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c592d77 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | "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 |