Normative: New pattern matching design

assets/expand.js

@@ -0,0 +1,44 @@
+const state = {
+  __folded: true,
+  get folded() {
+    try {
+      const v = localStorage.getItem("folded");
+      return v === "true" || v === null;
+    } catch {
+      return this.__folded;
+    }
+  },
+  set folded(val) {
+    this.__folded = val;
+    try {
+      localStorage.setItem("folded", val);
+    } catch {}
+    document.body.classList.toggle("folded", val);
+  },
+};
+state.folded = state.folded;
+
+const button = document.querySelector("#expand");
+button.addEventListener("click", () => {
+  state.folded = !state.folded;
+  if (state.folded) {
+    const old = scrollY;
+    location.hash = "";
+    scrollTo(0, old);
+  }
+});
+
+function onHashChange(event) {
+  const target = document.getElementById(location.hash.slice(1));
+  if (!target) return;
+  if (!state.folded) return;
+  for (const el of document.querySelectorAll(".fold")) {
+    if (el.contains(target)) {
+      state.folded = false;
+      target.scrollIntoView(true);
+      setExpand(false);
+    }
+  }
+}
+window.addEventListener("hashchange", onHashChange);
+window.addEventListener("DOMContentLoaded", onHashChange);

package.json

@@ -1,19 +1,19 @@
 {
-	"private": true,
-	"name": "proposal-pattern-matching",
-	"description": "A repository for ECMAScript pattern matching proposals.",
-	"scripts": {
-		"start": "npm run build -- --watch",
-		"build": "SOURCE_DATE_EPOCH=$(git log -1 --pretty=\"format:%ct\" spec.emu) ecmarkup spec.emu index.html --load-biblio @tc39/ecma262-biblio --lint-spec"
-	},
-	"homepage": "https://github.com/tc39/proposal-pattern-matching#readme",
-	"repository": {
-		"type": "git",
-		"url": "git+https://github.com/tc39/proposal-pattern-matching.git"
-	},
-	"license": "MIT",
-	"devDependencies": {
-		"@tc39/ecma262-biblio": "^2.1.2631",
-		"ecmarkup": "^17.1.1"
-	}
+  "private": true,
+  "name": "proposal-pattern-matching",
+  "description": "A repository for ECMAScript pattern matching proposals.",
+  "scripts": {
+    "start": "npm run build -- --watch",
+    "build": "SOURCE_DATE_EPOCH=$(git log -1 --pretty=\"format:%ct\" spec.emu) ecmarkup spec.emu index.html --load-biblio @tc39/ecma262-biblio --lint-spec --assets-dir assets --mark-effects"
+  },
+  "homepage": "https://github.com/tc39/proposal-pattern-matching#readme",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/tc39/proposal-pattern-matching.git"
+  },
+  "license": "MIT",
+  "devDependencies": {
+    "@tc39/ecma262-biblio": "^2.1.2653",
+    "ecmarkup": "^18.0.0"
+  }
 }