From f159b39c89c4083c4ca9efd57e540cfc14147771 Mon Sep 17 00:00:00 2001
From: Stefan Vukovic <stefanvukovic44@gmail.com>
Date: Tue, 9 Jan 2024 09:38:14 +0100
Subject: [PATCH] use Map in areArraysEqualIgnoreOrder

---
 ext/js/dictionary/dictionary-data-util.js |  8 +++---
 ext/js/language/translator.js             | 35 +++++++++++++++++++----
 2 files changed, 33 insertions(+), 10 deletions(-)

diff --git a/ext/js/dictionary/dictionary-data-util.js b/ext/js/dictionary/dictionary-data-util.js
index c27e377e86..50ae4b1194 100644
--- a/ext/js/dictionary/dictionary-data-util.js
+++ b/ext/js/dictionary/dictionary-data-util.js
@@ -331,8 +331,8 @@ export class DictionaryDataUtil {
                 const pitchAccent2 = /** @type {import('dictionary').PitchAccent} */ (pronunciation2);
                 return (
                     pronunciation1.position === pitchAccent2.position &&
-                    this.areArraysEqual(pronunciation1.nasalPositions, pitchAccent2.nasalPositions) &&
-                    this.areArraysEqual(pronunciation1.devoicePositions, pitchAccent2.devoicePositions)
+                    this._areArraysEqual(pronunciation1.nasalPositions, pitchAccent2.nasalPositions) &&
+                    this._areArraysEqual(pronunciation1.devoicePositions, pitchAccent2.devoicePositions)
                 );
             }
             case 'phonetic-transcription':
@@ -351,7 +351,7 @@ export class DictionaryDataUtil {
      * @param {T[]} array2
      * @returns {boolean}
      */
-    static areArraysEqual(array1, array2) {
+    static _areArraysEqual(array1, array2) {
         const ii = array1.length;
         if (ii !== array2.length) { return false; }
         for (let i = 0; i < ii; ++i) {
@@ -372,7 +372,7 @@ export class DictionaryDataUtil {
         for (let i = 0; i < ii; ++i) {
             const tag1 = tagList1[i];
             const tag2 = tagList2[i];
-            if (tag1.name !== tag2.name || !this.areArraysEqual(tag1.dictionaries, tag2.dictionaries)) {
+            if (tag1.name !== tag2.name || !this._areArraysEqual(tag1.dictionaries, tag2.dictionaries)) {
                 return false;
             }
         }
diff --git a/ext/js/language/translator.js b/ext/js/language/translator.js
index afc40d19b2..23a7bfc2a4 100644
--- a/ext/js/language/translator.js
+++ b/ext/js/language/translator.js
@@ -16,7 +16,6 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import {DictionaryDataUtil} from '../dictionary/dictionary-data-util.js';
 import {RegexUtil} from '../general/regex-util.js';
 import {TextSourceMap} from '../general/text-source-map.js';
 import {Deinflector} from './deinflector.js';
@@ -249,7 +248,6 @@ export class Translator {
     }
 
     /**
-     *
      * @param {import('dictionary').TermDictionaryEntry} existingEntry
      * @param {import('dictionary').InflectionHypothesis[]} inflectionHypotheses
      */
@@ -257,10 +255,7 @@ export class Translator {
         const existingHypotheses = existingEntry.inflectionHypotheses;
 
         for (const {source, inflections} of inflectionHypotheses) {
-            const duplicate = existingHypotheses.find((hypothesis) => DictionaryDataUtil.areArraysEqual(
-                [...hypothesis.inflections].sort(),
-                [...inflections].sort()
-            ));
+            const duplicate = existingHypotheses.find((hypothesis) => this._areArraysEqualIgnoreOrder(hypothesis.inflections, inflections));
             if (!duplicate) {
                 existingEntry.inflectionHypotheses.push({source, inflections});
             } else if (duplicate.source !== source) {
@@ -269,6 +264,34 @@ export class Translator {
         }
     }
 
+    /**
+     * @param {string[]} array1
+     * @param {string[]} array2
+     * @returns {boolean}
+     */
+    _areArraysEqualIgnoreOrder(array1, array2) {
+        if (array1.length !== array2.length) {
+            return false;
+        }
+
+        const frequencyCounter = new Map();
+
+        for (const element of array1) {
+            frequencyCounter.set(element, (frequencyCounter.get(element) || 0) + 1);
+        }
+
+        for (const element of array2) {
+            const frequency = frequencyCounter.get(element);
+            if (!frequency) {
+                return false;
+            }
+            frequencyCounter.set(element, frequency - 1);
+        }
+
+        return true;
+    }
+
+
     /**
      * @param {string} text
      * @param {Map<string, import('translation').FindTermDictionary>} enabledDictionaryMap