refactor selections (#876)

* migrate selection types

* extract selection event into selections.ts

* move code-mirror selection functions into selections.ts

* move more selection logit out of code mirror and engine connection

* add selection functions pure

* tidy up naming

* write a novel about how selections work

* final comments

src/components/Toolbar/EqualAngle.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { Program, Value, VariableDeclarator } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,

src/components/Toolbar/EqualLength.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { Program, Value, VariableDeclarator } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,

src/components/Toolbar/HorzVert.tsx

@@ -1,4 +1,5 @@
 import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { Program, ProgramMemory, Value } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,
@@ -10,7 +11,6 @@ import {
   transformAstSketchLines,
 } from '../../lang/std/sketchcombos'
 import { kclManager } from 'lang/KclSinglton'
-import { Selections } from 'useStore'
 
 export function horzVertInfo(
   selectionRanges: Selections,

src/components/Toolbar/Intersect.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { BinaryPart, Program, Value, VariableDeclarator } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,

src/components/Toolbar/RemoveConstrainingValues.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { Program, Value } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,

src/components/Toolbar/SetAbsDistance.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { BinaryPart, Program, Value } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,

src/components/Toolbar/SetAngleBetween.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { BinaryPart, Program, Value, VariableDeclarator } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,

src/components/Toolbar/SetHorzVertDistance.tsx

@@ -14,7 +14,7 @@ import { GetInfoModal, createInfoModal } from '../SetHorVertDistanceModal'
 import { createLiteral, createVariableDeclaration } from '../../lang/modifyAst'
 import { removeDoubleNegatives } from '../AvailableVarsHelpers'
 import { kclManager } from 'lang/KclSinglton'
-import { Selections } from 'useStore'
+import { Selections } from 'lib/selections'
 
 const getModalInfo = createInfoModal(GetInfoModal)
 

src/components/Toolbar/setAngleLength.tsx

@@ -1,4 +1,5 @@
-import { Selections, toolTips } from '../../useStore'
+import { toolTips } from '../../useStore'
+import { Selections } from 'lib/selections'
 import { BinaryPart, Program, Value } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,