276 lines
12 KiB
JavaScript
276 lines
12 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.clearModuleContext = clearModuleContext;
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exports.getModuleContext = getModuleContext;
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var _asyncHooks = require("async_hooks");
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var _middleware = require("next/dist/compiled/@next/react-dev-overlay/dist/middleware");
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var _constants = require("../../../shared/lib/constants");
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var _edgeRuntime = require("next/dist/compiled/edge-runtime");
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var _fs = require("fs");
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var _utils = require("../utils");
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var _pick = require("../../../lib/pick");
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var _fetchInlineAssets = require("./fetch-inline-assets");
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const WEBPACK_HASH_REGEX = /__webpack_require__\.h = function\(\) \{ return "[0-9a-f]+"; \}/g;
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/**
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* A Map of cached module contexts indexed by the module name. It allows
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* to have a different cache scoped per module name or depending on the
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* provided module key on creation.
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*/ const moduleContexts = new Map();
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function clearModuleContext(path, content) {
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for (const [key, cache] of moduleContexts){
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var ref;
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const prev = (ref = cache == null ? void 0 : cache.paths.get(path)) == null ? void 0 : ref.replace(WEBPACK_HASH_REGEX, "");
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if (typeof prev !== "undefined" && prev !== content.toString().replace(WEBPACK_HASH_REGEX, "")) {
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moduleContexts.delete(key);
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}
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}
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}
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async function loadWasm(wasm) {
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const modules = {};
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await Promise.all(wasm.map(async (binding)=>{
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const module = await WebAssembly.compile(await _fs.promises.readFile(binding.filePath));
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modules[binding.name] = module;
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}));
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return modules;
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}
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function buildEnvironmentVariablesFrom(keys) {
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const pairs = keys.map((key)=>[
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key,
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process.env[key]
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]);
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const env = Object.fromEntries(pairs);
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env.NEXT_RUNTIME = "edge";
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return env;
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}
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function throwUnsupportedAPIError(name) {
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const error = new Error(`A Node.js API is used (${name}) which is not supported in the Edge Runtime.
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Learn more: https://nextjs.org/docs/api-reference/edge-runtime`);
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(0, _middleware).decorateServerError(error, _constants.COMPILER_NAMES.edgeServer);
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throw error;
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}
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function createProcessPolyfill(options) {
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const env = buildEnvironmentVariablesFrom(options.env);
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const processPolyfill = {
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env
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};
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const overridenValue = {};
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for (const key of Object.keys(process)){
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if (key === "env") continue;
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Object.defineProperty(processPolyfill, key, {
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get () {
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if (overridenValue[key]) {
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return overridenValue[key];
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}
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if (typeof process[key] === "function") {
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return ()=>throwUnsupportedAPIError(`process.${key}`);
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}
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return undefined;
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},
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set (value) {
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overridenValue[key] = value;
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},
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enumerable: false
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});
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}
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return processPolyfill;
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}
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function addStub(context, name) {
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Object.defineProperty(context, name, {
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get () {
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return function() {
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throwUnsupportedAPIError(name);
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};
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},
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enumerable: false
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});
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}
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function getDecorateUnhandledError(runtime) {
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const EdgeRuntimeError = runtime.evaluate(`Error`);
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return (error)=>{
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if (error instanceof EdgeRuntimeError) {
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(0, _middleware).decorateServerError(error, _constants.COMPILER_NAMES.edgeServer);
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}
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};
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}
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function getDecorateUnhandledRejection(runtime) {
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const EdgeRuntimeError = runtime.evaluate(`Error`);
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return (rejected)=>{
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if (rejected.reason instanceof EdgeRuntimeError) {
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(0, _middleware).decorateServerError(rejected.reason, _constants.COMPILER_NAMES.edgeServer);
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}
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};
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}
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/**
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* Create a module cache specific for the provided parameters. It includes
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* a runtime context, require cache and paths cache.
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*/ async function createModuleContext(options) {
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const warnedEvals = new Set();
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const warnedWasmCodegens = new Set();
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const wasm = await loadWasm(options.edgeFunctionEntry.wasm ?? []);
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const runtime = new _edgeRuntime.EdgeRuntime({
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codeGeneration: process.env.NODE_ENV !== "production" ? {
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strings: true,
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wasm: true
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} : undefined,
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extend: (context)=>{
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context.process = createProcessPolyfill(options);
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context.__next_eval__ = function __next_eval__(fn) {
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const key = fn.toString();
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if (!warnedEvals.has(key)) {
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const warning = (0, _middleware).getServerError(new Error(`Dynamic Code Evaluation (e. g. 'eval', 'new Function') not allowed in Edge Runtime
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Learn More: https://nextjs.org/docs/messages/edge-dynamic-code-evaluation`), _constants.COMPILER_NAMES.edgeServer);
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warning.name = "DynamicCodeEvaluationWarning";
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Error.captureStackTrace(warning, __next_eval__);
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warnedEvals.add(key);
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options.onWarning(warning);
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}
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return fn();
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};
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context.__next_webassembly_compile__ = function __next_webassembly_compile__(fn) {
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const key = fn.toString();
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if (!warnedWasmCodegens.has(key)) {
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const warning = (0, _middleware).getServerError(new Error(`Dynamic WASM code generation (e. g. 'WebAssembly.compile') not allowed in Edge Runtime.
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Learn More: https://nextjs.org/docs/messages/edge-dynamic-code-evaluation`), _constants.COMPILER_NAMES.edgeServer);
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warning.name = "DynamicWasmCodeGenerationWarning";
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Error.captureStackTrace(warning, __next_webassembly_compile__);
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warnedWasmCodegens.add(key);
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options.onWarning(warning);
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}
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return fn();
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};
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context.__next_webassembly_instantiate__ = async function __next_webassembly_instantiate__(fn) {
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const result = await fn();
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// If a buffer is given, WebAssembly.instantiate returns an object
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// containing both a module and an instance while it returns only an
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// instance if a WASM module is given. Utilize the fact to determine
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// if the WASM code generation happens.
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//
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/instantiate#primary_overload_%E2%80%94_taking_wasm_binary_code
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const instantiatedFromBuffer = result.hasOwnProperty("module");
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const key = fn.toString();
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if (instantiatedFromBuffer && !warnedWasmCodegens.has(key)) {
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const warning = (0, _middleware).getServerError(new Error(`Dynamic WASM code generation ('WebAssembly.instantiate' with a buffer parameter) not allowed in Edge Runtime.
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Learn More: https://nextjs.org/docs/messages/edge-dynamic-code-evaluation`), _constants.COMPILER_NAMES.edgeServer);
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warning.name = "DynamicWasmCodeGenerationWarning";
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Error.captureStackTrace(warning, __next_webassembly_instantiate__);
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warnedWasmCodegens.add(key);
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options.onWarning(warning);
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}
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return result;
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};
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const __fetch = context.fetch;
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context.fetch = async (input, init = {})=>{
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var ref;
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const assetResponse = await (0, _fetchInlineAssets).fetchInlineAsset({
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input,
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assets: options.edgeFunctionEntry.assets,
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distDir: options.distDir,
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context
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});
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if (assetResponse) {
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return assetResponse;
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}
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init.headers = new Headers(init.headers ?? {});
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const prevs = ((ref = init.headers.get(`x-middleware-subrequest`)) == null ? void 0 : ref.split(":")) || [];
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const value = prevs.concat(options.moduleName).join(":");
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init.headers.set("x-middleware-subrequest", value);
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if (!init.headers.has("user-agent")) {
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init.headers.set(`user-agent`, `Next.js Middleware`);
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}
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if (typeof input === "object" && "url" in input) {
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return __fetch(input.url, {
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...(0, _pick).pick(input, [
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"method",
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"body",
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"cache",
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"credentials",
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"integrity",
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"keepalive",
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"mode",
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"redirect",
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"referrer",
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"referrerPolicy",
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"signal",
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]),
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...init,
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headers: {
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...Object.fromEntries(input.headers),
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...Object.fromEntries(init.headers)
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}
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});
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}
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return __fetch(String(input), init);
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};
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const __Request = context.Request;
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context.Request = class extends __Request {
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constructor(input, init){
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const url = typeof input !== "string" && "url" in input ? input.url : String(input);
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(0, _utils).validateURL(url);
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super(url, init);
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this.next = init == null ? void 0 : init.next;
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}
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};
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const __redirect = context.Response.redirect.bind(context.Response);
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context.Response.redirect = (...args)=>{
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(0, _utils).validateURL(args[0]);
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return __redirect(...args);
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};
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for (const name of _constants.EDGE_UNSUPPORTED_NODE_APIS){
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addStub(context, name);
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}
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Object.assign(context, wasm);
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context.AsyncLocalStorage = _asyncHooks.AsyncLocalStorage;
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return context;
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}
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});
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const decorateUnhandledError = getDecorateUnhandledError(runtime);
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runtime.context.addEventListener("error", decorateUnhandledError);
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const decorateUnhandledRejection = getDecorateUnhandledRejection(runtime);
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runtime.context.addEventListener("unhandledrejection", decorateUnhandledRejection);
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return {
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runtime,
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paths: new Map(),
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warnedEvals: new Set()
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};
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}
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const pendingModuleCaches = new Map();
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function getModuleContextShared(options) {
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let deferredModuleContext = pendingModuleCaches.get(options.moduleName);
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if (!deferredModuleContext) {
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deferredModuleContext = createModuleContext(options);
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pendingModuleCaches.set(options.moduleName, deferredModuleContext);
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}
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return deferredModuleContext;
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}
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async function getModuleContext(options) {
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let moduleContext;
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if (options.useCache) {
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moduleContext = moduleContexts.get(options.moduleName) || await getModuleContextShared(options);
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}
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if (!moduleContext) {
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moduleContext = await createModuleContext(options);
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moduleContexts.set(options.moduleName, moduleContext);
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}
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const evaluateInContext = (filepath)=>{
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if (!moduleContext.paths.has(filepath)) {
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const content = (0, _fs).readFileSync(filepath, "utf-8");
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try {
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moduleContext == null ? void 0 : moduleContext.runtime.evaluate(content);
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moduleContext.paths.set(filepath, content);
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} catch (error) {
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if (options.useCache) {
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moduleContext == null ? void 0 : moduleContext.paths.delete(options.moduleName);
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}
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throw error;
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}
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}
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};
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return {
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...moduleContext,
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evaluateInContext
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};
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}
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//# sourceMappingURL=context.js.map
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