This fixes the situation where the source map source name is the full name of the file, potentially leaking information in the source map which is undesirable. This allows specifying a base (as well as specifies the base when doing a transpile) which will make the source file listed as relative of the source.
This fixes the situation where the source map source name is the full name of the file, potentially leaking information in the source map which is undesirable. This allows specifying a base (as well as specifies the base when doing a transpile) which will make the source file listed as relative of the source.