Introduced use of conditional chaining operator

.eslintrc.json

@@ -1,7 +1,7 @@
 {
     "parser": "@babel/eslint-parser",
     "parserOptions": {
-        "ecmaVersion": 9,
+        "ecmaVersion": 2022,
         "ecmaFeatures": {
             "impliedStrict": true
         },

src/core/Recipe.mjs

@@ -230,14 +230,12 @@ class Recipe  {
                 this.lastRunOp = op;
             } catch (err) {
                 // Return expected errors as output
-                if (err instanceof OperationError ||
+                if (err instanceof OperationError || err?.type === "OperationError") {
-                    (err.type && err.type === "OperationError")) {
                     // Cannot rely on `err instanceof OperationError` here as extending
                     // native types is not fully supported yet.
                     dish.set(err.message, "string");
                     return i;
-                } else if (err instanceof DishError ||
+                } else if (err instanceof DishError || err?.type === "DishError") {
-                    (err.type && err.type === "DishError")) {
                     dish.set(err.message, "string");
                     return i;
                 } else {

src/core/operations/DetectFileType.mjs

@@ -65,7 +65,7 @@ class DetectFileType extends Operation {
 Extension:   ${type.extension}
 MIME type:   ${type.mime}\n`;
 
-                if (type.description && type.description.length) {
+                if (type?.description?.length) {
                     output += `Description: ${type.description}\n`;
                 }
 

src/core/operations/ScanForEmbeddedFiles.mjs

@@ -60,7 +60,7 @@ class ScanForEmbeddedFiles extends Operation {
   Extension:   ${type.fileDetails.extension}
   MIME type:   ${type.fileDetails.mime}\n`;
 
-                if (type.fileDetails.description && type.fileDetails.description.length) {
+                if (type?.fileDetails?.description?.length) {
                     output += `  Description: ${type.fileDetails.description}\n`;
                 }
             });

src/core/vendor/gost/gostCipher.mjs

@@ -198,7 +198,7 @@ function randomSeed(e) {
 function buffer(d) {
     if (d instanceof CryptoOperationData)
         return d;
-    else if (d && d.buffer && d.buffer instanceof CryptoOperationData)
+    else if (d && d?.buffer instanceof CryptoOperationData)
         return d.byteOffset === 0 && d.byteLength === d.buffer.byteLength ?
                 d.buffer : new Uint8Array(new Uint8Array(d, d.byteOffset, d.byteLength)).buffer;
     else
@@ -2076,7 +2076,7 @@ function GostCipher(algorithm) // <editor-fold defaultstate="collapsed">
                     ((algorithm.keyWrapping || 'NO') !== 'NO' ? algorithm.keyWrapping : '') + 'KW' :
                     (algorithm.block || 'ECB') + ((algorithm.block === 'CFB' || algorithm.block === 'OFB' ||
                     (algorithm.block === 'CTR' && algorithm.version === 2015)) &&
-                    algorithm.shiftBits && algorithm.shiftBits !== this.blockLength ? '-' + algorithm.shiftBits : '') +
+                    algorithm?.shiftBits !== this.blockLength ? '-' + algorithm.shiftBits : '') +
                     (algorithm.padding ? '-' + (algorithm.padding || (algorithm.block === 'CTR' ||
                             algorithm.block === 'CFB' || algorithm.block === 'OFB' ? 'NO' : 'ZERO')) + 'PADDING' : '') +
                     ((algorithm.keyMeshing || 'NO') !== 'NO' ? '-CPKEYMESHING' : '')) +

src/core/vendor/gost/gostCoding.mjs

@@ -48,7 +48,7 @@ var Date = Date;
 function buffer(d) {
     if (d instanceof CryptoOperationData)
         return d;
-    else if (d && d.buffer && d.buffer instanceof CryptoOperationData)
+    else if (d && d?.buffer instanceof CryptoOperationData)
         return d.byteOffset === 0 && d.byteLength === d.buffer.byteLength ?
                 d.buffer : new Uint8Array(new Uint8Array(d, d.byteOffset, d.byteLength)).buffer;
     else

src/core/vendor/gost/gostCrypto.mjs

@@ -611,7 +611,7 @@ if (!Promise) {
                             return;
                         }
                         value = mswrap(value);
-                        if (value && value.then && value.then.call) {
+                        if (value && value?.then?.call) {
                             value.then(resolve, reject);
                         } else {
                             resolve(value);
@@ -627,7 +627,7 @@ if (!Promise) {
                             return;
                         }
                         reason = mswrap(reason);
-                        if (reason && reason.then && reason.then.call) {
+                        if (reason && reason?.then?.call) {
                             reason.then(resolve, reject);
                         } else {
                             reject(reason);
@@ -698,7 +698,7 @@ if (!Promise) {
 
                 for (var i = 0, n = promises.length; i < n; i++) {
                     var data = promises[i];
-                    if (data.then && data.then.call)
+                    if (data?.then?.call)
                         data.then(asyncResolve(i), asyncReject);
                     else
                         result[i] = data;
@@ -1492,7 +1492,7 @@ SubtleCrypto.prototype.exportKey = function (format, key) // <editor-fold defaul
         var raw = extractKey(null, null, key);
         if (format === 'raw')
             return raw;
-        else if (format === 'pkcs8' && key.algorithm && key.algorithm.id) {
+        else if (format === 'pkcs8' && key?.algorithm?.id) {
             if (key.algorithm.procreator === 'VN') {
                 // Add masks for ViPNet
                 var algorithm = key.algorithm, mask;
@@ -1514,7 +1514,7 @@ SubtleCrypto.prototype.exportKey = function (format, key) // <editor-fold defaul
                 });
             } else
                 return gostCrypto.asn1.GostPrivateKeyInfo.encode(key);
-        } else if (format === 'spki' && key.algorithm && key.algorithm.id)
+        } else if (format === 'spki' && key?.algorithm?.id)
             return gostCrypto.asn1.GostSubjectPublicKeyInfo.encode(key);
         else
             throw new NotSupportedError('Key format not supported');

src/core/vendor/gost/gostDigest.mjs

@@ -113,7 +113,7 @@ function getSeed(length) {
 function buffer(d) {
     if (d instanceof ArrayBuffer)
         return d;
-    else if (d && d.buffer && d.buffer instanceof ArrayBuffer)
+    else if (d && d?.buffer instanceof ArrayBuffer)
         return d.byteOffset === 0 && d.byteLength === d.buffer.byteLength ?
                 d.buffer : new Uint8Array(new Uint8Array(d, d.byteOffset, d.byteLength)).buffer;
     else

src/core/vendor/gost/gostSign.mjs

@@ -1445,7 +1445,7 @@ function hash(d) {
 function buffer(d) {
     if (d instanceof CryptoOperationData)
         return d;
-    else if (d && d.buffer && d.buffer instanceof CryptoOperationData)
+    else if (d && d?.buffer instanceof CryptoOperationData)
         return d.byteOffset === 0 && d.byteLength === d.buffer.byteLength ?
                 d.buffer : new Uint8Array(new Uint8Array(d, d.byteOffset, d.byteLength)).buffer;
     else

src/web/App.mjs

@@ -342,7 +342,7 @@ class App {
         let favourites;
 
         if (this.isLocalStorageAvailable()) {
-            favourites = localStorage.favourites && localStorage.favourites.length > 2 ?
+            favourites = localStorage?.favourites?.length > 2 ?
                 JSON.parse(localStorage.favourites) :
                 this.dfavourites;
             favourites = this.validFavourites(favourites);

src/web/utils/statusBar.mjs

@@ -159,7 +159,7 @@ class StatusBarPanel {
      * @param {boolean} selectionSet
      */
     updateSelection(state, selectionSet) {
-        const selLen = state.selection && state.selection.main ?
+        const selLen = state?.selection?.main ?
             state.selection.main.to - state.selection.main.from :
             0;
 

src/web/waiters/InputWaiter.mjs

@@ -807,7 +807,7 @@ class InputWaiter {
         // Dropped text is handled by the editor itself
         if (e.dataTransfer.getData("Text")) return;
 
-        if (e.dataTransfer.files && e.dataTransfer.files.length > 0) {
+        if (e?.dataTransfer?.files?.length > 0) {
             this.loadUIFiles(e.dataTransfer.files);
         }
     }

src/web/waiters/OutputWaiter.mjs

@@ -155,7 +155,7 @@ class OutputWaiter {
     getEOLSeq() {
         const currentTabNum = this.manager.tabs.getActiveTab("output");
         if (currentTabNum < 0) {
-            return this.outputEditorConf.state.lineBreak;
+            return this.outputEditorConf.state?.lineBreak || "\n";
         }
         return this.outputs[currentTabNum].eolSequence;
     }

src/web/waiters/RecipeWaiter.mjs

@@ -133,7 +133,7 @@ class RecipeWaiter {
         // Reinitialise the popover on the original element in the ops list because for some reason it
         // gets destroyed and recreated. If the clone isn't in the ops list, we use the original item instead.
         let enableOpsElement;
-        if (evt.clone.parentNode && evt.clone.parentNode.classList.contains("op-list")) {
+        if (evt.clone?.parentNode?.classList?.contains("op-list")) {
             enableOpsElement = evt.clone;
         } else {
             enableOpsElement = evt.item;
@@ -163,13 +163,13 @@ class RecipeWaiter {
 
         e.stopPropagation();
         e.preventDefault();
-        if (e.target.className && e.target.className.indexOf("category-title") > -1) {
+        if (e.target?.className?.indexOf("category-title") > -1) {
             // Hovering over the a
             e.target.classList.add("favourites-hover");
-        } else if (e.target.parentNode.className && e.target.parentNode.className.indexOf("category-title") > -1) {
+        } else if (e.target?.parentNode?.className?.indexOf("category-title") > -1) {
             // Hovering over the Edit button
             e.target.parentNode.classList.add("favourites-hover");
-        } else if (e.target.parentNode.parentNode.className && e.target.parentNode.parentNode.className.indexOf("category-title") > -1) {
+        } else if (e.target?.parentNode?.parentNode?.className?.indexOf("category-title") > -1) {
             // Hovering over the image on the Edit button
             e.target.parentNode.parentNode.classList.add("favourites-hover");
         }
@@ -211,7 +211,7 @@ class RecipeWaiter {
      * @fires Manager#statechange
      */
     ingChange(e) {
-        if (e && e.target && e.target.classList.contains("no-state-change")) return;
+        if (e && e?.target?.classList?.contains("no-state-change")) return;
         window.dispatchEvent(this.manager.statechange);
     }