Function addExportStarIfNeeded

test/fixtures/snapshot/typescript.js:106048–106096

* Adds an exportStar function to a statement list if it is needed for the file. * * @param statements A statement list.

(statements)

         * @param statements A statement list.
         */
        function addExportStarIfNeeded(statements) {
            if (!moduleInfo.hasExportStarsToExportValues) {
                return;
            }
            // when resolving exports local exported entries/indirect exported entries in the module
            // should always win over entries with similar names that were added via star exports
            // to support this we store names of local/indirect exported entries in a set.
            // this set is used to filter names brought by star expors.
            // local names set should only be added if we have anything exported
            if (!moduleInfo.exportedNames && moduleInfo.exportSpecifiers.size === 0) {
                // no exported declarations (export var ...) or export specifiers (export {x})
                // check if we have any non star export declarations.
                var hasExportDeclarationWithExportClause = false;
                for (var _i = 0, _a = moduleInfo.externalImports; _i < _a.length; _i++) {
                    var externalImport = _a[_i];
                    if (externalImport.kind === 272 /* SyntaxKind.ExportDeclaration */ && externalImport.exportClause) {
                        hasExportDeclarationWithExportClause = true;
                        break;
                    }
                }
                if (!hasExportDeclarationWithExportClause) {
                    // we still need to emit exportStar helper
                    var exportStarFunction_1 = createExportStarFunction(/*localNames*/ undefined);
                    statements.push(exportStarFunction_1);
                    return exportStarFunction_1.name;
                }
            }
            var exportedNames = [];
            if (moduleInfo.exportedNames) {
                for (var _b = 0, _c = moduleInfo.exportedNames; _b < _c.length; _b++) {
                    var exportedLocalName = _c[_b];
                    if (exportedLocalName.escapedText === "default") {
                        continue;
                    }
                    // write name of exported declaration, i.e 'export var x...'
                    exportedNames.push(factory.createPropertyAssignment(factory.createStringLiteralFromNode(exportedLocalName), factory.createTrue()));
                }
            }
            var exportedNamesStorageRef = factory.createUniqueName("exportedNames");
            statements.push(factory.createVariableStatement(
            /*modifiers*/ undefined, factory.createVariableDeclarationList([
                factory.createVariableDeclaration(exportedNamesStorageRef, 
                /*exclamationToken*/ undefined, 
                /*type*/ undefined, factory.createObjectLiteralExpression(exportedNames, /*multiline*/ true))
            ])));
            var exportStarFunction = createExportStarFunction(exportedNamesStorageRef);
            statements.push(exportStarFunction);
            return exportStarFunction.name;
        }
        /**
         * Creates an exportStar function for the file, with an optional set of excluded local
         * names.