@serverless-stack/nextjs-lambda
Version:
Provides handlers that can be used in CloudFront Lambda@Edge to deploy next.js applications to the edge
1,597 lines • 61 kB
JavaScript
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
var manifest = require('./manifest.json');
var RoutesManifestJson = require('./routes-manifest.json');
var Stream = require('stream');
var zlib = require('zlib');
var http = require('http');
function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
var manifest__default = /*#__PURE__*/_interopDefaultLegacy(manifest);
var RoutesManifestJson__default = /*#__PURE__*/_interopDefaultLegacy(RoutesManifestJson);
var Stream__default = /*#__PURE__*/_interopDefaultLegacy(Stream);
var zlib__default = /*#__PURE__*/_interopDefaultLegacy(zlib);
var http__default = /*#__PURE__*/_interopDefaultLegacy(http);
const specialNodeHeaders = [
"age",
"authorization",
"content-length",
"content-type",
"etag",
"expires",
"from",
"host",
"if-modified-since",
"if-unmodified-since",
"last-modified",
"location",
"max-forwards",
"proxy-authorization",
"referer",
"retry-after",
"user-agent"
];
const readOnlyCloudFrontHeaders = {
"accept-encoding": true,
"content-length": true,
"if-modified-since": true,
"if-none-match": true,
"if-range": true,
"if-unmodified-since": true,
"transfer-encoding": true,
via: true
};
const HttpStatusCodes = {
202: "Accepted",
502: "Bad Gateway",
400: "Bad Request",
409: "Conflict",
100: "Continue",
201: "Created",
417: "Expectation Failed",
424: "Failed Dependency",
403: "Forbidden",
504: "Gateway Timeout",
410: "Gone",
505: "HTTP Version Not Supported",
418: "I'm a teapot",
419: "Insufficient Space on Resource",
507: "Insufficient Storage",
500: "Server Error",
411: "Length Required",
423: "Locked",
420: "Method Failure",
405: "Method Not Allowed",
301: "Moved Permanently",
302: "Moved Temporarily",
207: "Multi-Status",
300: "Multiple Choices",
511: "Network Authentication Required",
204: "No Content",
203: "Non Authoritative Information",
406: "Not Acceptable",
404: "Not Found",
501: "Not Implemented",
304: "Not Modified",
200: "OK",
206: "Partial Content",
402: "Payment Required",
308: "Permanent Redirect",
412: "Precondition Failed",
428: "Precondition Required",
102: "Processing",
407: "Proxy Authentication Required",
431: "Request Header Fields Too Large",
408: "Request Timeout",
413: "Request Entity Too Large",
414: "Request-URI Too Long",
416: "Requested Range Not Satisfiable",
205: "Reset Content",
303: "See Other",
503: "Service Unavailable",
101: "Switching Protocols",
307: "Temporary Redirect",
429: "Too Many Requests",
401: "Unauthorized",
422: "Unprocessable Entity",
415: "Unsupported Media Type",
305: "Use Proxy"
};
const toCloudFrontHeaders = (headers, headerNames, originalHeaders) => {
const result = {};
Object.entries(originalHeaders).forEach(([headerName, headerValue]) => {
result[headerName.toLowerCase()] = headerValue;
});
Object.entries(headers).forEach(([headerName, headerValue]) => {
const headerKey = headerName.toLowerCase();
headerName = headerNames[headerKey] || headerName;
if (readOnlyCloudFrontHeaders[headerKey]) {
return;
}
result[headerKey] = [];
if (headerValue instanceof Array) {
headerValue.forEach((val) => {
result[headerKey].push({
key: headerName,
value: val.toString()
});
});
} else {
result[headerKey].push({
key: headerName,
value: headerValue.toString()
});
}
});
return result;
};
const isGzipSupported = (headers) => {
let gz = false;
const ae = headers["accept-encoding"];
if (ae) {
for (let i = 0; i < ae.length; i++) {
const { value } = ae[i];
const bits = value.split(",").map((x) => x.split(";")[0].trim());
if (bits.indexOf("gzip") !== -1) {
gz = true;
}
}
}
return gz;
};
const defaultOptions = {
enableHTTPCompression: false
};
const handler$1 = (
event,
{ enableHTTPCompression, rewrittenUri } = defaultOptions
) => {
const { request: cfRequest, response: cfResponse = { headers: {} } } = event;
const response = {
headers: {}
};
const newStream = new Stream__default['default'].Readable();
const req = Object.assign(newStream, http__default['default'].IncomingMessage.prototype);
req.url = rewrittenUri || cfRequest.uri;
req.method = cfRequest.method;
req.rawHeaders = [];
req.headers = {};
req.connection = {};
if (cfRequest.querystring) {
req.url = req.url + `?` + cfRequest.querystring;
}
const headers = cfRequest.headers || {};
for (const lowercaseKey of Object.keys(headers)) {
const headerKeyValPairs = headers[lowercaseKey];
headerKeyValPairs.forEach((keyVal) => {
req.rawHeaders.push(keyVal.key);
req.rawHeaders.push(keyVal.value);
});
req.headers[lowercaseKey] = headerKeyValPairs[0].value;
}
req.getHeader = (name) => {
return req.headers[name.toLowerCase()];
};
req.getHeaders = () => {
return req.headers;
};
if (cfRequest.body && cfRequest.body.data) {
req.push(
cfRequest.body.data,
cfRequest.body.encoding ? "base64" : undefined
);
}
req.push(null);
const res = new Stream__default['default']();
res.finished = false;
Object.defineProperty(res, "statusCode", {
get() {
return response.status;
},
set(statusCode) {
response.status = statusCode;
response.statusDescription = HttpStatusCodes[statusCode];
}
});
res.headers = {};
const headerNames = {};
res.writeHead = (status, headers) => {
response.status = status;
response.statusDescription = HttpStatusCodes[status];
if (headers) {
res.headers = Object.assign(res.headers, headers);
}
return res;
};
res.write = (chunk) => {
if (!response.body) {
response.body = Buffer.from("");
}
response.body = Buffer.concat([
response.body,
Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)
]);
};
let shouldGzip = enableHTTPCompression && isGzipSupported(headers);
const responsePromise = new Promise((resolve) => {
res.end = (text) => {
if (res.finished === true) {
return;
}
res.finished = true;
if (text) res.write(text);
if (!res.statusCode) {
res.statusCode = 200;
}
if (response.body) {
response.bodyEncoding = "base64";
response.body = shouldGzip
? zlib__default['default'].gzipSync(response.body).toString("base64")
: Buffer.from(response.body).toString("base64");
}
response.headers = toCloudFrontHeaders(
res.headers,
headerNames,
cfResponse.headers
);
if (shouldGzip) {
response.headers["content-encoding"] = [
{ key: "Content-Encoding", value: "gzip" }
];
}
resolve(response);
};
});
res.setHeader = (name, value) => {
res.headers[name.toLowerCase()] = value;
headerNames[name.toLowerCase()] = name;
};
res.removeHeader = (name) => {
delete res.headers[name.toLowerCase()];
};
res.getHeader = (name) => {
return res.headers[name.toLowerCase()];
};
res.getHeaders = () => {
return res.headers;
};
res.hasHeader = (name) => {
return !!res.getHeader(name);
};
return {
req,
res,
responsePromise
};
};
handler$1.SPECIAL_NODE_HEADERS = specialNodeHeaders;
var nextAwsCloudfront = handler$1;
// Blacklisted or read-only headers in CloudFront
const ignoredHeaders = [
"connection",
"expect",
"keep-alive",
"proxy-authenticate",
"proxy-authorization",
"proxy-connection",
"trailer",
"upgrade",
"x-accel-buffering",
"x-accel-charset",
"x-accel-limit-rate",
"x-accel-redirect",
"x-cache",
"x-forwarded-proto",
"x-real-ip",
"content-length",
"host",
"transfer-encoding",
"via"
];
const ignoredHeaderPrefixes = ["x-amz-cf-", "x-amzn-", "x-edge-"];
function isIgnoredHeader(name) {
const lowerCaseName = name.toLowerCase();
for (const prefix of ignoredHeaderPrefixes) {
if (lowerCaseName.startsWith(prefix)) {
return true;
}
}
return ignoredHeaders.includes(lowerCaseName);
}
async function createExternalRewriteResponse(customRewrite, req, res, body) {
const { default: fetch } = await Promise.resolve().then(function () { return require('./index-9e574644.js'); });
// Set request headers
const reqHeaders = {};
Object.assign(reqHeaders, req.headers);
// Delete host header otherwise request may fail due to host mismatch
if (reqHeaders.hasOwnProperty("host")) {
delete reqHeaders.host;
}
let fetchResponse;
if (body) {
const decodedBody = Buffer.from(body, "base64").toString("utf8");
fetchResponse = await fetch(customRewrite, {
headers: reqHeaders,
method: req.method,
body: decodedBody,
compress: false,
redirect: "manual"
});
}
else {
fetchResponse = await fetch(customRewrite, {
headers: reqHeaders,
method: req.method,
compress: false,
redirect: "manual"
});
}
for (const [name, val] of fetchResponse.headers.entries()) {
if (!isIgnoredHeader(name)) {
res.setHeader(name, val);
}
}
res.statusCode = fetchResponse.status;
res.end(await fetchResponse.buffer());
}
/**
* Tokenize input string.
*/
function lexer(str) {
var tokens = [];
var i = 0;
while (i < str.length) {
var char = str[i];
if (char === "*" || char === "+" || char === "?") {
tokens.push({ type: "MODIFIER", index: i, value: str[i++] });
continue;
}
if (char === "\\") {
tokens.push({ type: "ESCAPED_CHAR", index: i++, value: str[i++] });
continue;
}
if (char === "{") {
tokens.push({ type: "OPEN", index: i, value: str[i++] });
continue;
}
if (char === "}") {
tokens.push({ type: "CLOSE", index: i, value: str[i++] });
continue;
}
if (char === ":") {
var name = "";
var j = i + 1;
while (j < str.length) {
var code = str.charCodeAt(j);
if (
// `0-9`
(code >= 48 && code <= 57) ||
// `A-Z`
(code >= 65 && code <= 90) ||
// `a-z`
(code >= 97 && code <= 122) ||
// `_`
code === 95) {
name += str[j++];
continue;
}
break;
}
if (!name)
throw new TypeError("Missing parameter name at " + i);
tokens.push({ type: "NAME", index: i, value: name });
i = j;
continue;
}
if (char === "(") {
var count = 1;
var pattern = "";
var j = i + 1;
if (str[j] === "?") {
throw new TypeError("Pattern cannot start with \"?\" at " + j);
}
while (j < str.length) {
if (str[j] === "\\") {
pattern += str[j++] + str[j++];
continue;
}
if (str[j] === ")") {
count--;
if (count === 0) {
j++;
break;
}
}
else if (str[j] === "(") {
count++;
if (str[j + 1] !== "?") {
throw new TypeError("Capturing groups are not allowed at " + j);
}
}
pattern += str[j++];
}
if (count)
throw new TypeError("Unbalanced pattern at " + i);
if (!pattern)
throw new TypeError("Missing pattern at " + i);
tokens.push({ type: "PATTERN", index: i, value: pattern });
i = j;
continue;
}
tokens.push({ type: "CHAR", index: i, value: str[i++] });
}
tokens.push({ type: "END", index: i, value: "" });
return tokens;
}
/**
* Parse a string for the raw tokens.
*/
function parse(str, options) {
if (options === void 0) { options = {}; }
var tokens = lexer(str);
var _a = options.prefixes, prefixes = _a === void 0 ? "./" : _a;
var defaultPattern = "[^" + escapeString(options.delimiter || "/#?") + "]+?";
var result = [];
var key = 0;
var i = 0;
var path = "";
var tryConsume = function (type) {
if (i < tokens.length && tokens[i].type === type)
return tokens[i++].value;
};
var mustConsume = function (type) {
var value = tryConsume(type);
if (value !== undefined)
return value;
var _a = tokens[i], nextType = _a.type, index = _a.index;
throw new TypeError("Unexpected " + nextType + " at " + index + ", expected " + type);
};
var consumeText = function () {
var result = "";
var value;
// tslint:disable-next-line
while ((value = tryConsume("CHAR") || tryConsume("ESCAPED_CHAR"))) {
result += value;
}
return result;
};
while (i < tokens.length) {
var char = tryConsume("CHAR");
var name = tryConsume("NAME");
var pattern = tryConsume("PATTERN");
if (name || pattern) {
var prefix = char || "";
if (prefixes.indexOf(prefix) === -1) {
path += prefix;
prefix = "";
}
if (path) {
result.push(path);
path = "";
}
result.push({
name: name || key++,
prefix: prefix,
suffix: "",
pattern: pattern || defaultPattern,
modifier: tryConsume("MODIFIER") || ""
});
continue;
}
var value = char || tryConsume("ESCAPED_CHAR");
if (value) {
path += value;
continue;
}
if (path) {
result.push(path);
path = "";
}
var open = tryConsume("OPEN");
if (open) {
var prefix = consumeText();
var name_1 = tryConsume("NAME") || "";
var pattern_1 = tryConsume("PATTERN") || "";
var suffix = consumeText();
mustConsume("CLOSE");
result.push({
name: name_1 || (pattern_1 ? key++ : ""),
pattern: name_1 && !pattern_1 ? defaultPattern : pattern_1,
prefix: prefix,
suffix: suffix,
modifier: tryConsume("MODIFIER") || ""
});
continue;
}
mustConsume("END");
}
return result;
}
/**
* Compile a string to a template function for the path.
*/
function compile(str, options) {
return tokensToFunction(parse(str, options), options);
}
/**
* Expose a method for transforming tokens into the path function.
*/
function tokensToFunction(tokens, options) {
if (options === void 0) { options = {}; }
var reFlags = flags(options);
var _a = options.encode, encode = _a === void 0 ? function (x) { return x; } : _a, _b = options.validate, validate = _b === void 0 ? true : _b;
// Compile all the tokens into regexps.
var matches = tokens.map(function (token) {
if (typeof token === "object") {
return new RegExp("^(?:" + token.pattern + ")$", reFlags);
}
});
return function (data) {
var path = "";
for (var i = 0; i < tokens.length; i++) {
var token = tokens[i];
if (typeof token === "string") {
path += token;
continue;
}
var value = data ? data[token.name] : undefined;
var optional = token.modifier === "?" || token.modifier === "*";
var repeat = token.modifier === "*" || token.modifier === "+";
if (Array.isArray(value)) {
if (!repeat) {
throw new TypeError("Expected \"" + token.name + "\" to not repeat, but got an array");
}
if (value.length === 0) {
if (optional)
continue;
throw new TypeError("Expected \"" + token.name + "\" to not be empty");
}
for (var j = 0; j < value.length; j++) {
var segment = encode(value[j], token);
if (validate && !matches[i].test(segment)) {
throw new TypeError("Expected all \"" + token.name + "\" to match \"" + token.pattern + "\", but got \"" + segment + "\"");
}
path += token.prefix + segment + token.suffix;
}
continue;
}
if (typeof value === "string" || typeof value === "number") {
var segment = encode(String(value), token);
if (validate && !matches[i].test(segment)) {
throw new TypeError("Expected \"" + token.name + "\" to match \"" + token.pattern + "\", but got \"" + segment + "\"");
}
path += token.prefix + segment + token.suffix;
continue;
}
if (optional)
continue;
var typeOfMessage = repeat ? "an array" : "a string";
throw new TypeError("Expected \"" + token.name + "\" to be " + typeOfMessage);
}
return path;
};
}
/**
* Create path match function from `path-to-regexp` spec.
*/
function match(str, options) {
var keys = [];
var re = pathToRegexp(str, keys, options);
return regexpToFunction(re, keys, options);
}
/**
* Create a path match function from `path-to-regexp` output.
*/
function regexpToFunction(re, keys, options) {
if (options === void 0) { options = {}; }
var _a = options.decode, decode = _a === void 0 ? function (x) { return x; } : _a;
return function (pathname) {
var m = re.exec(pathname);
if (!m)
return false;
var path = m[0], index = m.index;
var params = Object.create(null);
var _loop_1 = function (i) {
// tslint:disable-next-line
if (m[i] === undefined)
return "continue";
var key = keys[i - 1];
if (key.modifier === "*" || key.modifier === "+") {
params[key.name] = m[i].split(key.prefix + key.suffix).map(function (value) {
return decode(value, key);
});
}
else {
params[key.name] = decode(m[i], key);
}
};
for (var i = 1; i < m.length; i++) {
_loop_1(i);
}
return { path: path, index: index, params: params };
};
}
/**
* Escape a regular expression string.
*/
function escapeString(str) {
return str.replace(/([.+*?=^!:${}()[\]|/\\])/g, "\\$1");
}
/**
* Get the flags for a regexp from the options.
*/
function flags(options) {
return options && options.sensitive ? "" : "i";
}
/**
* Pull out keys from a regexp.
*/
function regexpToRegexp(path, keys) {
if (!keys)
return path;
var groupsRegex = /\((?:\?<(.*?)>)?(?!\?)/g;
var index = 0;
var execResult = groupsRegex.exec(path.source);
while (execResult) {
keys.push({
// Use parenthesized substring match if available, index otherwise
name: execResult[1] || index++,
prefix: "",
suffix: "",
modifier: "",
pattern: ""
});
execResult = groupsRegex.exec(path.source);
}
return path;
}
/**
* Transform an array into a regexp.
*/
function arrayToRegexp(paths, keys, options) {
var parts = paths.map(function (path) { return pathToRegexp(path, keys, options).source; });
return new RegExp("(?:" + parts.join("|") + ")", flags(options));
}
/**
* Create a path regexp from string input.
*/
function stringToRegexp(path, keys, options) {
return tokensToRegexp(parse(path, options), keys, options);
}
/**
* Expose a function for taking tokens and returning a RegExp.
*/
function tokensToRegexp(tokens, keys, options) {
if (options === void 0) { options = {}; }
var _a = options.strict, strict = _a === void 0 ? false : _a, _b = options.start, start = _b === void 0 ? true : _b, _c = options.end, end = _c === void 0 ? true : _c, _d = options.encode, encode = _d === void 0 ? function (x) { return x; } : _d;
var endsWith = "[" + escapeString(options.endsWith || "") + "]|$";
var delimiter = "[" + escapeString(options.delimiter || "/#?") + "]";
var route = start ? "^" : "";
// Iterate over the tokens and create our regexp string.
for (var _i = 0, tokens_1 = tokens; _i < tokens_1.length; _i++) {
var token = tokens_1[_i];
if (typeof token === "string") {
route += escapeString(encode(token));
}
else {
var prefix = escapeString(encode(token.prefix));
var suffix = escapeString(encode(token.suffix));
if (token.pattern) {
if (keys)
keys.push(token);
if (prefix || suffix) {
if (token.modifier === "+" || token.modifier === "*") {
var mod = token.modifier === "*" ? "?" : "";
route += "(?:" + prefix + "((?:" + token.pattern + ")(?:" + suffix + prefix + "(?:" + token.pattern + "))*)" + suffix + ")" + mod;
}
else {
route += "(?:" + prefix + "(" + token.pattern + ")" + suffix + ")" + token.modifier;
}
}
else {
route += "(" + token.pattern + ")" + token.modifier;
}
}
else {
route += "(?:" + prefix + suffix + ")" + token.modifier;
}
}
}
if (end) {
if (!strict)
route += delimiter + "?";
route += !options.endsWith ? "$" : "(?=" + endsWith + ")";
}
else {
var endToken = tokens[tokens.length - 1];
var isEndDelimited = typeof endToken === "string"
? delimiter.indexOf(endToken[endToken.length - 1]) > -1
: // tslint:disable-next-line
endToken === undefined;
if (!strict) {
route += "(?:" + delimiter + "(?=" + endsWith + "))?";
}
if (!isEndDelimited) {
route += "(?=" + delimiter + "|" + endsWith + ")";
}
}
return new RegExp(route, flags(options));
}
/**
* Normalize the given path string, returning a regular expression.
*
* An empty array can be passed in for the keys, which will hold the
* placeholder key descriptions. For example, using `/user/:id`, `keys` will
* contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.
*/
function pathToRegexp(path, keys, options) {
if (path instanceof RegExp)
return regexpToRegexp(path, keys);
if (Array.isArray(path))
return arrayToRegexp(path, keys, options);
return stringToRegexp(path, keys, options);
}
const findDomainLocale = (req, manifest) => {
var _a;
const domains = (_a = manifest.i18n) === null || _a === void 0 ? void 0 : _a.domains;
if (domains) {
const hostHeaders = req.headers.host;
if (hostHeaders && hostHeaders.length > 0) {
const host = hostHeaders[0].value.split(":")[0];
const matchedDomain = domains.find((d) => d.domain === host);
if (matchedDomain) {
return matchedDomain.defaultLocale;
}
}
}
return null;
};
function addDefaultLocaleToPath(path, routesManifest, forceLocale = null) {
if (routesManifest.i18n) {
const defaultLocale = forceLocale !== null && forceLocale !== void 0 ? forceLocale : routesManifest.i18n.defaultLocale;
const locales = routesManifest.i18n.locales;
const basePath = path.startsWith(routesManifest.basePath)
? routesManifest.basePath
: "";
// If prefixed with a locale, return that path with normalized locale
const pathLowerCase = path.toLowerCase();
for (const locale of locales) {
if (pathLowerCase === `${basePath}/${locale}`.toLowerCase() ||
pathLowerCase.startsWith(`${basePath}/${locale}/`.toLowerCase())) {
return path.replace(new RegExp(`${basePath}/${locale}`, "i"), `${basePath}/${forceLocale !== null && forceLocale !== void 0 ? forceLocale : locale}`);
}
}
// Otherwise, prefix with default locale
if (path === "/" || path === `${basePath}`) {
return `${basePath}/${defaultLocale}`;
}
else {
return path.replace(`${basePath}/`, `${basePath}/${defaultLocale}/`);
}
}
return path;
}
function dropLocaleFromPath(path, routesManifest) {
if (routesManifest.i18n) {
const pathLowerCase = path.toLowerCase();
const locales = routesManifest.i18n.locales;
// If prefixed with a locale, return path without
for (const locale of locales) {
const prefixLowerCase = `/${locale.toLowerCase()}`;
if (pathLowerCase === prefixLowerCase) {
return "/";
}
if (pathLowerCase.startsWith(`${prefixLowerCase}/`)) {
return `${pathLowerCase.slice(prefixLowerCase.length)}`;
}
}
}
return path;
}
function getLocalePrefixFromUri(uri, routesManifest) {
if (routesManifest.basePath && uri.startsWith(routesManifest.basePath)) {
uri = uri.slice(routesManifest.basePath.length);
}
if (routesManifest.i18n) {
const uriLowerCase = uri.toLowerCase();
for (const locale of routesManifest.i18n.locales) {
const localeLowerCase = locale.toLowerCase();
if (uriLowerCase === `/${localeLowerCase}` ||
uriLowerCase.startsWith(`/${localeLowerCase}/`)) {
return `/${locale}`;
}
}
return `/${routesManifest.i18n.defaultLocale}`;
}
return "";
}
/**
Provides matching capabilities to support custom redirects, rewrites, and headers.
*/
/**
* Match the given path against a source path.
* @param path
* @param source
*/
function matchPath(path, source) {
const matcher = match(source, { decode: decodeURIComponent });
return matcher(path);
}
/**
* Compile a destination for redirects or rewrites.
* @param destination
* @param params
*/
function compileDestination(destination, params) {
try {
const destinationLowerCase = destination.toLowerCase();
if (destinationLowerCase.startsWith("https://") ||
destinationLowerCase.startsWith("http://")) {
// Handle external URLs
const { origin, pathname } = new URL(destination);
const toPath = compile(pathname, { encode: encodeURIComponent });
const compiledDestination = `${origin}${toPath(params)}`;
// Remove trailing slash if original destination didn't have it
if (!destination.endsWith("/") && compiledDestination.endsWith("/")) {
return compiledDestination.slice(0, -1);
}
else {
return compiledDestination;
}
}
else {
// Handle all other paths. Escape all ? in case of query parameters
const escapedDestination = destination.replace(/\?/g, "\\?");
const toPath = compile(escapedDestination, {
encode: encodeURIComponent
});
return toPath(params);
}
}
catch (error) {
console.error(`Could not compile destination ${destination}, returning null instead. Error: ${error}`);
return null;
}
}
const matchDynamic = (uri, routes) => {
for (const { file, regex } of routes) {
const re = new RegExp(regex, "i");
if (re.test(uri)) {
return file;
}
}
};
const matchDynamicRoute = (uri, routes) => {
for (const { route, regex } of routes) {
const re = new RegExp(regex, "i");
if (re.test(uri)) {
return route;
}
}
};
const getCustomHeaders = (uri, routesManifest) => {
const localized = addDefaultLocaleToPath(uri, routesManifest);
const headers = {};
for (const headerData of routesManifest.headers) {
if (!matchPath(localized, headerData.source)) {
continue;
}
for (const { key, value } of headerData.headers) {
if (key) {
// Header overriding behavior as per:
// https://nextjs.org/docs/api-reference/next.config.js/headers
headers[key.toLowerCase()] = [{ key, value }];
}
}
}
return headers;
};
const setCustomHeaders = (event, routesManifest) => {
var _a;
const [uri] = ((_a = event.req.url) !== null && _a !== void 0 ? _a : "").split("?");
const headers = getCustomHeaders(uri, routesManifest);
for (const [{ key, value }] of Object.values(headers)) {
if (key) {
event.res.setHeader(key, value);
}
}
};
const setHeadersFromRoute = (event, route) => {
var _a;
for (const [key, headers] of Object.entries(route.headers || [])) {
const keys = headers.map(({ key }) => key);
const values = headers.map(({ value }) => value).join(";");
if (values) {
event.res.setHeader((_a = keys[0]) !== null && _a !== void 0 ? _a : key, values);
}
}
};
const notFound = (event) => {
event.res.statusCode = 404;
event.res.statusMessage = "Not Found";
event.res.end("Not Found");
};
const redirect = (event, route) => {
setHeadersFromRoute(event, route);
event.res.statusCode = route.status;
event.res.statusMessage = route.statusDescription;
event.res.end();
};
const toRequest = (event) => {
var _a;
const [uri, querystring] = ((_a = event.req.url) !== null && _a !== void 0 ? _a : "").split("?");
const headers = {};
for (const [key, value] of Object.entries(event.req.headers)) {
if (value && Array.isArray(value)) {
headers[key.toLowerCase()] = value.map((value) => ({ key, value }));
}
else if (value) {
headers[key.toLowerCase()] = [{ key, value }];
}
}
return {
headers,
querystring,
uri
};
};
const normalise = (uri, routesManifest) => {
const { basePath, i18n } = routesManifest;
if (basePath) {
if (uri.startsWith(basePath)) {
uri = uri.slice(basePath.length);
}
else {
// basePath set but URI does not start with basePath, return 404
if (i18n === null || i18n === void 0 ? void 0 : i18n.defaultLocale) {
return `/${i18n.defaultLocale}/404`;
}
else {
return "/404";
}
}
}
// Remove trailing slash for all paths
if (uri.endsWith("/")) {
uri = uri.slice(0, -1);
}
// Empty path should be normalised to "/" as there is no Next.js route for ""
return uri === "" ? "/" : uri;
};
const staticNotFound = (uri, manifest, routesManifest) => {
const localePrefix = getLocalePrefixFromUri(uri, routesManifest);
const notFoundUri = `${localePrefix}/404`;
const static404 = manifest.pages.html.nonDynamic[notFoundUri] ||
manifest.pages.ssg.nonDynamic[notFoundUri];
if (static404) {
return {
isData: false,
isStatic: true,
file: `pages${notFoundUri}.html`,
statusCode: 404
};
}
};
const notFoundPage = (uri, manifest, routesManifest) => {
return (staticNotFound(uri, manifest, routesManifest) || {
isData: false,
isRender: true,
page: "pages/_error.js",
statusCode: 404
});
};
const pageHtml = (localeUri) => {
if (localeUri == "/") {
return "pages/index.html";
}
return `pages${localeUri}.html`;
};
const handlePageReq = (req, uri, manifest, routesManifest, isPreview, isRewrite) => {
var _a, _b;
const { pages } = manifest;
const localeUri = normalise(addDefaultLocaleToPath(uri, routesManifest, findDomainLocale(req, routesManifest)), routesManifest);
if (pages.html.nonDynamic[localeUri]) {
const nonLocaleUri = dropLocaleFromPath(localeUri, routesManifest);
const statusCode = nonLocaleUri === "/404" ? 404 : nonLocaleUri === "/500" ? 500 : undefined;
return {
isData: false,
isStatic: true,
file: pages.html.nonDynamic[localeUri],
statusCode
};
}
if (pages.ssg.nonDynamic[localeUri] && !isPreview) {
const ssg = pages.ssg.nonDynamic[localeUri];
const route = (_a = ssg.srcRoute) !== null && _a !== void 0 ? _a : localeUri;
const nonLocaleUri = dropLocaleFromPath(localeUri, routesManifest);
const statusCode = nonLocaleUri === "/404" ? 404 : nonLocaleUri === "/500" ? 500 : undefined;
return {
isData: false,
isStatic: true,
file: pageHtml(localeUri),
// page JS path is from SSR entries in manifest
page: pages.ssr.nonDynamic[route] || pages.ssr.dynamic[route],
revalidate: ssg.initialRevalidateSeconds,
statusCode
};
}
if (((_b = pages.ssg.notFound) !== null && _b !== void 0 ? _b : {})[localeUri] && !isPreview) {
return notFoundPage(uri, manifest, routesManifest);
}
if (pages.ssr.nonDynamic[localeUri]) {
return {
isData: false,
isRender: true,
page: pages.ssr.nonDynamic[localeUri]
};
}
const rewrite = !isRewrite && getRewritePath(req, uri, routesManifest, manifest);
if (rewrite) {
const [path, querystring] = rewrite.split("?");
if (isExternalRewrite(path)) {
return {
isExternal: true,
path,
querystring
};
}
const route = handlePageReq(req, path, manifest, routesManifest, isPreview, true);
return {
...route,
querystring
};
}
const dynamic = matchDynamicRoute(localeUri, pages.dynamic);
const dynamicSSG = dynamic && pages.ssg.dynamic[dynamic];
if (dynamicSSG && !isPreview) {
return {
isData: false,
isStatic: true,
file: pageHtml(localeUri),
page: dynamic ? pages.ssr.dynamic[dynamic] : undefined,
fallback: dynamicSSG.fallback
};
}
const dynamicSSR = dynamic && pages.ssr.dynamic[dynamic];
if (dynamicSSR) {
return {
isData: false,
isRender: true,
page: dynamicSSR
};
}
const dynamicHTML = dynamic && pages.html.dynamic[dynamic];
if (dynamicHTML) {
return {
isData: false,
isStatic: true,
file: dynamicHTML
};
}
return notFoundPage(uri, manifest, routesManifest);
};
/**
* Get the rewrite of the given path, if it exists.
* @param uri
* @param pageManifest
* @param routesManifest
*/
function getRewritePath(req, uri, routesManifest, pageManifest) {
const path = addDefaultLocaleToPath(uri, routesManifest, findDomainLocale(req, routesManifest));
const rewrites = routesManifest.rewrites;
for (const rewrite of rewrites) {
const match = matchPath(path, rewrite.source);
if (!match) {
continue;
}
const params = match.params;
const destination = compileDestination(rewrite.destination, params);
if (!destination) {
return;
}
// No-op rewrite support for pages: skip to next rewrite if path does not map to existing non-dynamic and dynamic routes
if (pageManifest && path === destination) {
const url = handlePageReq(req, destination, pageManifest, routesManifest, false, true);
if (url.statusCode === 404) {
continue;
}
}
// Pass unused params to destination
// except nextInternalLocale param since it's already in path prefix
const querystring = Object.keys(params)
.filter((key) => key !== "nextInternalLocale")
.filter((key) => !rewrite.destination.endsWith(`:${key}`) &&
!rewrite.destination.includes(`:${key}/`))
.map((key) => {
const param = params[key];
if (typeof param === "string") {
return `${key}=${param}`;
}
else {
return param.map((val) => `${key}=${val}`).join("&");
}
})
.filter((key) => key)
.join("&");
if (querystring) {
const separator = destination.includes("?") ? "&" : "?";
return `${destination}${separator}${querystring}`;
}
return destination;
}
}
function isExternalRewrite(customRewrite) {
return (customRewrite.startsWith("http://") || customRewrite.startsWith("https://"));
}
const handleApiReq = (req, uri, manifest, routesManifest, isRewrite) => {
const { apis } = manifest;
const normalisedUri = normalise(uri, routesManifest);
const nonDynamic = apis.nonDynamic[normalisedUri];
if (nonDynamic) {
return {
isApi: true,
page: nonDynamic
};
}
const rewrite = !isRewrite && getRewritePath(req, uri, routesManifest);
if (rewrite) {
// Rewrites include locales even for api routes
const apiRewrite = dropLocaleFromPath(rewrite, routesManifest);
const [path, querystring] = apiRewrite.split("?");
if (isExternalRewrite(path)) {
return {
isExternal: true,
path,
querystring
};
}
const route = handleApiReq(req, path, manifest, routesManifest, true);
if (route) {
return {
...route,
querystring
};
}
return route;
}
const dynamic = matchDynamic(normalisedUri, apis.dynamic);
if (dynamic) {
return {
isApi: true,
page: dynamic
};
}
};
function getUnauthenticatedResponse(authorizationHeaders, authentication) {
var _a;
if (authentication && authentication.username && authentication.password) {
const validAuth = "Basic " +
Buffer.from(authentication.username + ":" + authentication.password).toString("base64");
if (!authorizationHeaders || ((_a = authorizationHeaders[0]) === null || _a === void 0 ? void 0 : _a.value) !== validAuth) {
return {
isUnauthorized: true,
status: 401,
statusDescription: "Unauthorized",
body: "Unauthorized",
headers: {
"www-authenticate": [{ key: "WWW-Authenticate", value: "Basic" }]
}
};
}
}
}
/**
* Create a redirect response with the given status code
* @param uri
* @param querystring
* @param statusCode
*/
function createRedirectResponse(uri, querystring, statusCode) {
let location;
// Properly join query strings
if (querystring) {
const [uriPath, uriQuery] = uri.split("?");
location = `${uriPath}?${querystring}${uriQuery ? `&${uriQuery}` : ""}`;
}
else {
location = uri;
}
const status = statusCode;
const statusDescription = http.STATUS_CODES[status];
const refresh = statusCode === 308
? [
// Required for IE11 compatibility
{
key: "Refresh",
value: `0;url=${location}`
}
]
: [];
const cacheControl = [
{
key: "Cache-Control",
value: "s-maxage=0"
}
];
return {
isRedirect: true,
status: status,
statusDescription: statusDescription || "",
headers: {
location: [
{
key: "Location",
value: location
}
],
refresh: refresh,
"cache-control": cacheControl
}
};
}
/**
* Get a domain redirect such as redirecting www to non-www domain.
* @param request
* @param manifest
*/
function getDomainRedirectPath(request, manifest) {
const hostHeaders = request.headers["host"];
if (hostHeaders && hostHeaders.length > 0) {
const host = hostHeaders[0].value;
const domainRedirects = manifest.domainRedirects;
if (domainRedirects && domainRedirects[host]) {
return `${domainRedirects[host]}${request.uri}`;
}
}
}
/**
* Get the redirect of the given path, if it exists.
* @param path
* @param manifest
*/
function getRedirectPath(request, routesManifest) {
var _a;
const path = addDefaultLocaleToPath(request.uri, routesManifest);
const redirects = (_a = routesManifest.redirects) !== null && _a !== void 0 ? _a : [];
for (const redirect of redirects) {
const match = matchPath(path, redirect.source);
if (match) {
const compiledDestination = compileDestination(redirect.destination, match.params);
if (!compiledDestination) {
return null;
}
return {
path: compiledDestination,
statusCode: redirect.statusCode
};
}
}
return null;
}
const handleAuth = (req, manifest) => {
const { headers } = req;
return getUnauthenticatedResponse(headers.authorization, manifest.authentication);
};
const handleCustomRedirects = (req, routesManifest) => {
const redirect = getRedirectPath(req, routesManifest);
if (redirect) {
const { path, statusCode } = redirect;
return createRedirectResponse(path, req.querystring, statusCode);
}
};
const handleDomainRedirects = (req, manifest) => {
const path = getDomainRedirectPath(req, manifest);
if (path) {
return createRedirectResponse(path, req.querystring, 308);
}
};
/*
* Routes:
* - auth
* - redirects
* - api routes
* - rewrites (external and api)
*/
const routeApi = (req, manifest, routesManifest) => {
const auth = handleAuth(req, manifest);
if (auth) {
return auth;
}
const redirect = handleDomainRedirects(req, manifest) ||
handleCustomRedirects(req, routesManifest);
if (redirect) {
return redirect;
}
return handleApiReq(req, req.uri, manifest, routesManifest);
};
const unauthorized = (event, route) => {
setHeadersFromRoute(event, route);
event.res.statusCode = route.status;
event.res.statusMessage = route.statusDescription;
event.res.end();
};
/*
* Handles api routes.
*
* Returns ExternalRoute for handling in the caller.
*
* If return is void, the response has already been generated in
* event.res/event.responsePromise which the caller should wait on.
*/
const handleApi = async (event, manifest, routesManifest, getPage) => {
const request = toRequest(event);
const route = routeApi(request, manifest, routesManifest);
if (!route) {
return notFound(event);
}
if (route.querystring) {
event.req.url = `${event.req.url}${request.querystring ? "&" : "?"}${route.querystring}`;
}
if (route.isApi) {
const { page } = route;
setCustomHeaders(event, routesManifest);
getPage(page).default(event.req, event.res);
return;
}
if (route.isRedirect) {
return redirect(event, route);
}
if (route.isUnauthorized) {
return unauthorized(event, route);
}
// No if lets typescript check this is ExternalRoute
return route;
};
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var module = { exports: {} };
return fn(module, module.exports), module.exports;
}
createCommonjsModule(function (module, exports) {
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.SERVER_DIRECTORY = exports.PAGES_MANIFEST = exports.SERVER_PROPS_ID = exports.CLIENT_STATIC_FILES_RUNTIME_WEBPACK = exports.PERMANENT_REDIRECT_STATUS = exports.SERVER_FILES_MANIFEST = exports.STATIC_PROPS_ID = exports.BUILD_MANIFEST = exports.BLOCKED_PAGES = exports.STATIC_STATUS_PAGES = exports.PRERENDER_MANIFEST = exports.DEV_CLIENT_PAGES_MANIFEST = exports.OPTIMIZED_FONT_PROVIDERS = exports.TEMPORARY_REDIRECT_STATUS = exports.SERVERLESS_DIRECTORY = exports.EXPORT_MARKER = exports.GOOGLE_FONT_PROVIDER = exports.PHASE_PRODUCTION_BUILD = exports.CLIENT_STATIC_FILES_RUNTIME_MAIN = exports.BUILD_ID_FILE = exports.CONFIG_FILE = exports.CLIENT_STATIC_FILES_RUNTIME = exports.PHASE_PRODUCTION_SERVER = exports.EXPORT_DETAIL = exports.IMAGES_MANIFEST = exports.CLIENT_STATIC_FILES_RUNTIME_AMP = exports.CLIENT_PUBLIC_FILES_PATH = exports.CLIENT_STATIC_FILES_RUNTIME_POLYFILLS_SYMBOL = exports.STRING_LITERAL_DROP_BUNDLE = exports.TRACE_OUTPUT_VERSION = exports.CLIENT_STATIC_FILES_RUNTIME_REACT_REFRESH = exports.FONT_MANIFEST = exports.REACT_LOADABLE_MANIFEST = exports.ROUTES_MANIFEST = exports.CLIENT_STATIC_FILES_PATH = exports.BODY_RENDER_TARGET = exports.PHASE_EXPORT = exports.PHASE_DEVELOPMENT_SERVER = void 0;
const PHASE_EXPORT = 'phase-export';
exports.PHASE_EXPORT = PHASE_EXPORT;
const PHASE_PRODUCTION_BUILD = 'phase-production-build';
exports.PHASE_PRODUCTION_BUILD = PHASE_PRODUCTION_BUILD;
const PHASE_PRODUCTION_SERVER = 'phase-production-server';
exports.PHASE_PRODUCTION_SERVER = PHASE_PRODUCTION_SERVER;
const PHASE_DEVELOPMENT_SERVER = 'phase-development-server';
exports.PHASE_DEVELOPMENT_SERVER = PHASE_DEVELOPMENT_SERVER;
const PAGES_MANIFEST = 'pages-manifest.json';
exports.PAGES_MANIFEST = PAGES_MANIFEST;
const BUILD_MANIFEST = 'build-manifest.json';
exports.BUILD_MANIFEST = BUILD_MANIFEST;
const EXPORT_MARKER = 'export-marker.json';
exports.EXPORT_MARKER = EXPORT_MARKER;
const EXPORT_DETAIL = 'export-detail.json';
exports.EXPORT_DETAIL = EXPORT_DETAIL;
const PRERENDER_MANIFEST = 'prerender-manifest.json';
exports.PRERENDER_MANIFEST = PRERENDER_MANIFEST;
const ROUTES_MANIFEST = 'routes-manifest.json';
exports.ROUTES_MANIFEST = ROUTES_MANIFEST;
const IMAGES_MANIFEST = 'images-manifest.json';
exports.IMAGES_MANIFEST = IMAGES_MANIFEST;
const SERVER_FILES_MANIFEST = 'required-server-files.json';
exports.SERVER_FILES_MANIFEST = SERVER_FILES_MANIFEST;
const DEV_CLIENT_PAGES_MANIFEST = '_devPagesManifest.json';
exports.DEV_CLIENT_PAGES_MANIFEST = DEV_CLIENT_PAGES_MANIFEST;
const REACT_LOADABLE_MANIFEST = 'react-loadable-manifest.json';
exports.REACT_LOADABLE_MANIFEST = REACT_LOADABLE_MANIFEST;
const FONT_MANIFEST = 'font-manifest.json';
exports.FONT_MANIFEST = FONT_MANIFEST;
const SERVER_DIRECTORY = 'server';
exports.SERVER_DIRECTORY = SERVER_DIRECTORY;
const SERVERLESS_DIRECTORY = 'serverless';
exports.SERVERLESS_DIRECTORY = SERVERLESS_DIRECTORY;
const CONFIG_FILE = 'next.config.js';
exports.CONFIG_FILE = CONFIG_FILE;
const BUILD_ID_FILE = 'BUILD_ID';
exports.BUILD_ID_FILE = BUILD_ID_FILE;
const BLOCKED_PAGES = [
'/_document',
'/_app',
'/_error'
];
exports.BLOCKED_PAGES = BLOCKED_PAGES;
const CLIENT_PUBLIC_FILES_PATH = 'public';
exports.CLIENT_PUBLIC_FILES_PATH = CLIENT_PUBLIC_FILES_PATH;
const CLIENT_STATIC_FILES_PATH = 'static';
exports.CLIENT_STATIC_FILES_PATH = CLIENT_STATIC_FILES_PATH;
const CLIENT_STATIC_FILES_RUNTIME = 'runtime';
exports.CLIENT_STATIC_FILES_RUNTIME = CLIENT_STATIC_FILES_RUNTIME;
const BODY_RENDER_TARGET = '__NEXT_BODY_RENDER_TARGET__';
exports.BODY_RENDER_TARGET = BODY_RENDER_TARGET;
const STRING_LITERAL_DROP_BUNDLE = '__NEXT_DROP_CLIENT_FILE__';
exports.STRING_LITERAL_DROP_BUNDLE = STRING_LITERAL_DROP_BUNDLE;
const CLIENT_STATIC_FILES_RUNTIME_MAIN = `main`;
exports.CLIENT_STATIC_FILES_RUNTIME_MAIN = CLIENT_STATIC_FILES_RUNTIME_MAIN;
const CLIENT_STATIC_FILES_RUNTIME_REACT_REFRESH = `react-refresh`;
exports.CLIENT_STATIC_FILES_RUNTIME_REACT_REFRESH = CLIENT_STATIC_FILES_RUNTIME_REACT_REFRESH;
const CLIENT_STATIC_FILES_RUNTIME_AMP = `amp`;
exports.CLIENT_STATIC_FILES_RUNTIME_AMP = CLIENT_STATIC_FILES_RUNTIME_AMP;
const CLIENT_STATIC_FILES_RUNTIME_WEBPACK = `webpack`;
exports.CLIENT_STATIC_FILES_RUNTIME_WEBPACK = CLIENT_STATIC_FILES_RUNTIME_WEBPACK;
const CLIENT_STATIC_FILES_RUNTIME_POLYFILLS_SYMBOL = Symbol(`polyfills`);
exports.CLIENT_STATIC_FILES_RUNTIME_POLYFILLS_SYMBOL = CLIENT_STATIC_FILES_RUNTIME_POLYFILLS_SYMBOL;
const TEMPORARY_REDIRECT_STATUS = 307;
exports.TEMPORARY_REDIRECT_STATUS = TEMPORARY_REDIRECT_STATUS;
const PERMANENT_REDIRECT_STATUS = 308;
exports.PERMANENT_REDIRECT_STATUS = PERMANENT_REDIRECT_STATUS;
const STATIC_PROPS_ID = '__N_SSG';
exports.STATIC_PROPS_ID = STATIC_PROPS_ID;
const SERVER_PROPS_ID = '__N_SSP';
exports.SERVER_PROPS_ID = SERVER_PROPS_ID;
const GOOGLE_FONT_PROVIDER = 'https://fonts.googleapis.com/css';
exports.GOOGLE_FONT_PROVIDER = GOOGLE_FONT_PROVIDER;
const OPTIMIZED_FONT_PROVIDERS = [
{
url: GOOGLE_FONT_PROVIDER,
preconnect: 'https://fonts.gstatic.com'
},
{
url: 'https://use.typekit.net',
preconnect: 'https://use.typekit.net'
},
];
exports.OPTIMIZED_FONT_PROVIDERS = OPTIMIZED_FONT_PROVIDERS;
const STATIC_STATUS_PAGES = [
'/500'
];
exports.STATIC_STATUS_PAGES = STATIC_STATUS_PAGES;
const TRACE_OUTPUT_VERSION = 1;
exports.TRACE_OUTPUT_VERSION = TRACE_OUTPUT_VERSION;
});
_interopRequireDefault(esm);
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
function setNextjsSiteEnvironment() {
try {
// environment will get replaced by an object of environment key-value pairs
const environment = "{{ _SST_NEXTJS_SITE_ENVIRONMENT_ }}";
// @ts-ignore
process.env = { ...process.env, ...environment };
}
catch (e) {
console.log("Failed to set SST NextjsSite environment.");
console.log(e);
}
}
const blacklistedHeaders = [
"connection",
"expect",
"keep-alive",
"proxy-authenticate",
"proxy-authorization",
"proxy-connection",
"trailer",
"upgrade",
"x-accel-buffering",
"x-accel-charset",
"x-accel-limit-rate",
"x-accel-redirect",
"x-cache",
"x-forwarded-proto",
"x-real-ip"
];
const blacklistedHeaderPrefixes = ["x-amz-cf-", "x-amzn-", "x-edge-"];
function isBlacklistedHeader(name) {
const lowerCaseName = name.toLowerCase();
for (const prefix of blacklistedHeaderPrefixes) {
if (lowerCaseName.startsWith(prefix)) {
return true;
}
}
return blacklistedHeaders.includes(lowerCaseName);
}
function removeBlacklistedHeaders(headers) {
for (const header in headers) {
if (isBlacklistedHeader(header)) {
delete headers[header];
}
}
}
// @ts-ignore
const handler = async (event) => {
var _a;
// SST set NextjsSite environment because Lambda@Edge does not support
// environment variables
setNextjsSiteEnvironment();
const request = event.Records[0].cf.request;
const routesManifest = RoutesManifestJson__default['default'];
const buildManifest = manifest__default['default'];
const { req, res, responsePromise } = nextAwsCloudfront(event.Records[0].cf, {
enableHTTPCompression: buildManifest.enableHTTPCompression
});
const external = await handleApi({ req, res, responsePromise }, buildManifest, routesManifest, (pagePath) => require(`./${pagePath}`));
if (external) {
const { path } = external;
await createExternalRewriteResponse(path, req, res, (_a = request.body) === null || _a === void 0 ? void 0 : _a.data);
}
const response = await responsePromise;
if (response.headers) {
removeBlacklistedHeaders(response.headers);
}
return response;
};
exports.handler = handler;