Fix runtime loading

src/common/runtime.ts

@@ -30,7 +30,7 @@ let scrollRuntime: IRuntime | null = null;
 
 export function log(s: unknown, level: LogLevel = LogLevel.Notice): void {
 	getRuntime().then(({ file }) => {
-		const raw = typeof s === 'string' ? s : JSON.stringify(s, null, 2);
+		const raw = JSON.stringify(s, null, 2);
 		const output = `${level}: ${raw}\n`;
 
 		const outputFile = (level === LogLevel.Error)
@@ -85,15 +85,18 @@ export async function getRuntime(): Promise<IRuntime> {
 		const pkg = await import(path);
 		if ('default' in pkg) {
 			scrollRuntime = pkg.default;
+		}
+
 		if (scrollRuntime !== null) {
 			return Promise.resolve(scrollRuntime);
 		}
-		}
-	}
 
 		return Promise.reject('Missing default import');
 	}
 
+	return Promise.resolve(scrollRuntime);
+}
+
 /**
  * Get the common test interface object
  */