side quests for lsp server (#2119)

* all

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* more

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* side quests only

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* updates

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* updates

Signed-off-by: Jess Frazelle <github@jessfraz.com>

---------

Signed-off-by: Jess Frazelle <github@jessfraz.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/lang/errors.ts

@@ -1,5 +1,8 @@
-import { Diagnostic } from '@codemirror/lint'
 import { KclError as RustKclError } from '../wasm-lib/kcl/bindings/KclError'
+import { Diagnostic as CodeMirrorDiagnostic } from '@codemirror/lint'
+import { posToOffset } from 'editor/plugins/lsp/util'
+import { Diagnostic as LspDiagnostic } from 'vscode-languageserver-protocol'
+import { Text } from '@codemirror/state'
 
 type ExtractKind<T> = T extends { kind: infer K } ? K : never
 export class KCLError {
@@ -81,11 +84,47 @@ export class KCLUndefinedValueError extends KCLError {
   }
 }
 
+/**
+ * Maps the lsp diagnostic to an array of KclErrors.
+ * Currently the diagnostics are all errors, but in the future they could include lints.
+ * */
+export function lspDiagnosticsToKclErrors(
+  doc: Text,
+  diagnostics: LspDiagnostic[]
+): KCLError[] {
+  return diagnostics
+    .flatMap(
+      ({ range, message }) =>
+        new KCLError('unexpected', message, [
+          [posToOffset(doc, range.start)!, posToOffset(doc, range.end)!],
+        ])
+    )
+    .filter(({ sourceRanges }) => {
+      const [from, to] = sourceRanges[0]
+      return (
+        from !== null && to !== null && from !== undefined && to !== undefined
+      )
+    })
+    .sort((a, b) => {
+      const c = a.sourceRanges[0][0]
+      const d = b.sourceRanges[0][0]
+      switch (true) {
+        case c < d:
+          return -1
+        case c > d:
+          return 1
+      }
+      return 0
+    })
+}
+
 /**
  * Maps the KCL errors to an array of CodeMirror diagnostics.
  * Currently the diagnostics are all errors, but in the future they could include lints.
  * */
-export function kclErrToDiagnostic(errors: KCLError[]): Diagnostic[] {
+export function kclErrorsToDiagnostics(
+  errors: KCLError[]
+): CodeMirrorDiagnostic[] {
   return errors?.flatMap((err) => {
     return err.sourceRanges.map(([from, to]) => {
       return { from, to, message: err.msg, severity: 'error' }