next/dist/build/templates/middleware.js

The React Framework

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "default", {
    enumerable: true,
    get: function() {
        return nHandler;
    }
});
const _globals = require("../../server/web/globals");
const _adapter = require("../../server/web/adapter");
const _VAR_USERLAND = /*#__PURE__*/ _interop_require_wildcard(require("VAR_USERLAND"));
const _isnextroutererror = require("../../client/components/is-next-router-error");
function _getRequireWildcardCache(nodeInterop) {
    if (typeof WeakMap !== "function") return null;
    var cacheBabelInterop = new WeakMap();
    var cacheNodeInterop = new WeakMap();
    return (_getRequireWildcardCache = function(nodeInterop) {
        return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
    })(nodeInterop);
}
function _interop_require_wildcard(obj, nodeInterop) {
    if (!nodeInterop && obj && obj.__esModule) {
        return obj;
    }
    if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
        return {
            default: obj
        };
    }
    var cache = _getRequireWildcardCache(nodeInterop);
    if (cache && cache.has(obj)) {
        return cache.get(obj);
    }
    var newObj = {
        __proto__: null
    };
    var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
    for(var key in obj){
        if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) {
            var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
            if (desc && (desc.get || desc.set)) {
                Object.defineProperty(newObj, key, desc);
            } else {
                newObj[key] = obj[key];
            }
        }
    }
    newObj.default = obj;
    if (cache) {
        cache.set(obj, newObj);
    }
    return newObj;
}
const mod = {
    ..._VAR_USERLAND
};
const page = 'VAR_DEFINITION_PAGE';
const isProxy = page === '/proxy' || page === '/src/proxy';
const handler = (isProxy ? mod.proxy : mod.middleware) || mod.default;
class ProxyMissingExportError extends Error {
    constructor(message){
        super(message);
        // Stack isn't useful here, remove it considering it spams logs during development.
        this.stack = '';
    }
}
// TODO: This spams logs during development. Find a better way to handle this.
// Removing this will spam "fn is not a function" logs which is worse.
if (typeof handler !== 'function') {
    throw new ProxyMissingExportError(`The ${isProxy ? 'Proxy' : 'Middleware'} file "${page}" must export a function named \`${isProxy ? 'proxy' : 'middleware'}\` or a default function.`);
}
// Proxy will only sent out the FetchEvent to next server,
// so load instrumentation module here and track the error inside proxy module.
function errorHandledHandler(fn) {
    return async (...args)=>{
        try {
            return await fn(...args);
        } catch (err) {
            // In development, error the navigation API usage in runtime,
            // since it's not allowed to be used in proxy as it's outside of react component tree.
            if (process.env.NODE_ENV !== 'production') {
                if ((0, _isnextroutererror.isNextRouterError)(err)) {
                    err.message = `Next.js navigation API is not allowed to be used in ${isProxy ? 'Proxy' : 'Middleware'}.`;
                    throw err;
                }
            }
            const req = args[0];
            const url = new URL(req.url);
            const resource = url.pathname + url.search;
            await (0, _globals.edgeInstrumentationOnRequestError)(err, {
                path: resource,
                method: req.method,
                headers: Object.fromEntries(req.headers.entries())
            }, {
                routerKind: 'Pages Router',
                routePath: '/proxy',
                routeType: 'proxy',
                revalidateReason: undefined
            });
            throw err;
        }
    };
}
function nHandler(opts) {
    return (0, _adapter.adapter)({
        ...opts,
        page,
        handler: errorHandledHandler(handler)
    });
}

//# sourceMappingURL=middleware.js.map