ts defs

[Fil]

bugs fixed:

• Plot.valueof(undefined, () => {}) crashed
• Plot.map("foo") crashed
• Plot.selectMinX potentially inserted undefined in the facet index
• mid(x1, x2) was wrongly typed (it expected a data argument)

[duaneatat]

will take a look asap! let's merge into main though, the ts-testing branch is just a temporary branch

[Fil]

rebased on main

[Fil]

I'm going to reboot this. I want the names and the autocomplete to match the API documentation exactly.

For a low-level example I want to type an index into a channel as index and channel, not as number and any[]. I want to remove nullish and be explicit about the difference between null and undefined.

For a high level example, a Dot mark options object will be DotOptions and explicitly list all the fields that make sense for dots. I just need to figure out how to make that an extension of a common MarkOptions object.