Adds typescript rules

.eslintrc.js

@@ -22,5 +22,7 @@ module.exports = {
   ],
   rules: {
     '@typescript-eslint/prefer-regexp-exec': 1,
+    '@typescript-eslint/ban-ts-ignore': 0,
+    '@typescript-eslint/unbound-method': 1,
   },
 };

package.json

@@ -89,10 +89,12 @@
       "git add"
     ],
     "*.js": [
+      "prettier --write",
       "eslint --fix",
       "git add"
     ],
     "*.{ts,tsx}": [
+      "prettier --write",
       "eslint --fix",
       "git add"
     ]

src/__tests__/index.test.tsx

@@ -86,14 +86,16 @@ describe('React Infinite Scroll Component', () => {
   describe('When missing the dataLength prop', () => {
     it('throws an error', () => {
       console.error = jest.fn();
-      const props = { loader: 'Loading...', hasMore: false, next: (() => {}) }
+      const props = { loader: 'Loading...', hasMore: false, next: () => {} };
 
       // @ts-ignore
-      expect(() => render(<InfiniteScroll {...props} />)).toThrow(Error)
+      expect(() => render(<InfiniteScroll {...props} />)).toThrow(Error);
       // @ts-ignore
-      expect(console.error.mock.calls[0][0]).toContain('"dataLength" is missing')
+      expect(console.error.mock.calls[0][0]).toContain(
+        '"dataLength" is missing'
+      );
     });
-  })
+  });
 
   describe('When user scrolls to the bottom', () => {
     it('does not show loader if hasMore is false', () => {

src/index.tsx

@@ -69,8 +69,8 @@ export default class InfiniteScroll extends Component<Props, State> {
     if (typeof this.props.dataLength === 'undefined') {
       throw new Error(
         `mandatory prop "dataLength" is missing. The prop is needed` +
-        ` when loading more content. Check README.md for usage`
-      )
+          ` when loading more content. Check README.md for usage`
+      );
     }
 
     this._scrollableNode = this.getScrollableTarget();