Re-enable the @typescript-eslint/no-floating-promises rule

Author: sindresorhus

index.js

@@ -279,10 +279,12 @@ module.exports = {
 				allowWithDecorator: true
 			}
 		],
-
-		// Disabled because of https://github.com/typescript-eslint/typescript-eslint/issues/647
-		// '@typescript-eslint/no-floating-promises': 'error',
-
+		'@typescript-eslint/no-floating-promises': [
+			'error',
+			{
+				ignoreIIFE: true
+			}
+		],
 		'@typescript-eslint/no-for-in-array': 'error',
 		'@typescript-eslint/no-inferrable-types': 'error',
 		'@typescript-eslint/no-misused-new': 'error',

package.json

@@ -44,15 +44,15 @@
 		"simple"
 	],
 	"devDependencies": {
-		"@typescript-eslint/eslint-plugin": "^2.28.0",
-		"@typescript-eslint/parser": "^2.28.0",
+		"@typescript-eslint/eslint-plugin": "^2.29.0",
+		"@typescript-eslint/parser": "^2.29.0",
 		"ava": "^2.4.0",
 		"eslint": "^6.8.0",
 		"temp-write": "^4.0.0",
 		"typescript": "^3.8.3"
 	},
 	"peerDependencies": {
-		"@typescript-eslint/eslint-plugin": ">=2.28.0",
+		"@typescript-eslint/eslint-plugin": ">=2.29.0",
 		"eslint": ">=6.6.0",
 		"typescript": ">=3.5.3"
 	}