tests/cases/compiler/separateCompilationPlainFile-System.ts(2,1): error TS1208: Cannot compile namespaces when the '--separateCompilation' flag is provided.
==== tests/cases/compiler/separateCompilationPlainFile-System.ts (1 errors) ====
declare function run(a: number): void;
~~~~~~~
!!! error TS1208: Cannot compile namespaces when the '--separateCompilation' flag is provided.
run(1);