Fix compatibility with SPFX 1.15 and minor eslint issues

Author: stevebeauge

.eslintrc.js

@@ -0,0 +1,22 @@
+require('@rushstack/eslint-config/patch/modern-module-resolution');
+  module.exports = {
+    extends: ['@microsoft/eslint-config-spfx/lib/profiles/react'],
+    parserOptions: { tsconfigRootDir: __dirname },
+    overrides: [
+      {
+        files: ['*.ts', '*.tsx'], // Your TypeScript files extension
+
+        parserOptions: {
+          project: ['./tsconfig.json'], // Specify it only for TypeScript files
+        },
+
+        rules: {
+          'react-hooks/exhaustive-deps': 'error',
+          '@typescript-eslint/no-unused-vars': 'warn',
+          '@microsoft/spfx/no-async-await': 'off', // IE is dead, long live IE
+          '@typescript-eslint/typedef': 'off', // useless rule thanks for TS type inference
+          '@typescript-eslint/no-floating-promises': 'warn',
+        },
+      },
+    ],
+  };