$TESTDATA_DIR$/sourceMapRoot/foo/file1.kt
$TESTDATA_DIR$/sourceMapRoot/bar/file2.kt
$TESTDATA_DIR$/sourceMapRoot/bar/baz/file3.kt
$TESTDATA_DIR$/sourceMapRoot/foo/baz/file4.kt
-no-stdlib
-source-map
-source-map-base-dirs
$TESTDATA_DIR$/sourceMapRoot/foo
-output
$TEMP_DIR$/out.js