Void function return value used

Reports a return value of a function that doesn't return anything. Calling of such functions always produces an undefined value and such assignment may indicate an error.

Example:

let a = console.log('foo');

The following usages are ignored:

Inside a return statement
In some binary operations
For overridden non-void functions

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

JSVoidFunctionReturnValueUsed

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | JavaScript and TypeScript | Probable bugs

Availability

By default bundled with: CLion 2024.1, GoLand 2024.1, IntelliJ IDEA 2024.1, JetBrains Rider 2023.3, PhpStorm 2024.1, PyCharm 2024.1, Qodana for .NET 2023.3, Qodana for Go 2024.1, Qodana for JS 2024.1, Qodana for JVM 2024.1, Qodana for PHP 2024.1, Qodana for Ruby 2024.1, RubyMine 2024.1, WebStorm 2024.1
Can be installed with plugin: JavaScript and TypeScript, 241.18072

Last modified: 18 June 2024