{"version":3,"sources":["../../../src/build/next-config-ts/transpile-config.ts"],"sourcesContent":["import type { Options as SWCOptions } from '@swc/core'\nimport type { CompilerOptions } from 'typescript'\n\nimport { resolve } from 'node:path'\nimport { readFile } from 'node:fs/promises'\nimport { pathToFileURL } from 'node:url'\nimport { deregisterHook, registerHook, requireFromString } from './require-hook'\nimport { warn, warnOnce } from '../output/log'\nimport { installDependencies } from '../../lib/install-dependencies'\nimport { getNodeOptionsArgs } from '../../server/lib/utils'\n\nfunction resolveSWCOptions(\n  cwd: string,\n  compilerOptions: CompilerOptions\n): SWCOptions {\n  return {\n    jsc: {\n      parser: {\n        syntax: 'typescript',\n      },\n      ...(compilerOptions.paths ? { paths: compilerOptions.paths } : {}),\n      ...(compilerOptions.baseUrl\n        ? // Needs to be an absolute path.\n          { baseUrl: resolve(cwd, compilerOptions.baseUrl) }\n        : compilerOptions.paths\n          ? // If paths is given, baseUrl is required.\n            { baseUrl: cwd }\n          : {}),\n    },\n    module: {\n      type: 'commonjs',\n    },\n    isModule: 'unknown',\n    env: {\n      targets: {\n        // Setting the Node.js version can reduce unnecessary code generation.\n        node: process?.versions?.node ?? '20.19.0',\n      },\n    },\n  } satisfies SWCOptions\n}\n\n// Ported from next/src/lib/verify-typescript-setup.ts\n// Although this overlaps with the later `verifyTypeScriptSetup`,\n// it is acceptable since the time difference in the worst case is trivial,\n// as we are only preparing to install the dependencies once more.\nasync function verifyTypeScriptSetup(cwd: string, configFileName: string) {\n  try {\n    // Quick module check.\n    require.resolve('typescript', { paths: [cwd] })\n  } catch (error) {\n    if (\n      error &&\n      typeof error === 'object' &&\n      'code' in error &&\n      error.code === 'MODULE_NOT_FOUND'\n    ) {\n      warn(\n        `Installing TypeScript as it was not found while loading \"${configFileName}\".`\n      )\n\n      await installDependencies(cwd, [{ pkg: 'typescript' }], true).catch(\n        (err) => {\n          if (err && typeof err === 'object' && 'command' in err) {\n            console.error(\n              `Failed to install TypeScript, please install it manually to continue:\\n` +\n                (err as any).command +\n                '\\n'\n            )\n          }\n          throw err\n        }\n      )\n    }\n  }\n}\n\nasync function getTsConfig(cwd: string): Promise<CompilerOptions> {\n  const ts: typeof import('typescript') = require(\n    require.resolve('typescript', { paths: [cwd] })\n  )\n\n  // NOTE: This doesn't fully cover the edge case for setting\n  // \"typescript.tsconfigPath\" in next config which is currently\n  // a restriction.\n  const tsConfigPath = ts.findConfigFile(\n    cwd,\n    ts.sys.fileExists,\n    'tsconfig.json'\n  )\n\n  if (!tsConfigPath) {\n    // It is ok to not return ts.getDefaultCompilerOptions() because\n    // we are only looking for paths and baseUrl from tsConfig.\n    return {}\n  }\n\n  const configFile = ts.readConfigFile(tsConfigPath, ts.sys.readFile)\n  const parsedCommandLine = ts.parseJsonConfigFileContent(\n    configFile.config,\n    ts.sys,\n    cwd\n  )\n\n  return parsedCommandLine.options\n}\n\nexport async function transpileConfig({\n  nextConfigPath,\n  configFileName,\n  cwd,\n}: {\n  nextConfigPath: string\n  configFileName: string\n  cwd: string\n}) {\n  try {\n    // envs are passed to the workers and preserve the flag\n    if (process.env.__NEXT_NODE_NATIVE_TS_LOADER_ENABLED === 'true') {\n      try {\n        // Node.js v22.10.0+\n        // Value is 'strip' or 'transform' based on how the feature is enabled.\n        // https://nodejs.org/api/process.html#processfeaturestypescript\n        // TODO: Remove `as any` once we bump @types/node to v22.10.0+\n        if ((process.features as any).typescript) {\n          // Run import() here to catch errors and fallback to legacy resolution.\n          return (await import(pathToFileURL(nextConfigPath).href)).default\n        }\n\n        if (\n          getNodeOptionsArgs().includes('--no-experimental-strip-types') ||\n          process.execArgv.includes('--no-experimental-strip-types')\n        ) {\n          warnOnce(\n            `Skipped resolving \"${configFileName}\" using Node.js native TypeScript resolution because it was disabled by the \"--no-experimental-strip-types\" flag.` +\n              ' Falling back to legacy resolution.' +\n              ' Learn more: https://nextjs.org/docs/app/api-reference/config/typescript#using-nodejs-native-typescript-resolver-for-nextconfigts'\n          )\n        }\n\n        // Feature is not enabled, fallback to legacy resolution for current session.\n        process.env.__NEXT_NODE_NATIVE_TS_LOADER_ENABLED = 'false'\n      } catch (cause) {\n        warnOnce(\n          `Failed to import \"${configFileName}\" using Node.js native TypeScript resolution.` +\n            ' Falling back to legacy resolution.' +\n            ' Learn more: https://nextjs.org/docs/app/api-reference/config/typescript#using-nodejs-native-typescript-resolver-for-nextconfigts',\n          { cause }\n        )\n        // Once failed, fallback to legacy resolution for current session.\n        process.env.__NEXT_NODE_NATIVE_TS_LOADER_ENABLED = 'false'\n      }\n    }\n\n    // Ensure TypeScript is installed to use the API.\n    await verifyTypeScriptSetup(cwd, configFileName)\n    const compilerOptions = await getTsConfig(cwd)\n\n    return handleCJS({ cwd, nextConfigPath, compilerOptions })\n  } catch (cause) {\n    throw new Error(`Failed to transpile \"${configFileName}\".`, { cause })\n  }\n}\n\nasync function handleCJS({\n  cwd,\n  nextConfigPath,\n  compilerOptions,\n}: {\n  cwd: string\n  nextConfigPath: string\n  compilerOptions: CompilerOptions\n}) {\n  const swcOptions = resolveSWCOptions(cwd, compilerOptions)\n  let hasRequire = false\n  try {\n    const nextConfigString = await readFile(nextConfigPath, 'utf8')\n    // lazy require swc since it loads React before even setting NODE_ENV\n    // resulting loading Development React on Production\n    const { transform } = require('../swc') as typeof import('../swc')\n    const { code } = await transform(nextConfigString, swcOptions)\n\n    // register require hook only if require exists\n    if (code.includes('require(')) {\n      registerHook(swcOptions)\n      hasRequire = true\n    }\n\n    // filename & extension don't matter here\n    return requireFromString(code, resolve(cwd, 'next.config.compiled.js'))\n  } catch (error) {\n    throw error\n  } finally {\n    if (hasRequire) {\n      deregisterHook()\n    }\n  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