chore: import upstream snapshot with attribution

2026-07-13 13:32:57 +08:00
commit cd420f9332
4811 changed files with 884702 additions and 0 deletions
@@ -0,0 +1,60 @@
+import { closeBrackets } from "@codemirror/autocomplete";
+import { indentWithTab, history, historyKeymap, undo, redo } from "@codemirror/commands";
+import { bracketMatching } from "@codemirror/language";
+import { lintKeymap } from "@codemirror/lint";
+import { highlightSelectionMatches } from "@codemirror/search";
+import { Prec, type Extension } from "@codemirror/state";
+import {
+  drawSelection,
+  dropCursor,
+  highlightActiveLine,
+  highlightActiveLineGutter,
+  highlightSpecialChars,
+  keymap,
+  lineNumbers,
+} from "@codemirror/view";
+
+export function getEditorSetup(showLineNumbers = true, showHighlights = true): Array<Extension> {
+  const options = [
+    drawSelection(),
+    dropCursor(),
+    history(),
+    bracketMatching(),
+    closeBrackets(),
+    Prec.highest(
+      keymap.of([
+        {
+          key: "Mod-Enter",
+          run: () => {
+            return true;
+          },
+          preventDefault: false,
+        },
+      ])
+    ),
+    // Explicit undo/redo keybindings with high precedence
+    Prec.high(
+      keymap.of([
+        { key: "Mod-z", run: undo },
+        { key: "Mod-Shift-z", run: redo },
+        { key: "Mod-y", run: redo },
+      ])
+    ),
+    keymap.of([indentWithTab, ...historyKeymap, ...lintKeymap]),
+  ];
+
+  if (showLineNumbers) {
+    options.push(lineNumbers());
+  }
+
+  if (showHighlights) {
+    options.push([
+      highlightActiveLineGutter(),
+      highlightSpecialChars(),
+      highlightActiveLine(),
+      highlightSelectionMatches(),
+    ]);
+  }
+
+  return options;
+}