Interface CreateSourceFileOptions

Controls the format the file is detected as - this can be derived from only the path and files on disk, but needs to be done with a module resolution cache in scope to be performant. This is usually undefined for compilations that do not have moduleResolution values of node16 or nodenext.

Controls how module-y-ness is set for the given file. Usually the result of calling getSetExternalModuleIndicator on a valid CompilerOptions object. If not present, the default check specified by isFileProbablyExternalModule will be used to set the field.