1 files changed, 29 insertions, 0 deletions
diff --git a/packages/frontend/src/scripts/i18n.ts b/packages/frontend/src/scripts/i18n.ts
new file mode 100644
index 0000000000..54184386da
--- /dev/null
+++ b/packages/frontend/src/scripts/i18n.ts
@@ -0,0 +1,29 @@
+export class I18n<T extends Record<string, any>> {
+	public ts: T;
+
+	constructor(locale: T) {
+		this.ts = locale;
+
+		//#region BIND
+		this.t = this.t.bind(this);
+		//#endregion
+	}
+
+	// string にしているのは、ドット区切りでのパス指定を許可するため
+	// なるべくこのメソッド使うよりもlocale直接参照の方がvueのキャッシュ効いてパフォーマンスが良いかも
+	public t(key: string, args?: Record<string, string | number>): string {
+		try {
+			let str = key.split('.').reduce((o, i) => o[i], this.ts) as unknown as string;
+
+			if (args) {
+				for (const [k, v] of Object.entries(args)) {
+					str = str.replace(`{${k}}`, v.toString());
+				}
+			}
+			return str;
+		} catch (err) {
+			console.warn(`missing localization '${key}'`);
+			return key;
+		}
+	}
+}