feat(assets): bundle runtime assets and vendor dependencies

vendor/yomitan/js/language/ime-utilities.js

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2025  Yomitan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Mobile browsers report that keyboards are composing even when they are clearly sending normal input.
+ * This conflicts with detection of desktop IME composing which is reported correctly.
+ * If the composing input is a single alphabetic letter, it is almost certainly a mobile keyboard pretending to be composing.
+ * This is not foolproof. For example a Japanese IME could try to convert `えい` to `A` which would show as "fake composing". But this is unlikely.
+ * @param {InputEvent} event
+ * @returns {boolean}
+ */
+export function isFakeComposing(event) {
+    return !!event.data?.match(/^[A-Za-z]$/);
+}
+
+/**
+ * @param {InputEvent} event
+ * @param {string} platform
+ * @param {string} browser
+ * @returns {boolean}
+ */
+export function isComposing(event, platform, browser) {
+    // Desktop Composing
+    if (event.isComposing && platform !== 'android') { return true; }
+
+    // Android Composing
+    // eslint-disable-next-line sonarjs/prefer-single-boolean-return
+    if (event.isComposing && !isFakeComposing(event) && platform === 'android' && browser !== 'firefox-mobile') { return true; }
+
+    return false;
+}