bug fixes, and performance improvements, and drawer

2026-09-27 18:44:51 -05:00
parent d48d8163a7
commit 2b9f8d64d7
52 changed files with 4913 additions and 778 deletions
@@ -0,0 +1,52 @@
+import type { MarkdownTree } from '../app/utils/markdown';
+import { expect, test } from 'bun:test';
+import { splitParagraphBreaks } from '../app/utils/markdown';
+
+test('paragraph splitting preserves nested formatting without mutating a cached parser tree', () => {
+    const tree = { nodes: [
+        ['p', {}, 'before', ['br', {}], ['strong', {}, 'after']],
+        ['blockquote', {}, 'one', ['br', {}], ['em', {}, 'two']],
+    ] } as MarkdownTree;
+    const original = structuredClone(tree);
+    const result = splitParagraphBreaks(tree);
+    expect(result.nodes).toEqual([
+        ['p', {}, 'before'],
+        ['p', {}, ['strong', {}, 'after']],
+        ['blockquote', {}, ['p', {}, 'one'], ['p', {}, ['em', {}, 'two']]],
+    ]);
+    expect(tree).toEqual(original);
+    expect(splitParagraphBreaks(tree)).toEqual(result);
+});
+
+test('br-free trees return by reference with no allocation', () => {
+    const tree = { nodes: [
+        ['p', {}, 'plain ', ['strong', {}, 'text']],
+        ['ul', {}, ['li', {}, 'one'], ['li', {}, 'two']],
+    ] } as MarkdownTree;
+    expect(splitParagraphBreaks(tree)).toBe(tree);
+});
+
+test('single newlines still split into sibling paragraphs', () => {
+    const tree = { nodes: [
+        ['p', {}, 'line one', ['br', {}], 'line two'],
+    ] } as MarkdownTree;
+    expect(splitParagraphBreaks(tree).nodes).toEqual([
+        ['p', {}, 'line one'],
+        ['p', {}, 'line two'],
+    ]);
+});
+
+test('nested changes rebuild only the affected path', () => {
+    const tree = { nodes: [
+        ['blockquote', {}, ['p', {}, 'kept']],
+        ['p', {}, 'split', ['br', {}], 'me'],
+    ] } as MarkdownTree;
+    const result = splitParagraphBreaks(tree);
+    expect(result).not.toBe(tree);
+    expect(result.nodes[0]).toBe(tree.nodes[0]);
+    expect(result.nodes).toEqual([
+        ['blockquote', {}, ['p', {}, 'kept']],
+        ['p', {}, 'split'],
+        ['p', {}, 'me'],
+    ]);
+});