Use let instead of const in for loops.

ext/bg/js/deinflector.js

@@ -26,12 +26,12 @@ class Deinflection {
     }
 
     validate(validator) {
-        for (const tags of validator(this.term)) {
+        for (let tags of validator(this.term)) {
             if (this.tags.length === 0) {
                 return true;
             }
 
-            for (const tag of this.tags) {
+            for (let tag of this.tags) {
                 if (tags.indexOf(tag) !== -1) {
                     return true;
                 }
@@ -47,11 +47,11 @@ class Deinflection {
             this.children.push(child);
         }
 
-        for (const rule in rules) {
+        for (let rule in rules) {
             const variants = rules[rule];
-            for (const v of variants) {
+            for (let v of variants) {
                 let allowed = this.tags.length === 0;
-                for (const tag of this.tags) {
+                for (let tag of this.tags) {
                     //
                     // TODO: Handle addons through tags.json or rules.json
                     //
@@ -83,8 +83,8 @@ class Deinflection {
         }
 
         const paths = [];
-        for (const child of this.children) {
+        for (let child of this.children) {
-            for (const path of child.gather()) {
+            for (let path of child.gather()) {
                 if (this.rule.length > 0) {
                     path.rules.push(this.rule);
                 }

ext/bg/js/dictionary.js

@@ -34,7 +34,7 @@ class Dictionary {
     findTerm(term) {
         let results = [];
 
-        for (const name in this.termDicts) {
+        for (let name in this.termDicts) {
             const dict    = this.termDicts[name];
             const indices = dict.indices[term] || [];
 
@@ -48,7 +48,7 @@ class Dictionary {
                     // TODO: Handle addons through data.
                     //
 
-                    for (const tag of tags) {
+                    for (let tag of tags) {
                         if (tag.startsWith('v5') && tag !== 'v5') {
                             addons.push('v5');
                         } else if (tag.startsWith('vs-')) {
@@ -74,7 +74,7 @@ class Dictionary {
     findKanji(kanji) {
         const results = [];
 
-        for (const name in this.kanjiDicts) {
+        for (let name in this.kanjiDicts) {
             const def = this.kanjiDicts[name][kanji];
             if (def) {
                 const [k, o, g] = def;

ext/bg/js/options.js

@@ -33,7 +33,7 @@ function sanitizeOptions(options) {
         ankiKanjiFields:   {}
     };
 
-    for (const key in defaults) {
+    for (let key in defaults) {
         if (!options.hasOwnProperty(key)) {
             options[key] = defaults[key];
         }

ext/bg/js/translator.js

@@ -45,7 +45,7 @@ class Translator {
         }
 
         const pendingLoads = [];
-        for (const key of files) {
+        for (let key of files) {
             pendingLoads.push(key);
             Translator.loadData(this.paths[key], (response) => {
                 switch (key) {
@@ -80,7 +80,7 @@ class Translator {
 
             const dfs = this.deinflector.deinflect(term, t => {
                 const tags = [];
-                for (const d of this.dictionary.findTerm(t)) {
+                for (let d of this.dictionary.findTerm(t)) {
                     tags.push(d.tags);
                 }
 
@@ -91,13 +91,13 @@ class Translator {
                 continue;
             }
 
-            for (const df of dfs) {
+            for (let df of dfs) {
                 this.processTerm(groups, df.source, df.tags, df.rules, df.root);
             }
         }
 
         let definitions = [];
-        for (const key in groups) {
+        for (let key in groups) {
             definitions.push(groups[key]);
         }
 
@@ -130,7 +130,7 @@ class Translator {
         });
 
         let length = 0;
-        for (const result of definitions) {
+        for (let result of definitions) {
             length = Math.max(length, result.source.length);
         }
 
@@ -141,7 +141,7 @@ class Translator {
         let definitions = [];
         const processed = {};
 
-        for (const c of text) {
+        for (let c of text) {
             if (!processed[c]) {
                 definitions = definitions.concat(this.dictionary.findKanji(c));
                 processed[c] = true;
@@ -152,13 +152,13 @@ class Translator {
     }
 
     processTerm(groups, source, tags, rules=[], root='') {
-        for (const entry of this.dictionary.findTerm(root)) {
+        for (let entry of this.dictionary.findTerm(root)) {
             if (entry.id in groups) {
                 continue;
             }
 
             let matched = tags.length == 0;
-            for (const tag of tags) {
+            for (let tag of tags) {
                 if (entry.tags.indexOf(tag) !== -1) {
                     matched = true;
                     break;
@@ -167,7 +167,7 @@ class Translator {
 
             let popular  = false;
             let tagItems = [];
-            for (const tag of entry.tags) {
+            for (let tag of entry.tags) {
                 const tagItem = this.tags[tag];
                 if (tagItem && entry.addons.indexOf(tag) === -1) {
                     tagItems.push({

ext/bg/js/yomichan.js

@@ -22,7 +22,7 @@ class Yomichan {
         Handlebars.partials = Handlebars.templates;
         Handlebars.registerHelper('kanjiLinks', function(options) {
             let result = '';
-            for (const c of options.fn(this)) {
+            for (let c of options.fn(this)) {
                 if (Translator.isKanji(c)) {
                     result += Handlebars.templates['kanji-link.html']({kanji: c}).trim();
                 } else {
@@ -111,7 +111,7 @@ class Yomichan {
 
     notifyTabs(name, value) {
         chrome.tabs.query({}, (tabs) => {
-            for (const tab of tabs) {
+            for (let tab of tabs) {
                 chrome.tabs.sendMessage(tab.id, {name, value}, () => null);
             }
         });
@@ -155,7 +155,7 @@ class Yomichan {
     formatField(field, definition, mode) {
         const supported = ['character', 'expression', 'glossary', 'kunyomi', 'onyomi', 'reading'];
 
-        for (const key in definition) {
+        for (let key in definition) {
             if (supported.indexOf(key) === -1) {
                 continue;
             }
@@ -175,7 +175,7 @@ class Yomichan {
 
             if (mode !== 'kanji' && key === 'glossary') {
                 value = '<ol>';
-                for (const gloss of definition.glossary) {
+                for (let gloss of definition.glossary) {
                     value += `<li>${gloss}</li>`;
                 }
                 value += '</ol>';
@@ -201,7 +201,7 @@ class Yomichan {
             note.modelName = this.options.ankiVocabModel;
         }
 
-        for (const name in fields) {
+        for (let name in fields) {
             note.fields[name] = this.formatField(fields[name], definition, mode);
         }
 
@@ -215,8 +215,8 @@ class Yomichan {
 
     api_canAddDefinitions({definitions, modes, callback}) {
         let notes = [];
-        for (const definition of definitions) {
+        for (let definition of definitions) {
-            for (const mode of modes) {
+            for (let mode of modes) {
                 notes.push(this.formatNote(definition, mode));
             }
         }

ext/fg/js/frame.js

@@ -18,7 +18,7 @@
 
 
 function registerKanjiLinks() {
-    for (const link of [].slice.call(document.getElementsByClassName('kanji-link'))) {
+    for (let link of [].slice.call(document.getElementsByClassName('kanji-link'))) {
         link.addEventListener('click', (e) => {
             e.preventDefault();
             window.parent.postMessage({action: 'displayKanji', params: e.target.innerHTML}, '*');
@@ -27,7 +27,7 @@ function registerKanjiLinks() {
 }
 
 function registerAddNoteLinks() {
-    for (const link of [].slice.call(document.getElementsByClassName('action-add-note'))) {
+    for (let link of [].slice.call(document.getElementsByClassName('action-add-note'))) {
         link.addEventListener('click', (e) => {
             e.preventDefault();
             const ds = e.currentTarget.dataset;
@@ -37,7 +37,7 @@ function registerAddNoteLinks() {
 }
 
 function registerPronounceLinks() {
-    for (const link of [].slice.call(document.getElementsByClassName('action-pronounce'))) {
+    for (let link of [].slice.call(document.getElementsByClassName('action-pronounce'))) {
         link.addEventListener('click', (e) => {
             e.preventDefault();
             const ds = e.currentTarget.dataset;
@@ -60,7 +60,7 @@ function onMessage(e) {
 }
 
 function api_setActionState({index, state, sequence}) {
-    for (const mode in state) {
+    for (let mode in state) {
         const matches = document.querySelectorAll(`.action-bar[data-sequence="${sequence}"] .action-add-note[data-index="${index}"][data-mode="${mode}"]`);
         if (matches.length === 0) {
             return;