Enabled @typescript-eslint/unbound-method eslint rule again

.eslintrc

@@ -16,7 +16,7 @@
   },
   "rules": {
     "@typescript-eslint/no-unsafe-assignment": "off",
-    "@typescript-eslint/unbound-method": "off",
+
     "@typescript-eslint/no-unsafe-member-access": "off",
     "@typescript-eslint/no-unsafe-call": "off",
     "@typescript-eslint/no-unsafe-return": "off",

src/visits/types/helpers.ts

@@ -10,6 +10,6 @@ export interface GroupedNewVisits {
 
 export const groupNewVisitsByType = pipe(
   groupBy((newVisit: CreateVisit) => isOrphanVisit(newVisit.visit) ? 'orphanVisits' : 'regularVisits'),
-  // @ts-ignore-error Type declaration on groupBy is not correct. It can return undefined props
+  // @ts-expect-error Type declaration on groupBy is not correct. It can return undefined props
   (result): GroupedNewVisits => ({ orphanVisits: [], regularVisits: [], ...result }),
 );

test/servers/services/ServersExporter.test.ts

@@ -9,16 +9,15 @@ describe('ServersExporter', () => {
     click: jest.fn(),
     style: {},
   });
+  const appendChild = jest.fn();
+  const removeChild = jest.fn();
   const createWindowMock = (isIe10 = true) => Mock.of<Window>({
     navigator: {
       msSaveBlob: isIe10 ? jest.fn() : undefined,
     },
     document: {
       createElement: jest.fn(() => createLinkMock()),
-      body: {
+      body: { appendChild, removeChild },
-        appendChild: jest.fn(),
-        removeChild: jest.fn(),
-      },
     },
   });
   const storageMock = Mock.of<LocalStorage>({
@@ -33,15 +32,14 @@ describe('ServersExporter', () => {
       },
     })),
   });
-  const createCsvjsonMock = (throwError = false) => Mock.of<CsvJson>({
+  const erroneousToCsv = jest.fn(() => {
-    toCSV: jest.fn(() => {
+    throw new Error('');
-      if (throwError) {
-        throw new Error('');
-      }
-
-      return '';
-    }),
   });
+  const createCsvjsonMock = (throwError = false) => Mock.of<CsvJson>({
+    toCSV: throwError ? erroneousToCsv : jest.fn(() => ''),
+  });
+
+  beforeEach(jest.clearAllMocks);
 
   describe('exportServers', () => {
     let originalConsole: Console;
@@ -61,12 +59,11 @@ describe('ServersExporter', () => {
     it('logs an error if something fails', () => {
       const csvjsonMock = createCsvjsonMock(true);
       const exporter = new ServersExporter(storageMock, createWindowMock(), csvjsonMock);
-      const { toCSV } = csvjsonMock;
 
       exporter.exportServers();
 
       expect(error).toHaveBeenCalledTimes(1);
-      expect(toCSV).toHaveBeenCalledTimes(1);
+      expect(erroneousToCsv).toHaveBeenCalledTimes(1);
     });
 
     it('makes use of msSaveBlob API when available', () => {
@@ -84,8 +81,7 @@ describe('ServersExporter', () => {
     it('makes use of download link API when available', () => {
       const windowMock = createWindowMock(false);
       const exporter = new ServersExporter(storageMock, windowMock, createCsvjsonMock());
-      const { document: { createElement, body } } = windowMock;
+      const { document: { createElement } } = windowMock;
-      const { appendChild, removeChild } = body;
 
       exporter.exportServers();
 

test/visits/helpers/DefaultChart.test.tsx

@@ -25,7 +25,7 @@ describe('<DefaultChart />', () => {
 
     const { labels, datasets } = doughnut.prop('data') as any;
     const [{ title, data, backgroundColor, borderColor }] = datasets;
-    const { legend, legendCallback, scales } = doughnut.prop('options') ?? {};
+    const { legend, scales, ...options } = doughnut.prop('options') ?? {};
 
     expect(title).toEqual('The chart');
     expect(labels).toEqual(keys(stats));
@@ -46,7 +46,7 @@ describe('<DefaultChart />', () => {
     ]);
     expect(borderColor).toEqual('white');
     expect(legend).toEqual({ display: false });
-    expect(typeof legendCallback).toEqual('function');
+    expect(typeof options.legendCallback).toEqual('function');
     expect(scales).toBeUndefined();
     expect(cols).toHaveLength(2);
   });
@@ -61,12 +61,12 @@ describe('<DefaultChart />', () => {
     expect(horizontal).toHaveLength(1);
 
     const { datasets: [{ backgroundColor, borderColor }] } = horizontal.prop('data') as any;
-    const { legend, legendCallback, scales } = horizontal.prop('options') ?? {};
+    const { legend, scales, ...options } = horizontal.prop('options') ?? {};
 
     expect(backgroundColor).toEqual(MAIN_COLOR_ALPHA);
     expect(borderColor).toEqual(MAIN_COLOR);
     expect(legend).toEqual({ display: false });
-    expect(legendCallback).toEqual(false);
+    expect(typeof options.legendCallback).toEqual('boolean');
     expect(scales).toEqual({
       xAxes: [
         {