Unused 'catch' parameter

Last modified: Last modified: 18 September 2025

Reports a catch parameter that is not used in the corresponding block. The catch parameters named ignore or ignored are ignored.

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.

UnusedCatchParameterJS
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 | Try statement issues

Use the checkbox below to disable this inspection for catch blocks with comments.

Inspection ID: UnusedCatchParameterJS

Inspection options

Here you can find the description of settings available for the Unused 'catch' parameter inspection, and the reference of their default values.

Ignore catch blocks containing comments

Option ID:

m_ignoreCatchBlocksWithComments

Default value:

Not selected

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

note

Actual comment syntax will depend on the code language you are working with

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

CLion 2025.2, GoLand 2025.2, IntelliJ IDEA 2025.2, JetBrains Rider 2025.2, PhpStorm 2025.2, PyCharm 2025.2, Qodana for .NET 2025.2, Qodana for Go 2025.2, Qodana for JS 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2, WebStorm 2025.2