From b7d6a429b5abd50fa62e50c72117a8387e43c032 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Fri, 27 May 2022 22:21:41 +0200
Subject: [PATCH 1/3] Add "arrow-parens" eslint rule

---
 src/librustdoc/html/static/.eslintrc.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/librustdoc/html/static/.eslintrc.js b/src/librustdoc/html/static/.eslintrc.js
index 7afd09b34d30d..3ad7f4d9e064d 100644
--- a/src/librustdoc/html/static/.eslintrc.js
+++ b/src/librustdoc/html/static/.eslintrc.js
@@ -54,5 +54,6 @@ module.exports = {
         "comma-style": ["error", "last"],
         "max-len": ["error", { "code": 100, "tabWidth": 4 }],
         "eol-last": ["error", "always"],
+        "arrow-parens": ["error", "as-needed"],
     }
 };

From 3741a88ad7d6d8b636e997ec7ebe6739718ebddf Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Fri, 27 May 2022 22:22:22 +0200
Subject: [PATCH 2/3] Add "no-unused-vars" eslint rule

---
 src/librustdoc/html/static/.eslintrc.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/librustdoc/html/static/.eslintrc.js b/src/librustdoc/html/static/.eslintrc.js
index 3ad7f4d9e064d..5a79610b73633 100644
--- a/src/librustdoc/html/static/.eslintrc.js
+++ b/src/librustdoc/html/static/.eslintrc.js
@@ -55,5 +55,12 @@ module.exports = {
         "max-len": ["error", { "code": 100, "tabWidth": 4 }],
         "eol-last": ["error", "always"],
         "arrow-parens": ["error", "as-needed"],
+        "no-unused-vars": [
+            "error",
+            {
+                "argsIgnorePattern": "^_",
+                "varsIgnorePattern": "^_"
+            }
+        ],
     }
 };

From 334f12c28e0aec80f29b43ad289362c484269a8d Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Fri, 27 May 2022 22:30:19 +0200
Subject: [PATCH 3/3] Add "eqeqeq" eslint rule

---
 src/librustdoc/html/static/.eslintrc.js | 1 +
 src/librustdoc/html/static/js/main.js   | 4 ++--
 src/librustdoc/html/static/js/search.js | 8 ++++----
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/librustdoc/html/static/.eslintrc.js b/src/librustdoc/html/static/.eslintrc.js
index 5a79610b73633..997def1657fa0 100644
--- a/src/librustdoc/html/static/.eslintrc.js
+++ b/src/librustdoc/html/static/.eslintrc.js
@@ -62,5 +62,6 @@ module.exports = {
                 "varsIgnorePattern": "^_"
             }
         ],
+        "eqeqeq": "error",
     }
 };
diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index 0fbc2d0e33c90..548aeedd03384 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -97,12 +97,12 @@ function showMain() {
 //
 // So I guess you could say things are getting pretty interoperable.
 function getVirtualKey(ev) {
-    if ("key" in ev && typeof ev.key != "undefined") {
+    if ("key" in ev && typeof ev.key !== "undefined") {
         return ev.key;
     }
 
     const c = ev.charCode || ev.keyCode;
-    if (c == 27) {
+    if (c === 27) {
         return "Escape";
     }
     return String.fromCharCode(c);
diff --git a/src/librustdoc/html/static/js/search.js b/src/librustdoc/html/static/js/search.js
index c784d69dcd66f..c726aeeff4729 100644
--- a/src/librustdoc/html/static/js/search.js
+++ b/src/librustdoc/html/static/js/search.js
@@ -70,7 +70,7 @@ function printTab(nb) {
     });
     if (foundCurrentTab && foundCurrentResultSet) {
         searchState.currentTab = nb;
-    } else if (nb != 0) {
+    } else if (nb !== 0) {
         printTab(0);
     }
 }
@@ -200,7 +200,7 @@ function initSearch(rawSearchIndex) {
      * @return {boolean}
      */
     function isPathStart(parserState) {
-        return parserState.userQuery.slice(parserState.pos, parserState.pos + 2) == "::";
+        return parserState.userQuery.slice(parserState.pos, parserState.pos + 2) === "::";
     }
 
     /**
@@ -211,7 +211,7 @@ function initSearch(rawSearchIndex) {
      * @return {boolean}
      */
     function isReturnArrow(parserState) {
-        return parserState.userQuery.slice(parserState.pos, parserState.pos + 2) == "->";
+        return parserState.userQuery.slice(parserState.pos, parserState.pos + 2) === "->";
     }
 
     /**
@@ -1726,7 +1726,7 @@ function initSearch(rawSearchIndex) {
             crates = " in <select id=\"crate-search\"><option value=\"All crates\">" +
                 "All crates</option>";
             for (const c of window.ALL_CRATES) {
-                crates += `<option value="${c}" ${c == filterCrates && "selected"}>${c}</option>`;
+                crates += `<option value="${c}" ${c === filterCrates && "selected"}>${c}</option>`;
             }
             crates += "</select>";
         }