Function containsOnlyAmbientModules

test/fixtures/snapshot/typescript.js:119966–119974

* For script files that contains only ambient external modules, although they are not actually external module files, * they can only be consumed via importing elements from them. Regular script files cannot consume them. Therefore, * there are no point to rebuild all script files

(sourceFile)

         * in the file is not ambient external module, we treat it as a regular script file.
         */
        function containsOnlyAmbientModules(sourceFile) {
            for (var _i = 0, _a = sourceFile.statements; _i < _a.length; _i++) {
                var statement = _a[_i];
                if (!ts.isModuleWithStringLiteralName(statement)) {
                    return false;
                }
            }
            return true;
        }
        /**
         * Return true if file contains anything that augments to global scope we need to build them as if
         * they are global files as well as module