eve/dist/src/internal/workflow-bundle/vercel-workflow-output.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{basename,dirname,extname,join,relative}from"node:path";import{cp,mkdir,readFile,readdir,realpath,rename,rm,symlink,writeFile}from"node:fs/promises";import{EVE_WORKFLOW_QUEUE_NAMESPACE,WORKFLOW_QUEUE_NAMESPACE_ENV}from"#internal/workflow/queue-namespace.js";import{buildWithNitroRolldown,getSingleRolldownChunk}from"#internal/bundler/nitro-rolldown.js";import{EVE_SHARED_SERVER_FUNCTION_PATH,applyEveServiceRoutePrefixWrapper,isEveVercelFunctionPath,normalizeEveVercelRoutes}from"#internal/workflow-bundle/eve-service-route-output.js";const WORKFLOW_STEP_EXTERNAL_PACKAGES=[`@mongodb-js/zstd`,`just-bash`,`microsandbox`,`node-liblzma`],WORKFLOW_BUILDER_DEFERRED_PACKAGES=[`@chat-adapter/slack`,`chat`];function createWorkflowFunctionEnvironment(e){let t={};return isRecord(e)&&Object.assign(t,e),t.NODE_OPTIONS=`--experimental-require-module`,t[WORKFLOW_QUEUE_NAMESPACE_ENV]=EVE_WORKFLOW_QUEUE_NAMESPACE,t}function isRecord(e){return typeof e==`object`&&!!e&&!Array.isArray(e)}async function prepareVercelFunctionDirectory(e){await rm(e,{force:!0,recursive:!0}),await mkdir(e,{recursive:!0})}async function resolveNitroFunctionDirectory(e){try{return await realpath(e.sourcePath)}catch{return await realpath(e.fallbackPath)}}async function copyNitroFunctionDirectory(e){let t=await resolveNitroFunctionDirectory({fallbackPath:e.fallbackPath,sourcePath:e.sourcePath});await prepareVercelFunctionDirectory(e.targetPath),await cp(t,e.targetPath,{dereference:!0,recursive:!0})}async function normalizeEveVercelFunctionOutput(e,t={}){let n=join(e,`functions`),i=await prepareSharedEveServerFunction(n);i!==null&&(t.servicePrefix!==void 0&&await applyEveServiceRoutePrefixWrapper(i,t.servicePrefix),await repointEveFunctionSymlinksInDirectory(n,i)),await pruneNonEveFunctionEntries(n,n),await pruneNonEveVercelRoutes(e,t.servicePrefix)}async function prepareSharedEveServerFunction(e){let n=join(e,`__server.func`),i=join(e,EVE_SHARED_SERVER_FUNCTION_PATH),s;try{s=await realpath(n)}catch(e){if(e instanceof Error&&`code`in e&&e.code===`ENOENT`)return null;throw e}let c=`${i}.eve-staging`;return await mkdir(dirname(i),{recursive:!0}),await rm(c,{force:!0,recursive:!0}),await cp(s,c,{dereference:!0,recursive:!0}),await rm(i,{force:!0,recursive:!0}),await rename(c,i),i}async function repointEveFunctionSymlinksInDirectory(e,t,n=e){let a;try{a=await readdir(e,{withFileTypes:!0})}catch(e){if(e instanceof Error&&`code`in e&&e.code===`ENOENT`)return;throw e}await Promise.all(a.map(async a=>{let o=join(e,a.name),s=normalizeVercelOutputPath(relative(n,o));if(a.isSymbolicLink()){a.name.endsWith(`.func`)&&isEveVercelFunctionPath(s)&&await repointFunctionSymlink(o,t);return}a.isDirectory()&&!a.name.endsWith(`.func`)&&await repointEveFunctionSymlinksInDirectory(o,t,n)}))}async function repointFunctionSymlink(e,n){await rm(e,{force:!0,recursive:!0}),await symlink(normalizeVercelOutputPath(relative(dirname(e),n)),e,`dir`)}async function pruneNonEveFunctionEntries(e,t){let n;try{n=await readdir(t,{withFileTypes:!0})}catch(e){if(e instanceof Error&&`code`in e&&e.code===`ENOENT`)return;throw e}await Promise.all(n.map(async n=>{let a=join(t,n.name),o=normalizeVercelOutputPath(relative(e,a));if(n.name.endsWith(`.func`)){isEveVercelFunctionPath(o)||await rm(a,{force:!0,recursive:!0});return}n.isDirectory()&&await pruneNonEveFunctionEntries(e,a)}))}async function pruneNonEveVercelRoutes(e,t){let n=join(e,`config.json`),i;try{i=JSON.parse(await readFile(n,`utf8`))}catch(e){if(e instanceof Error&&`code`in e&&e.code===`ENOENT`)return;throw e}!isRecord(i)||!Array.isArray(i.routes)||(i.routes=normalizeEveVercelRoutes(i.routes,t),await writeFile(n,`${JSON.stringify(i,null,2)}\n`))}function normalizeVercelOutputPath(e){return e.replaceAll(`\\`,`/`)}async function emitBundledWorkflowFunctionDirectory(e){await prepareVercelFunctionDirectory(e.targetPath);let n=await emitBundledWorkflowPluginModules({build:buildWithNitroRolldown,pluginPaths:e.pluginPaths??[],targetPath:e.targetPath}),i=join(dirname(e.bundlePath),`__eve_workflow_function_entry.js`),a=getSingleRolldownChunk(await buildWithNitroRolldown({cwd:dirname(e.bundlePath),input:i,platform:`node`,plugins:[createVirtualModulePlugin({id:i,moduleType:`js`,source:createWorkflowFunctionEntrypointSource({bundlePath:e.bundlePath,pluginModulePaths:n})})],write:!1,output:{codeSplitting:!1,comments:!1,format:`cjs`,sourcemap:!1}}),`Vercel workflow function for "${e.bundlePath}"`);await Promise.all([writeFile(join(e.targetPath,`index.js`),a.code),writeFile(join(e.targetPath,`package.json`),`${JSON.stringify({type:`commonjs`},null,2)}\n`),writeFile(join(e.targetPath,`.vc-config.json`),`${JSON.stringify({environment:createWorkflowFunctionEnvironment(),handler:`index.js`,launcherType:`Nodejs`,supportsResponseStreaming:!0},null,2)}\n`)])}async function emitBundledWorkflowPluginModules(e){return await Promise.all(e.pluginPaths.map(async(t,n)=>{let i=getSingleRolldownChunk(await e.build({input:t,platform:`node`,write:!1,output:{codeSplitting:!1,comments:!1,format:`esm`,sourcemap:!1}}),`workflow plugin for "${t}"`),a=`__eve_workflow_plugin_${n}.mjs`;return await writeFile(join(e.targetPath,a),i.code),`./${a}`}))}function createVirtualModulePlugin(e){return{name:`eve-virtual-module`,resolveId(t){return t===e.id?e.id:void 0},load(t){return t===e.id?{code:e.source,moduleType:e.moduleType}:void 0}}}function toRelativeImportPath(e){let t=relative(e.fromDirectoryPath,e.toFilePath).replaceAll(`\\`,`/`);return t.startsWith(`.`)?t:`./${t}`}function normalizeImportSpecifierPath(e){return e.replaceAll(`\\`,`/`)}function createWorkflowFunctionEntrypointSource(t){let n=t.pluginModulePaths.map(e=>normalizeImportSpecifierPath(e)),r=n.length>0;return[`const { POST } = require(${JSON.stringify(`./${basename(t.bundlePath)}`)});`,...r?[`const workflowPluginModulePaths = ${JSON.stringify(n)};`,``,`let workflowPluginPromise;`,``,`async function loadWorkflowPlugins() {`,`  if (workflowPluginPromise == null) {`,`    workflowPluginPromise = (async () => {`,`      for (const pluginPath of workflowPluginModulePaths) {`,`        await import(pluginPath);`,`      }`,`    })();`,`  }`,`  return await workflowPluginPromise;`,`}`]:[],``,`const DEFAULT_WORKFLOW_REQUEST_ORIGIN = "https://workflow.invalid";`,``,`function getHeader(headers, name) {`,`  if (headers === null || headers === undefined) {`,`    return undefined;`,`  }`,`  if (typeof headers.get === "function") {`,`    const value = headers.get(name);`,`    return typeof value === "string" && value.length > 0 ? value : undefined;`,`  }`,`  if (typeof headers !== "object") {`,`    return undefined;`,`  }`,`  const record = headers;`,`  const lowerName = name.toLowerCase();`,`  for (const [key, value] of Object.entries(record)) {`,`    if (key.toLowerCase() !== lowerName || value === undefined) {`,`      continue;`,`    }`,`    if (Array.isArray(value)) {`,`      return value.find((item) => typeof item === "string" && item.length > 0);`,`    }`,`    return typeof value === "string" && value.length > 0 ? value : undefined;`,`  }`,`  return undefined;`,`}`,``,`function createHeaders(headers) {`,`  const normalized = new Headers();`,`  if (headers === null || headers === undefined) {`,`    return normalized;`,`  }`,`  if (headers instanceof Headers) {`,`    return headers;`,`  }`,`  if (typeof headers.forEach === "function" && typeof headers.entries === "function") {`,`    for (const [key, value] of headers.entries()) {`,`      normalized.append(key, value);`,`    }`,`    return normalized;`,`  }`,`  for (const [key, value] of Object.entries(headers)) {`,`    if (value === undefined) {`,`      continue;`,`    }`,`    if (Array.isArray(value)) {`,`      for (const item of value) {`,`        normalized.append(key, String(item));`,`      }`,`      continue;`,`    }`,`    normalized.set(key, String(value));`,`  }`,`  return normalized;`,`}`,``,`function toAbsoluteWorkflowUrl(request) {`,`  const url = typeof request?.url === "string" ? request.url : "/";`,`  if (/^https?:\\/\\//.test(url)) {`,`    return url;`,`  }`,`  const host = getHeader(request?.headers, "x-forwarded-host") ?? getHeader(request?.headers, "host");`,`  const protocolHeader = getHeader(request?.headers, "x-forwarded-proto");`,`  const protocol = protocolHeader === "http" || protocolHeader === "https" ? protocolHeader : "https";`,`  const origin = typeof host === "string" && host.length > 0 ? protocol + "://" + host : DEFAULT_WORKFLOW_REQUEST_ORIGIN;`,`  return new URL(url, origin).toString();`,`}`,``,`function normalizeWorkflowRequest(request) {`,`  if (request instanceof Request) {`,`    if (/^https?:\\/\\//.test(request.url)) {`,`      return request;`,`    }`,`    return new Request(toAbsoluteWorkflowUrl(request), request);`,`  }`,`  const method = typeof request?.method === "string" ? request.method : "GET";`,`  const headers = createHeaders(request?.headers);`,`  const init = {`,`    headers,`,`    method,`,`  };`,`  if (method !== "GET" && method !== "HEAD") {`,`    const body = request?.body ?? (request !== null && typeof request === "object" && typeof request.pipe === "function" ? request : undefined);`,`    if (body !== undefined) {`,`      init.body = body;`,`      init.duplex = "half";`,`    }`,`  }`,`  return new Request(toAbsoluteWorkflowUrl(request), init);`,`}`,``,`module.exports = async function handleWorkflowFunctionRequest(requestContext) {`,`  const request =`,`    requestContext !== null && typeof requestContext === "object" && "req" in requestContext`,`      ? requestContext.req`,`      : requestContext;`,...r?[`  await loadWorkflowPlugins();`]:[],`  return await POST(normalizeWorkflowRequest(request));`,`};`,``].join(`
`)}function createRoutedNitroEntrypoint(e){return[`import nitroHandler from ${JSON.stringify(e.delegateImportPath)};`,``,`function invokeNitroHandler(request, context) {`,`  if (typeof nitroHandler === "function") {`,`    return nitroHandler(request, context);`,`  }`,``,`  if (nitroHandler !== null && typeof nitroHandler === "object" && "fetch" in nitroHandler) {`,`    const fetch = nitroHandler.fetch;`,`    if (typeof fetch === "function") {`,`      return fetch.call(nitroHandler, request, context);`,`    }`,`  }`,``,`  throw new TypeError("Expected Nitro handler to export a function or an object with fetch(request, context).");`,`}`,``,`const workflowRoutePath = ${JSON.stringify(e.workflowRoutePath)};`,``,`function rewriteRequestToWorkflowRoute(request) {`,`  const sourceUrl = new URL(request.url);`,`  const routedUrl = new URL(workflowRoutePath, sourceUrl);`,`  routedUrl.search = sourceUrl.search;`,`  return new Request(routedUrl, request);`,`}`,``,`export default {`,`  fetch(request, context) {`,`    return invokeNitroHandler(rewriteRequestToWorkflowRoute(request), context);`,`  },`,`};`,``].join(`
`)}async function readVercelHandlerPath(e){try{let t=JSON.parse(await readFile(join(e,`.vc-config.json`),`utf8`));if(typeof t.handler==`string`&&t.handler.length>0)return t.handler}catch{}return`index.mjs`}async function retargetNitroFunctionDirectoryToWorkflowRoute(e){let i=await readVercelHandlerPath(e.functionDirectoryPath),a=join(e.functionDirectoryPath,i),o=dirname(a),s=extname(i),c=join(o,`__eve_nitro_handler__${s.length>0?s:`.mjs`}`),l=toRelativeImportPath({fromDirectoryPath:o,toFilePath:c});await rename(a,c),await writeFile(a,createRoutedNitroEntrypoint({delegateImportPath:l,workflowRoutePath:e.workflowRoutePath}))}export{WORKFLOW_BUILDER_DEFERRED_PACKAGES,WORKFLOW_STEP_EXTERNAL_PACKAGES,copyNitroFunctionDirectory,createWorkflowFunctionEnvironment,emitBundledWorkflowFunctionDirectory,normalizeEveVercelFunctionOutput,prepareVercelFunctionDirectory,retargetNitroFunctionDirectoryToWorkflowRoute};