Function transformModule

test/fixtures/snapshot/typescript.js:104345–105814

(context)

var ts;
(function (ts) {
    function transformModule(context) {
        function getTransformModuleDelegate(moduleKind) {
            switch (moduleKind) {
                case ts.ModuleKind.AMD: return transformAMDModule;
                case ts.ModuleKind.UMD: return transformUMDModule;
                default: return transformCommonJSModule;
            }
        }
        var factory = context.factory, emitHelpers = context.getEmitHelperFactory, startLexicalEnvironment = context.startLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration;
        var compilerOptions = context.getCompilerOptions();
        var resolver = context.getEmitResolver();
        var host = context.getEmitHost();
        var languageVersion = ts.getEmitScriptTarget(compilerOptions);
        var moduleKind = ts.getEmitModuleKind(compilerOptions);
        var previousOnSubstituteNode = context.onSubstituteNode;
        var previousOnEmitNode = context.onEmitNode;
        context.onSubstituteNode = onSubstituteNode;
        context.onEmitNode = onEmitNode;
        context.enableSubstitution(208 /* SyntaxKind.CallExpression */); // Substitute calls to imported/exported symbols to avoid incorrect `this`.
        context.enableSubstitution(210 /* SyntaxKind.TaggedTemplateExpression */); // Substitute calls to imported/exported symbols to avoid incorrect `this`.
        context.enableSubstitution(79 /* SyntaxKind.Identifier */); // Substitutes expression identifiers with imported/exported symbols.
        context.enableSubstitution(221 /* SyntaxKind.BinaryExpression */); // Substitutes assignments to exported symbols.
        context.enableSubstitution(297 /* SyntaxKind.ShorthandPropertyAssignment */); // Substitutes shorthand property assignments for imported/exported symbols.
        context.enableEmitNotification(305 /* SyntaxKind.SourceFile */); // Restore state when substituting nodes in a file.
        var moduleInfoMap = []; // The ExternalModuleInfo for each file.
        var deferredExports = []; // Exports to defer until an EndOfDeclarationMarker is found.
        var currentSourceFile; // The current file.
        var currentModuleInfo; // The ExternalModuleInfo for the current file.
        var noSubstitution = []; // Set of nodes for which substitution rules should be ignored.
        var needUMDDynamicImportHelper;
        return ts.chainBundle(context, transformSourceFile);
        /**
         * Transforms the module aspects of a SourceFile.
         *
         * @param node The SourceFile node.
         */
        function transformSourceFile(node) {
            if (node.isDeclarationFile ||
                !(ts.isEffectiveExternalModule(node, compilerOptions) ||
                    node.transformFlags & 4194304 /* TransformFlags.ContainsDynamicImport */ ||
                    (ts.isJsonSourceFile(node) && ts.hasJsonModuleEmitEnabled(compilerOptions) && ts.outFile(compilerOptions)))) {
                return node;
            }
            currentSourceFile = node;
            currentModuleInfo = ts.collectExternalModuleInfo(context, node, resolver, compilerOptions);
            moduleInfoMap[ts.getOriginalNodeId(node)] = currentModuleInfo;
            // Perform the transformation.
            var transformModule = getTransformModuleDelegate(moduleKind);
            var updated = transformModule(node);
            currentSourceFile = undefined;
            currentModuleInfo = undefined;
            needUMDDynamicImportHelper = false;
            return updated;
        }
        function shouldEmitUnderscoreUnderscoreESModule() {
            if (!currentModuleInfo.exportEquals && ts.isExternalModule(currentSourceFile)) {
                return true;
            }