feat: support grammY lazy sessions (#10)

* Added support for grammY lazy sessions

Signed-off-by: Slava Fomin II <slava@fomin.io>

* style: adapt to linter style

Co-authored-by: EdJoPaTo <rfc-conform-git-commit-email@funny-long-domain-label-everyone-hates-as-it-is-too-long.edjopato.de>

package.json

@@ -20,7 +20,8 @@
 		"url": "https://edjopato.de"
 	},
 	"contributors": [
-		"Vitaly Domnikov <oss@vitaly.codes>"
+		"Vitaly Domnikov <oss@vitaly.codes>",
+		"Slava Fomin II <slava@fomin.io>"
 	],
 	"scripts": {
 		"build": "del-cli dist && tsc",

source/i18n.ts

@@ -122,7 +122,7 @@ export class I18n {
 		// eslint-disable-next-line @typescript-eslint/prefer-readonly-parameter-types
 		return async (ctx, next) => {
 			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-			const session: Session | undefined = this.config.useSession && (ctx as any)[this.config.sessionName];
+			const session: Session | undefined = await (this.config.useSession && (ctx as any)[this.config.sessionName]);
 			const languageCode = session?.__language_code ?? ctx.from?.language_code ?? this.config.defaultLanguage;
 
 			// @ts-expect-error writing to readonly property