Use optional chaining syntax

core

@@ -1 +1 @@
-Subproject commit 880688c2b48c361489dacd3b4538daf1ee23cc72
+Subproject commit 7afe377eb0d8db25aaed88bf61318da3dd2a5636

extension/main.js

@@ -143,7 +143,7 @@ function getPlatformOs() {
         },
         afterNavigated: async (query, result) => {
             // Ignore the command history
-            if (query && query.startsWith(":")) return;
+            if (query?.startsWith(":")) return;
 
             // Only keep the latest 100 of search history.
             let historyItem = await HistoryCommand.record(query, result, maxSize = 100);
@@ -183,7 +183,7 @@ function getPlatformOs() {
         },
         onAppend: (query) => {
             query = query.replaceAll("/", "").trim();
-            if (rustcSearcher.searchIndex && rustcSearcher.searchIndex.length > 0) {
+            if (rustcSearcher?.searchIndex?.length > 0) {
                 return [{
                     content: rustcSearcher.getSearchUrl(query),
                     description: `Search nightly rustc docs ${c.match(query)} on ${rustcSearcher.getRootPath()}`,

extension/script/docs-rs.js

@@ -189,7 +189,7 @@ function getState(version) {
 function insertAddToExtensionElement(state) {
     // Remove previous element.
     let el = document.querySelector(".add-to-extension");
-    if (el && el.parentElement) {
+    if (el?.parentElement) {
         el.parentElement.remove();
     }
 

extension/script/rust-lang-release.js

@@ -29,7 +29,7 @@ document.addEventListener("DOMContentLoaded", () => {
         let fixVersions = versions
             .filter(v => v.minor === version.minor && v.major === version.major && v.fix !== "0")
             .sort((a, b) => parseInt(a.fix) - parseInt(b.fix));
-        if (fixVersions && fixVersions.length > 0) {
+        if (fixVersions?.length > 0) {
             fixVersions = fixVersions.map(fv => `<a href="${fv.anchor}"><small>${fv.number}</small></a>`).join(" , ");
             html += `<div style="margin-top: 0.3rem">${fixVersions}</div>`;
         }

extension/script/rustc.js

@@ -8,7 +8,7 @@ document.addEventListener("DOMContentLoaded", () => {
         response => {
             let now = new Date();
             let today = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 0, 0, 0);
-            if (response && response.version && today <= Date.parse(response.version)) {
+            if (response?.version && today <= Date.parse(response.version)) {
                 // Check version to ensure update search index once a day.
                 return;
             }

extension/search/docs/crate-doc.js

@@ -29,7 +29,7 @@ class CrateDocSearch {
         let [crateName, keyword] = CrateDocSearch.parseCrateDocsSearchKeyword(query);
 
         let searcher = null;
-        if (this.cachedCrateSearcher && this.cachedCrateSearcher.name === crateName) {
+        if (this.cachedCrateSearcher?.name === crateName) {
             searcher = this.cachedCrateSearcher;
         } else {
             let crates = await CrateDocManager.getCrates();

extension/statistics.js

@@ -157,7 +157,7 @@ class Statistics {
      * @returns {string|*} return the search type result if matched, otherwise return null.
      */
     static parseSearchType({ query, content, description }) {
-        let stat = STATS_PATTERNS.find(item => item.pattern && item.pattern.test(query));
+        let stat = STATS_PATTERNS.find(item => item.pattern?.test(query));
         if (stat) {
             return stat;
         } else {