Support passing in dependencies directly via -f json -d file.json

[deanrad]

With example.json containing:
{"a":["sub/b"],"d":[],"fancy-main/not-index":[],"sub/b":["sub/c"],"sub/c":["d"]}

New feature:
./bin/dependo -f json -d example.json > example/index.html ; open example/index.html
Regression tested with:
./bin/dependo -f cjs lib/ > example/index.html ; open example/index.html

[auchenberg]

Why is there this special check for Commander.format !== "json"?

[auchenberg]

Looks good. I'm a but unsure about the above if-condition, once resolved. I'll merge, and make a new release.

[deanrad]

Because in json format you pass the file containing the deps data, you don't need spider files, making the CLI arg required only for the previous use cases.

[auchenberg]

We agree that to pass the file you need to pass the file via --deps as dependo -f json --deeps <file>, right?

The above condition is to display a nice help message if no arguments are passed like dependo. What case does the current condition cover? If I pass -f json, Commander.args anyway has a length?

[deanrad]

If I pass -f json, Commander.args anyway has a length?

Not correct. Commander.args doesn't include switches/options/whatever they're called :)

But see the latest diff - I think it will satisfy us both, and be simpler.

> dependo              # prints help
> dependo -f cjs       # prints help
> dependo -f json      # prints help
> dependo -f json  file.json   # does good
> dependo -f cjs  dir/         # does good

[auchenberg]

Totally makes sense to use pass the file as the "input" in first argument. 👍

[deanrad]

Cool- were on a roll !