Notes

Structure similar to codemirror:

text (ropes)
transactions
- changes
- invert changes (generates a revert)
- annotations (time changed etc)
- state effects
- additional editor state as facets
snapshots as an async view into current state
selections { anchor (nonmoving), head (moving) from/to } -> SelectionSet with a primary
- cursor is just a single range selection
markers track a position inside text that synchronizes with edits
{ doc, selection, update(), splice, changes(), facets, tabSize, identUnit, lineSeparator, changeFilter/transactionFilter to modify stuff before }
view (actual UI)
viewport(Lines) -> what's actually visible
extend the view via Decorations (inline styling) or Components (UI)
- mark / wieget / line / replace decoration
commands (transform state)
movement
selection extension
deletion
indentation
keymap (maps keys to commands)
history (undo tree via immutable ropes)
- undoes transactions via reverts
(collab mode)
gutter (line numbers, diagnostic marker, etc) -> ties into UI components
rangeset/span -> mappable over changes (can be a marker primitive?)
syntax (treesitter)
fold
selections (select mode/multiselect)
matchbrackets
closebrackets
special-chars (shows dots etc for specials)
panel (for UI: file pickers, search dialogs, etc)
tooltip (for UI)
search (regex)
lint (async linters)
lsp
highlight
stream-syntax
autocomplete
comment (gc, etc for auto commenting)
snippets
terminal mode?
plugins can contain more commands/ui abstractions to use elsewhere
languageData as presets for each language (syntax, indent, comment, etc)

Vim stuff: