feat(rules): 建立共享排版契约并收束 WebKit 与 Unicode 基线

test/spacing-detail.test.mjs

@@ -2,6 +2,7 @@
 // 在新引擎落地（回應使用者提問）。
 
 import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
 import { test } from "node:test";
 
 import { setupDom, countTag } from "./helpers.mjs";
@@ -78,3 +79,42 @@ test("間隔號：姓名 · 兩側不插 jz-hws（· 屬 CJK 標點，非西文
     createJuzhen(SPACING_ONLY).render(document.body);
     assert.equal(countTag(document.querySelector("p"), "jz-hws"), 0, "· 兩側皆不應有間隙");
 });
+
+// ----- ASCII 左括號（Safari 16 無 lookbehind 路徑）-----
+
+test("左括號：普通英數字後補間隙，連續樣式不漏匹配", () =>
+{
+    const { document } = setupDom("<p>A(b[c{中</p>");
+    createJuzhen(SPACING_ONLY).render(document.body);
+    assert.equal(countTag(document.querySelector("p"), "jz-hws"), 3);
+});
+
+test("左括號：dot-prefixed 英數字串段不補間隙", () =>
+{
+    const { document } = setupDom("<p>.foo(中</p><p>x.bar[文</p><p>.baz{字</p>");
+    createJuzhen(SPACING_ONLY).render(document.body);
+    for (const p of document.querySelectorAll("p"))
+    {
+        assert.equal(countTag(p, "jz-hws"), 0);
+    }
+});
+
+test("左括號：點號不在當前英數字 suffix 前時仍補間隙", () =>
+{
+    const { document } = setupDom("<p>.foo-bar(中</p>");
+    createJuzhen(SPACING_ONLY).render(document.body);
+    assert.equal(countTag(document.querySelector("p"), "jz-hws"), 1);
+});
+
+test("Safari 16 產物：spacing 源碼與發佈 JS 不得含 lookbehind 語法", () =>
+{
+    const lookbehindSyntax = /\(\?<([=!])/;
+    for (const path of [
+        new URL("../src/typeset/spacing.ts", import.meta.url),
+        new URL("../dist/juzhen.mjs", import.meta.url),
+        new URL("../dist/juzhen.iife.js", import.meta.url),
+    ])
+    {
+        assert.doesNotMatch(readFileSync(path, "utf8"), lookbehindSyntax, path.pathname);
+    }
+});