import { isBuiltin, createRequire } from 'node:module';
import { pathToFileURL, fileURLToPath } from 'node:url';
import vm from 'node:vm';
import { isAbsolute } from 'pathe';
import { ssrModuleExportsKey, ssrImportMetaKey, ssrImportKey, ssrDynamicImportKey, ssrExportAllKey } from 'vite/module-runner';
import { T as Traces } from './chunks/traces.U4xDYhzZ.js';
const performanceNow = performance.now.bind(performance);
class ModuleDebug {
executionStack = [];
startCalculateModuleExecutionInfo(filename, options) {
const startTime = performanceNow();
this.executionStack.push({
filename,
startTime,
subImportTime: 0
});
return () => {
const duration = performanceNow() - startTime;
const currentExecution = this.executionStack.pop();
if (currentExecution == null) throw new Error("Execution stack is empty, this should never happen");
const selfTime = duration - currentExecution.subImportTime;
if (this.executionStack.length > 0) this.executionStack.at(-1).subImportTime += duration;
return {
startOffset: options.startOffset,
external: options.external,
importer: options.importer,
duration,
selfTime
};
};
}
}
const isWindows = process.platform === "win32";
class VitestModuleEvaluator {
stubs = {};
env = createImportMetaEnvProxy();
vm;
compiledFunctionArgumentsNames;
compiledFunctionArgumentsValues = [];
primitives;
debug = new ModuleDebug();
_otel;
_evaluatedModules;
constructor(vmOptions, options = {}) {
this.options = options;
this._otel = options.traces || new Traces({ enabled: false });
this.vm = vmOptions;
this.stubs = getDefaultRequestStubs(vmOptions?.context);
this._evaluatedModules = options.evaluatedModules;
if (options.compiledFunctionArgumentsNames) this.compiledFunctionArgumentsNames = options.compiledFunctionArgumentsNames;
if (options.compiledFunctionArgumentsValues) this.compiledFunctionArgumentsValues = options.compiledFunctionArgumentsValues;
if (vmOptions) this.primitives = vm.runInContext("({ Object, Proxy, Reflect })", vmOptions.context);
else this.primitives = {
Object,
Proxy,
Reflect
};
}
convertIdToImportUrl(id) {
// TODO: vitest returns paths for external modules, but Vite returns file://
// REMOVE WHEN VITE 6 SUPPORT IS OVER
// unfortunetly, there is a bug in Vite where ID is resolved incorrectly, so we can't return files until the fix is merged
// https://github.com/vitejs/vite/pull/20449
if (!isWindows || isBuiltin(id) || /^(?:node:|data:|http:|https:|file:)/.test(id)) return id;
const [filepath, query] = id.split("?");
if (query) return `${pathToFileURL(filepath).toString()}?${query}`;
return pathToFileURL(filepath).toString();
}
async runExternalModule(id) {
if (id in this.stubs) return this.stubs[id];
const file = this.convertIdToImportUrl(id);
const importer = (this._evaluatedModules?.getModuleById(id)?.importers)?.values().next().value;
const filename = id.startsWith("file://") ? fileURLToPath(id) : id;
const finishModuleExecutionInfo = this.debug.startCalculateModuleExecutionInfo(filename, {
startOffset: 0,
external: true,
importer
});
const namespace = await this._otel.$("vitest.module.external", { attributes: { "code.file.path": file } }, () => this.vm ? this.vm.externalModulesExecutor.import(file) : import(file)).finally(() => {
this.options.moduleExecutionInfo?.set(filename, finishModuleExecutionInfo());
});
if (!this.shouldInterop(file, namespace)) return namespace;
const { mod, defaultExport } = interopModule(namespace);
const { Proxy, Reflect } = this.primitives;
return new Proxy(mod, {
get(mod, prop) {
if (prop === "default") return defaultExport;
return mod[prop] ?? defaultExport?.[prop];
},
has(mod, prop) {
if (prop === "default") return defaultExport !== void 0;
return prop in mod || defaultExport && prop in defaultExport;
},
getOwnPropertyDescriptor(mod, prop) {
const descriptor = Reflect.getOwnPropertyDescriptor(mod, prop);
if (descriptor) return descriptor;
if (prop === "default" && defaultExport !== void 0) return {
value: defaultExport,
enumerable: true,
configurable: true
};
}
});
}
async runInlinedModule(context, code, module) {
return this._otel.$("vitest.module.inline", (span) => this._runInlinedModule(context, code, module, span));
}
async _runInlinedModule(context, code, module, span) {
context.__vite_ssr_import_meta__.env = this.env;
const { Reflect, Proxy, Object } = this.primitives;
const exportsObject = context[ssrModuleExportsKey];
const SYMBOL_NOT_DEFINED = Symbol("not defined");
let moduleExports = SYMBOL_NOT_DEFINED;
// this proxy is triggered only on exports.{name} and module.exports access
// inside the module itself. imported module is always "exports"
const cjsExports = new Proxy(exportsObject, {
get: (target, p, receiver) => {
if (Reflect.has(target, p)) return Reflect.get(target, p, receiver);
return Reflect.get(Object.prototype, p, receiver);
},
getPrototypeOf: () => Object.prototype,
set: (_, p, value) => {
span.addEvent(`cjs export proxy is triggered for ${String(p)}`);
// treat "module.exports =" the same as "exports.default =" to not have nested "default.default",
// so "exports.default" becomes the actual module
if (p === "default" && this.shouldInterop(module.file, { default: value }) && cjsExports !== value) {
span.addEvent("`exports.default` is assigned, copying values");
exportAll(cjsExports, value);
exportsObject.default = value;
return true;
}
if (!Reflect.has(exportsObject, "default")) exportsObject.default = {};
// returns undefined, when accessing named exports, if default is not an object
// but is still present inside hasOwnKeys, this is Node behaviour for CJS
if (moduleExports !== SYMBOL_NOT_DEFINED && isPrimitive(moduleExports)) {
span.addEvent(`\`exports.${String(p)}\` is assigned, but module.exports is a primitive. assigning "undefined" values instead to comply with ESM`);
defineExport(exportsObject, p, () => void 0);
return true;
}
if (!isPrimitive(exportsObject.default)) exportsObject.default[p] = value;
if (p !== "default") defineExport(exportsObject, p, () => value);
return true;
}
});
const moduleProxy = {
set exports(value) {
span.addEvent("`module.exports` is assigned directly, copying all properties to `exports`");
exportAll(cjsExports, value);
exportsObject.default = value;
moduleExports = value;
},
get exports() {
return cjsExports;
}
};
const meta = context[ssrImportMetaKey];
if (this.options.getCurrentTestFilepath?.() === module.file) {
const globalNamespace = this.vm?.context || globalThis;
Object.defineProperty(meta, "vitest", { get: () => globalNamespace.__vitest_index__ });
}
const filename = meta.filename;
const dirname = meta.dirname;
span.setAttributes({ "code.file.path": filename });
const require = this.createRequire(filename);
const argumentsList = [
ssrModuleExportsKey,
ssrImportMetaKey,
ssrImportKey,
ssrDynamicImportKey,
ssrExportAllKey,
"__vite_ssr_exportName__",
"__filename",
"__dirname",
"module",
"exports",
"require"
];
if (this.compiledFunctionArgumentsNames) argumentsList.push(...this.compiledFunctionArgumentsNames);
span.setAttribute("vitest.module.arguments", argumentsList);
// add 'use strict' since ESM enables it by default
const codeDefinition = `'use strict';async (${argumentsList.join(",")})=>{{`;
const wrappedCode = `${codeDefinition}${code}\n}}`;
const options = {
filename: module.id,
lineOffset: 0,
columnOffset: -codeDefinition.length
};
// this will always be 1 element because it's cached after load
const importer = module.importers.values().next().value;
const finishModuleExecutionInfo = this.debug.startCalculateModuleExecutionInfo(options.filename, {
startOffset: codeDefinition.length,
importer
});
try {
await (this.vm ? vm.runInContext(wrappedCode, this.vm.context, options) : vm.runInThisContext(wrappedCode, options))(
context[ssrModuleExportsKey],
context[ssrImportMetaKey],
context[ssrImportKey],
context[ssrDynamicImportKey],
context[ssrExportAllKey],
// vite 7 support, remove when vite 7+ is supported
context.__vite_ssr_exportName__ || ((name, getter) => Object.defineProperty(exportsObject, name, {
enumerable: true,
configurable: true,
get: getter
})),
filename,
dirname,
moduleProxy,
cjsExports,
require,
...this.compiledFunctionArgumentsValues
);
} finally {
// moduleExecutionInfo needs to use Node filename instead of the normalized one
// because we rely on this behaviour in coverage-v8, for example
this.options.moduleExecutionInfo?.set(options.filename, finishModuleExecutionInfo());
}
}
createRequire(filename) {
// \x00 is a rollup convention for virtual files,
// it is not allowed in actual file names
if (filename[0] === "\0" || !isAbsolute(filename)) return () => ({});
return this.vm ? this.vm.externalModulesExecutor.createRequire(filename) : createRequire(filename);
}
shouldInterop(path, mod) {
if (this.options.interopDefault === false) return false;
// never interop ESM modules
// TODO: should also skip for `.js` with `type="module"`
return !path.endsWith(".mjs") && "default" in mod;
}
}
function createImportMetaEnvProxy() {
// packages/vitest/src/node/plugins/index.ts:146
const booleanKeys = [
"DEV",
"PROD",
"SSR"
];
return new Proxy(process.env, {
get(_, key) {
if (typeof key !== "string") return;
if (booleanKeys.includes(key)) return !!process.env[key];
return process.env[key];
},
set(_, key, value) {
if (typeof key !== "string") return true;
if (booleanKeys.includes(key)) process.env[key] = value ? "1" : "";
else process.env[key] = value;
return true;
}
});
}
function updateStyle(id, css) {
if (typeof document === "undefined") return;
const element = document.querySelector(`[data-vite-dev-id="${id}"]`);
if (element) {
element.textContent = css;
return;
}
const head = document.querySelector("head");
const style = document.createElement("style");
style.setAttribute("type", "text/css");
style.setAttribute("data-vite-dev-id", id);
style.textContent = css;
head?.appendChild(style);
}
function removeStyle(id) {
if (typeof document === "undefined") return;
const sheet = document.querySelector(`[data-vite-dev-id="${id}"]`);
if (sheet) document.head.removeChild(sheet);
}
const defaultClientStub = {
injectQuery: (id) => id,
createHotContext: () => {
return {
accept: () => {},
prune: () => {},
dispose: () => {},
decline: () => {},
invalidate: () => {},
on: () => {},
send: () => {}
};
},
updateStyle: () => {},
removeStyle: () => {}
};
function getDefaultRequestStubs(context) {
if (!context) {
const clientStub = {
...defaultClientStub,
updateStyle,
removeStyle
};
return { "/@vite/client": clientStub };
}
const clientStub = vm.runInContext(`(defaultClient) => ({ ...defaultClient, updateStyle: ${updateStyle.toString()}, removeStyle: ${removeStyle.toString()} })`, context)(defaultClientStub);
return { "/@vite/client": clientStub };
}
function exportAll(exports$1, sourceModule) {
// #1120 when a module exports itself it causes
// call stack error
if (exports$1 === sourceModule) return;
if (isPrimitive(sourceModule) || Array.isArray(sourceModule) || sourceModule instanceof Promise) return;
for (const key in sourceModule) if (key !== "default" && !(key in exports$1)) try {
defineExport(exports$1, key, () => sourceModule[key]);
} catch {}
}
// keep consistency with Vite on how exports are defined
function defineExport(exports$1, key, value) {
Object.defineProperty(exports$1, key, {
enumerable: true,
configurable: true,
get: value
});
}
function isPrimitive(v) {
return !(typeof v === "object" || typeof v === "function") || v == null;
}
function interopModule(mod) {
if (isPrimitive(mod)) return {
mod: { default: mod },
defaultExport: mod
};
let defaultExport = "default" in mod ? mod.default : mod;
if (!isPrimitive(defaultExport) && "__esModule" in defaultExport) {
mod = defaultExport;
if ("default" in defaultExport) defaultExport = defaultExport.default;
}
return {
mod,
defaultExport
};
}
const VALID_ID_PREFIX = `/@id/`;
const NULL_BYTE_PLACEHOLDER = `__x00__`;
function wrapId(id) {
return id.startsWith(VALID_ID_PREFIX) ? id : VALID_ID_PREFIX + id.replace("\0", NULL_BYTE_PLACEHOLDER);
}
function unwrapId(id) {
return id.startsWith(VALID_ID_PREFIX) ? id.slice(VALID_ID_PREFIX.length).replace(NULL_BYTE_PLACEHOLDER, "\0") : id;
}
export { VitestModuleEvaluator, createImportMetaEnvProxy, getDefaultRequestStubs, isPrimitive, unwrapId, wrapId };
