Respect ANSI codes when applying maxWidth

[elliot-nelson]

This was discussed originally in #46 but I thought I'd break it into a separate (possibly solvable) issue.

That discussion reminded me of https://github.com/chalk/wrap-ansi, which might solve the problem outright if we are willing to add a (small but certainly not zero weight) dependency to sywac.

It's not highest priority but I think scratching this issue off the list makes it easier to push/promote the idea of user-created styles for sywac, since you wouldn't need to worry about strange splitting if you don't massage the maxWidth.

[nexdrew]

Adding wrap-ansi as a dependency currently adds 10 packages as runtime dependencies:

└─┬ wrap-ansi@6.2.0
  ├─┬ ansi-styles@4.2.1
  │ ├── @types/color-name@1.1.1
  │ └─┬ color-convert@2.0.1
  │   └── color-name@1.1.4
  ├─┬ string-width@4.2.0
  │ ├── emoji-regex@8.0.0
  │ ├── is-fullwidth-code-point@3.0.0
  │ └── strip-ansi@6.0.0 deduped
  └─┬ strip-ansi@6.0.0
    └── ansi-regex@5.0.0

I'm not sure it's worth it.

I think I'd rather do one of the following:

1. Make the logic in buffer.js smarter, to mimic functionality that wrapAnsi() provides
2. Offer an optional secondary package (with the wrap-ansi dependency) that can be plugged into a sywac instance (e.g. a customized "help buffer" instance)
3. Offer an optional package that exposes a pre-configured opinionated sywac instance with the additional functionality (with the wrap-ansi dependency), similar to @tryghost/pretty-cli

I get that relying on other packages can be annoying, but I'm super sensitive about keeping the core sywac package as lean as possible.

What do you think?

[elliot-nelson]

Totally fair. I have been playing with lean npx-style CLI commands and the difference between 3 seconds npx install and 6 seconds npx install is a big difference. The fact that (for example) sywac doesn't ship out of the box with e.g. chalk or kleur (thus letting you pick one to suit your own needs) is a big plus.

Knowing nothing about it my leaning would be towards a basic version of option 1 - just enough that typical chalk/kleur styling doesn't break wrapping. Down the road if someone was itching to use a bunch of double wide emojis or w/e in their terminal, then option 2 or 3 could work. (Or, if .wrapText() was just exposed as a style callback, then it could be overriden and you wouldn't even need extra packages - it would be up to the user to specify a style of { wrapText: require('wrap-ansi') }).

[nexdrew]

I like the idea of a "wrap text" style hook. Maybe we should look into that possibility.