Unused assignment
Reports a variable whose value is never used after assignment.
Suggests removing the unused variable to shorten the code and to avoid redundant allocations.
The following cases are reported:
A variable is never read after assignment.
The value of a variable is always overwritten with another assignment before the variable is read next time.
The initializer of a variable is redundant (for one of the above-mentioned reasons).
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.
JSUnusedAssignment- 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.
Inspection ID: JSUnusedAssignment
Inspection options
Here you can find the description of settings available for the Unused assignment inspection, and the reference of their default values.
- Report variables that might not have been initialized
Option ID:
myReportNotInitializedDefault 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:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: | CLion 2026.1, GoLand 2026.1, IntelliJ IDEA 2026.1, JetBrains Rider 2025.3, PhpStorm 2026.1, PyCharm 2026.1, Qodana for .NET 2025.3, Qodana for Go 2026.1, Qodana for JS 2026.1, Qodana for JVM 2026.1, Qodana for PHP 2026.1, Qodana for Ruby 2026.1, RubyMine 2026.1, WebStorm 2026.1 |