allow multiple transformers

[boneskull]

the user should be able to use multiple transformers (in order).

this might get a little complex, because transformers expect a Report as input. this is starting to look like readable/writable streams a bit, where you can't read the output of a writable stream, unless it's a transform stream.

not that I'm not advocating for use of Node.js streams, as the horror of working with them is the reason I'm using observables

[boneskull]

see #24, but I think this ties in. the current state of things:

• "formatters" (csv, json, table, pipe/newline):
  • input: Object
  • output: string (no guarantees of machine-readability)
• "transformers" (numeric, stack-hash):
  • input: Report
  • output: Object
  • "inspect" is also essentially one of these. I smell a refactor coming
• ??? (proposed filter, redact):
  • input: Report
  • output: Report

Perhaps lumping these all together would make sense, and then declaring input/output types in order to be able to connect them.

It's also worth mentioning that the table formatter lives in the CLI package, which is probably not strictly necessary.

[boneskull]

closed by 45139e309e479166124630fe2b229223bdfd53d6