Function createProgram

test/fixtures/snapshot/typescript.js:116605–119249

(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics)

        };
    }
    function createProgram(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics) {
        var _a, _b, _c, _d;
        var createProgramOptions = ts.isArray(rootNamesOrOptions) ? createCreateProgramOptions(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics) : rootNamesOrOptions; // TODO: GH#18217
        var rootNames = createProgramOptions.rootNames, options = createProgramOptions.options, configFileParsingDiagnostics = createProgramOptions.configFileParsingDiagnostics, projectReferences = createProgramOptions.projectReferences;
        var oldProgram = createProgramOptions.oldProgram;
        var processingDefaultLibFiles;
        var processingOtherFiles;
        var files;
        var symlinks;
        var commonSourceDirectory;
        var typeChecker;
        var classifiableNames;
        var ambientModuleNameToUnmodifiedFileName = new ts.Map();
        var fileReasons = ts.createMultiMap();
        var cachedBindAndCheckDiagnosticsForFile = {};
        var cachedDeclarationDiagnosticsForFile = {};
        var resolvedTypeReferenceDirectives = ts.createModeAwareCache();
        var fileProcessingDiagnostics;
        // The below settings are to track if a .js file should be add to the program if loaded via searching under node_modules.
        // This works as imported modules are discovered recursively in a depth first manner, specifically:
        // - For each root file, findSourceFile is called.
        // - This calls processImportedModules for each module imported in the source file.
        // - This calls resolveModuleNames, and then calls findSourceFile for each resolved module.
        // As all these operations happen - and are nested - within the createProgram call, they close over the below variables.
        // The current resolution depth is tracked by incrementing/decrementing as the depth first search progresses.
        var maxNodeModuleJsDepth = typeof options.maxNodeModuleJsDepth === "number" ? options.maxNodeModuleJsDepth : 0;
        var currentNodeModulesDepth = 0;
        // If a module has some of its imports skipped due to being at the depth limit under node_modules, then track
        // this, as it may be imported at a shallower depth later, and then it will need its skipped imports processed.
        var modulesWithElidedImports = new ts.Map();
        // Track source files that are source files found by searching under node_modules, as these shouldn't be compiled.
        var sourceFilesFoundSearchingNodeModules = new ts.Map();
        ts.tracing === null || ts.tracing === void 0 ? void 0 : ts.tracing.push("program" /* tracing.Phase.Program */, "createProgram", { configFilePath: options.configFilePath, rootDir: options.rootDir }, /*separateBeginAndEnd*/ true);
        ts.performance.mark("beforeProgram");
        var host = createProgramOptions.host || createCompilerHost(options);
        var configParsingHost = parseConfigHostFromCompilerHostLike(host);
        var skipDefaultLib = options.noLib;
        var getDefaultLibraryFileName = ts.memoize(function () { return host.getDefaultLibFileName(options); });
        var defaultLibraryPath = host.getDefaultLibLocation ? host.getDefaultLibLocation() : ts.getDirectoryPath(getDefaultLibraryFileName());
        var programDiagnostics = ts.createDiagnosticCollection();
        var currentDirectory = host.getCurrentDirectory();
        var supportedExtensions = ts.getSupportedExtensions(options);
        var supportedExtensionsWithJsonIfResolveJsonModule = ts.getSupportedExtensionsWithJsonIfResolveJsonModule(options, supportedExtensions);
        // Map storing if there is emit blocking diagnostics for given input
        var hasEmitBlockingDiagnostics = new ts.Map();
        var _compilerOptionsObjectLiteralSyntax;
        var moduleResolutionCache;
        var typeReferenceDirectiveResolutionCache;
        var actualResolveModuleNamesWorker;
        var hasInvalidatedResolution = host.hasInvalidatedResolution || ts.returnFalse;
        if (host.resolveModuleNames) {
            actualResolveModuleNamesWorker = function (moduleNames, containingFile, containingFileName, reusedNames, redirectedReference) { return host.resolveModuleNames(ts.Debug.checkEachDefined(moduleNames), containingFileName, reusedNames, redirectedReference, options, containingFile).map(function (resolved) {
                // An older host may have omitted extension, in which case we should infer it from the file extension of resolvedFileName.
                if (!resolved || resolved.extension !== undefined) {
                    return resolved;
                }
                var withExtension = ts.clone(resolved);
                withExtension.extension = ts.extensionFromPath(resolved.resolvedFileName);