tests/cases/conformance/parser/ecmascript5/RegressionTests/parser509546_2.ts(3,14): error TS1148: Cannot compile external modules unless the '--module' flag is provided. ==== tests/cases/conformance/parser/ecmascript5/RegressionTests/parser509546_2.ts (1 errors) ==== "use strict"; export class Logger { ~~~~~~ !!! error TS1148: Cannot compile external modules unless the '--module' flag is provided. public }