fix: TypeScript compilation errors

- Fix symbol index type errors with type assertions
- Remove unused getDefaultFormatting function
- Add null check for match[1] in detectIndent
- Remove unused contentWithoutImport variable

Author: jdalton

src/utils/config.mts

@@ -395,9 +395,7 @@ export function updateConfigValue<Key extends keyof LocalConfig>(
         // Now update with new values.
         editor.update(configToSave)
         // Use the editor's internal stringify which preserves formatting.
-        // We need to extract the content without symbols and then stringify
-        // with the formatting metadata.
-        const { getEditableJsonClass: _, ...contentWithoutImport } = editor.content as any
+        // Extract the formatting symbols from the content.
         const INDENT_SYMBOL = Symbol.for('indent')
         const NEWLINE_SYMBOL = Symbol.for('newline')
         const indent = (editor.content as any)[INDENT_SYMBOL] ?? 2

src/utils/editable-json.mts

@@ -42,7 +42,7 @@ interface EditableJsonSaveOptions {
  */
 function detectIndent(json: string): string | number {
   const match = json.match(/^[{[][\r\n]+(\s+)/m)
-  if (!match) {
+  if (!match || !match[1]) {
     return 2
   }
   const indent = match[1]
@@ -61,15 +61,6 @@ function detectNewline(json: string): string {
   return match ? match[0] : '\n'
 }
 
-/**
- * Get default formatting for JSON files.
- */
-function getDefaultFormatting(): JsonFormatting {
-  return {
-    indent: 2,
-    newline: '\n',
-  }
-}
 
 /**
  * Sort object keys alphabetically.
@@ -289,8 +280,9 @@ export class EditableJson<T = Record<string, unknown>> {
     const parsed = parseJson(data)
     const indent = detectIndent(data)
     const newline = detectNewline(data)
-    parsed[INDENT_SYMBOL] = indent
-    parsed[NEWLINE_SYMBOL] = newline
+    // Use type assertion to allow symbol indexing.
+    ;(parsed as any)[INDENT_SYMBOL] = indent
+    ;(parsed as any)[NEWLINE_SYMBOL] = newline
     this._content = parsed as Record<string | symbol, unknown>
     return this
   }