+   * Seals a Headers instance to prevent modification by throwing an error when
+   * any mutating method is called.
+   */ static seal(headers) {
+        return new Proxy(headers, {
+            get (target, prop, receiver) {
+                switch(prop){
+                    case "append":
+                    case "delete":
+                    case "set":
+                        return ReadonlyHeadersError.callable;
+                    default:
+                        return _reflect.ReflectAdapter.get(target, prop, receiver);
+                }
+            }
+        });
+    }
+    /**
+   * Merges a header value into a string. This stores multiple values as an
+   * array, so we need to merge them into a string.
+   *
+   * @param value a header value
+   * @returns a merged header value (a string)
+   */ merge(value) {
+        if (Array.isArray(value)) return value.join(", ");
+        return value;
+    }
+    /**
+   * Creates a Headers instance from a plain object or a Headers instance.
+   *
+   * @param headers a plain object or a Headers instance
+   * @returns a headers instance
+   */ static from(headers) {
+        if (headers instanceof Headers) return headers;
+        return new HeadersAdapter(headers);
+    }
+    append(name, value) {
+        const existing = this.headers[name];
+        if (typeof existing === "string") {
+            this.headers[name] = [
+                existing,
+                value
+            ];
+        } else if (Array.isArray(existing)) {
+            existing.push(value);
+        } else {
+            this.headers[name] = value;
+        }
+    }
+    delete(name) {
+        delete this.headers[name];
+    }
+    get(name) {
+        const value = this.headers[name];
+        if (typeof value !== "undefined") return this.merge(value);
+        return null;
+    }
+    has(name) {
+        return typeof this.headers[name] !== "undefined";
+    }
+    set(name, value) {
+        this.headers[name] = value;
+    }
+    forEach(callbackfn, thisArg) {
+        for (const [name, value] of this.entries()){
+            callbackfn.call(thisArg, value, name, this);
+        }
+    }
+    *entries() {
+        for (const key of Object.keys(this.headers)){
+            const name = key.toLowerCase();
+            // We assert here that this is a string because we got it from the
+            // Object.keys() call above.
+            const value = this.get(name);
+            yield [
+                name,
+                value
+            ];
+        }
+    }
+    *keys() {
+        for (const key of Object.keys(this.headers)){
+            const name = key.toLowerCase();
+            yield name;
+        }
+    }
+    *values() {
+        for (const key of Object.keys(this.headers)){
+            // We assert here that this is a string because we got it from the
+            // Object.keys() call above.
+            const value = this.get(key);
+            yield value;
+        }
+    }
+    [Symbol.iterator]() {
+        return this.entries();
+    }
+}
+
+//# sourceMappingURL=headers.js.map