make deinflections language-specific (#720)

* abstract deinflections

* undo redundant changes

* remove cast

* MultiLanguageTransformer

* comments

* comments

3 files changed, 15 insertions, 8 deletions

diff --git a/ext/js/background/backend.js b/ext/js/background/backend.js
index 6340d021..dbcbdd62 100644
--- a/ext/js/background/backend.js
+++ b/ext/js/background/backend.js
@@ -274,9 +274,16 @@ export class Backend {
                 log.error(e);
             }
 
-            /** @type {import('language-transformer').LanguageTransformDescriptor} */
-            const descriptor = await fetchJson('/data/language/japanese-transforms.json');
-            void this._translator.prepare(descriptor);
+            /** @type {import('language-transformer').LanguageTransformDescriptor[]} */
+            const descriptors = [];
+            const languageSummaries = getLanguageSummaries();
+            for (const {languageTransformsFile} of languageSummaries) {
+                if (!languageTransformsFile) { continue; }
+                /** @type {import('language-transformer').LanguageTransformDescriptor} */
+                const descriptor = await fetchJson(languageTransformsFile);
+                descriptors.push(descriptor);
+            }
+            void this._translator.prepare(descriptors);
 
             await this._optionsUtil.prepare();
             this._defaultAnkiFieldTemplates = (await fetchText('/data/templates/default-anki-field-templates.handlebars')).trim();
diff --git a/ext/js/background/offscreen-proxy.js b/ext/js/background/offscreen-proxy.js
index c888fe29..102a9eed 100644
--- a/ext/js/background/offscreen-proxy.js
+++ b/ext/js/background/offscreen-proxy.js
@@ -184,10 +184,10 @@ export class TranslatorProxy {
     }
 
     /**
-     * @param {import('language-transformer').LanguageTransformDescriptor} descriptor
+     * @param {import('language-transformer').LanguageTransformDescriptor[]} descriptors
      */
-    async prepare(descriptor) {
-        await this._offscreen.sendMessagePromise({action: 'translatorPrepareOffscreen', params: {descriptor}});
+    async prepare(descriptors) {
+        await this._offscreen.sendMessagePromise({action: 'translatorPrepareOffscreen', params: {descriptors}});
     }
 
     /**
diff --git a/ext/js/background/offscreen.js b/ext/js/background/offscreen.js
index 3b8b6a3e..e38d4ba3 100644
--- a/ext/js/background/offscreen.js
+++ b/ext/js/background/offscreen.js
@@ -111,8 +111,8 @@ export class Offscreen {
     }
 
     /** @type {import('offscreen').ApiHandler<'translatorPrepareOffscreen'>} */
-    _prepareTranslatorHandler({descriptor}) {
-        this._translator.prepare(descriptor);
+    _prepareTranslatorHandler({descriptors}) {
+        this._translator.prepare(descriptors);
     }
 
     /** @type {import('offscreen').ApiHandler<'findKanjiOffscreen'>} */