S2 EsLint implementation

agiledancers-fe/src/app/shared/school-transfer.spec.ts

@@ -16,7 +16,10 @@ describe('School JSON import', () => {
   afterEach(() => http.verify());
   async function select() {
     const selected = component.select({
-      target: { files: [{ text: async () => '{"formatVersion":1}' }], value: 'file.json' },
+      target: {
+        files: [{ text: () => Promise.resolve('{"formatVersion":1}') }],
+        value: 'file.json',
+      },
     } as unknown as Event);
     await Promise.resolve();
     return { selected, request: http.expectOne('/api/dance-schools/import/preview') };