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All rights reserved. Licensed under the MIT license.\n// See LICENSE in the project root for license information.\n\n// This is a workaround for https://github.com/eslint/eslint/issues/3458\n//\n// To correct how ESLint searches for plugin packages, add this line to the top of your project's .eslintrc.js file:\n//\n//    require(\"@rushstack/eslint-patch/modern-module-resolution\");\n//\n\nimport path from 'path';\n\nconst isModuleResolutionError: (ex: unknown) => boolean = (ex) =>\n  typeof ex === 'object' && !!ex && 'code' in ex && (ex as { code: unknown }).code === 'MODULE_NOT_FOUND';\n\n// Module path for eslintrc.cjs\n// Example: \".../@eslint/eslintrc/dist/eslintrc.cjs\"\nlet eslintrcBundlePath: string | undefined = undefined;\n\n// Module path for config-array-factory.js\n// Example: \".../@eslint/eslintrc/lib/config-array-factory\"\nlet configArrayFactoryPath: string | undefined = undefined;\n\n// Module path for relative-module-resolver.js\n// Example: \".../@eslint/eslintrc/lib/shared/relative-module-resolver\"\nlet moduleResolverPath: string | undefined = undefined;\n\n// Module path for naming.js\n// Example: \".../@eslint/eslintrc/lib/shared/naming\"\nlet namingPath: string | undefined = undefined;\n\n// Folder path where ESLint's package.json can be found\n// Example: \".../node_modules/eslint\"\nlet eslintFolder: string | undefined = undefined;\n\n// Probe for the ESLint >=8.0.0 layout:\nfor (let currentModule: NodeModule = module; ; ) {\n  if (!eslintrcBundlePath) {\n    if (currentModule.filename.endsWith('eslintrc.cjs')) {\n      // For ESLint >=8.0.0, all @eslint/eslintrc code is bundled at this path:\n      //   .../@eslint/eslintrc/dist/eslintrc.cjs\n      try {\n        const eslintrcFolderPath: string = path.dirname(\n          require.resolve('@eslint/eslintrc/package.json', { paths: [currentModule.path] })\n        );\n\n        // Make sure we actually resolved the module in our call path\n        // and not some other spurious dependency.\n        const resolvedEslintrcBundlePath: string = path.join(eslintrcFolderPath, 'dist/eslintrc.cjs');\n        if (resolvedEslintrcBundlePath === currentModule.filename) {\n          eslintrcBundlePath = resolvedEslintrcBundlePath;\n        }\n      } catch (ex: unknown) {\n        // Module resolution failures are expected, as we're walking\n        // up our require stack to look for eslint. All other errors\n        // are re-thrown.\n        if (!isModuleResolutionError(ex)) {\n          throw ex;\n        }\n      }\n    }\n  } else {\n    // Next look for a file in ESLint's folder\n    //   .../eslint/lib/cli-engine/cli-engine.js\n    try {\n      const eslintCandidateFolder: string = path.dirname(\n        require.resolve('eslint/package.json', {\n          paths: [currentModule.path]\n        })\n      );\n\n      // Make sure we actually resolved the module in our call path\n      // and not some other spurious dependency.\n      if (currentModule.filename.startsWith(eslintCandidateFolder + path.sep)) {\n        eslintFolder = eslintCandidateFolder;\n        break;\n      }\n    } catch (ex: unknown) {\n      // Module resolution failures are expected, as we're walking\n      // up our require stack to look for eslint. All other errors\n      // are re-thrown.\n      if (!isModuleResolutionError(ex)) {\n        throw ex;\n      }\n    }\n  }\n\n  if (!currentModule.parent) {\n    break;\n  }\n  currentModule = currentModule.parent;\n}\n\nif (!eslintFolder) {\n  // Probe for the ESLint >=7.12.0 layout:\n  for (let currentModule: NodeModule = module; ; ) {\n    if (!configArrayFactoryPath) {\n      // For ESLint >=7.12.0, config-array-factory.js is at this path:\n      //   .../@eslint/eslintrc/lib/config-array-factory.js\n      try {\n        const eslintrcFolder: string = path.dirname(\n          require.resolve('@eslint/eslintrc/package.json', {\n            paths: [currentModule.path]\n          })\n        );\n\n        const resolvedConfigArrayFactoryPath: string = path.join(\n          eslintrcFolder,\n          '/lib/config-array-factory.js'\n        );\n        if (resolvedConfigArrayFactoryPath === currentModule.filename) {\n          configArrayFactoryPath = resolvedConfigArrayFactoryPath;\n          moduleResolverPath = `${eslintrcFolder}/lib/shared/relative-module-resolver`;\n          namingPath = `${eslintrcFolder}/lib/shared/naming`;\n        }\n      } catch (ex: unknown) {\n        // Module resolution failures are expected, as we're walking\n        // up our require stack to look for eslint. All other errors\n        // are re-thrown.\n        if (!isModuleResolutionError(ex)) {\n          throw ex;\n        }\n      }\n    } else if (currentModule.filename.endsWith('cli-engine.js')) {\n      // Next look for a file in ESLint's folder\n      //   .../eslint/lib/cli-engine/cli-engine.js\n      try {\n        const eslintCandidateFolder: string = path.dirname(\n          require.resolve('eslint/package.json', {\n            paths: [currentModule.path]\n          })\n        );\n\n        if (path.join(eslintCandidateFolder, 'lib/cli-engine/cli-engine.js') === currentModule.filename) {\n          eslintFolder = eslintCandidateFolder;\n          break;\n        }\n      } catch (ex: unknown) {\n        // Module resolution failures are expected, as we're walking\n        // up our require stack to look for eslint. All other errors\n        // are rethrown.\n        if (!isModuleResolutionError(ex)) {\n          throw ex;\n        }\n      }\n    }\n\n    if (!currentModule.parent) {\n      break;\n    }\n    currentModule = currentModule.parent;\n  }\n}\n\nif (!eslintFolder) {\n  // Probe for the <7.12.0 layout:\n  for (let currentModule: NodeModule = module; ; ) {\n    // For ESLint <7.12.0, config-array-factory.js was at this path:\n    //   .../eslint/lib/cli-engine/config-array-factory.js\n    if (/[\\\\/]eslint[\\\\/]lib[\\\\/]cli-engine[\\\\/]config-array-factory\\.js$/i.test(currentModule.filename)) {\n      eslintFolder = path.join(path.dirname(currentModule.filename), '../..');\n      configArrayFactoryPath = `${eslintFolder}/lib/cli-engine/config-array-factory`;\n      moduleResolverPath = `${eslintFolder}/lib/shared/relative-module-resolver`;\n\n      // The naming module was moved to @eslint/eslintrc in ESLint 7.8.0, which is also when the @eslint/eslintrc\n      // package was created and added to ESLint, so we need to probe for whether it's in the old or new location.\n      let eslintrcFolder: string | undefined;\n      try {\n        eslintrcFolder = path.dirname(\n          require.resolve('@eslint/eslintrc/package.json', {\n            paths: [currentModule.path]\n          })\n        );\n      } catch (ex: unknown) {\n        if (!isModuleResolutionError(ex)) {\n          throw ex;\n        }\n      }\n\n      namingPath = `${eslintrcFolder ?? eslintFolder}/lib/shared/naming`;\n      break;\n    }\n\n    if (!currentModule.parent) {\n      // This was tested with ESLint 6.1.0 .. 7.12.1.\n      throw new Error(\n        'Failed to patch ESLint because the calling module was not recognized.\\n' +\n          'If you are using a newer ESLint version that may be unsupported, please create a GitHub issue:\\n' +\n          'https://github.com/microsoft/rushstack/issues'\n      );\n    }\n    currentModule = currentModule.parent;\n  }\n}\n\n// Detect the ESLint package version\nconst eslintPackageJsonPath: string = `${eslintFolder}/package.json`;\nconst eslintPackageObject: { version: string } = require(eslintPackageJsonPath);\nexport const eslintPackageVersion: string = eslintPackageObject.version;\nconst ESLINT_MAJOR_VERSION: number = parseInt(eslintPackageVersion, 10);\nif (isNaN(ESLINT_MAJOR_VERSION)) {\n  throw new Error(\n    `Unable to parse ESLint version \"${eslintPackageVersion}\" in file \"${eslintPackageJsonPath}\"`\n  );\n}\n\nif (!(ESLINT_MAJOR_VERSION >= 6 && ESLINT_MAJOR_VERSION <= 8)) {\n  throw new Error(\n    'The ESLint patch script has only been tested with ESLint version 6.x, 7.x, and 8.x.' +\n      ` (Your version: ${eslintPackageVersion})\\n` +\n      'Consider reporting a GitHub issue:\\n' +\n      'https://github.com/microsoft/rushstack/issues'\n  );\n}\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nlet configArrayFactory: any;\nif (ESLINT_MAJOR_VERSION === 8) {\n  configArrayFactory = require(eslintrcBundlePath!).Legacy.ConfigArrayFactory;\n} else {\n  configArrayFactory = require(configArrayFactoryPath!).ConfigArrayFactory;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nlet ModuleResolver: { resolve: any };\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nlet Naming: { normalizePackageName: any };\nif (ESLINT_MAJOR_VERSION === 8) {\n  ModuleResolver = require(eslintrcBundlePath!).Legacy.ModuleResolver;\n  Naming = require(eslintrcBundlePath!).Legacy.naming;\n} else {\n  ModuleResolver = require(moduleResolverPath!);\n  Naming = require(namingPath!);\n}\n\nexport {\n  eslintFolder,\n  configArrayFactory,\n  ModuleResolver,\n  Naming,\n  ESLINT_MAJOR_VERSION,\n  isModuleResolutionError\n};\n"]}