Variable is declared and being used in different 'case' clauses
Reports a variable that is declared in one case clause of a switch statement but is used in another case clause of the same statement. For block-scoped variables, this results in throwing a ReferenceError. For var variables, it indicates a potential error.
Disable the inspection for var variables if this pattern is used intentionally.
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.
JSSwitchVariableDeclarationIssue- 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: JSSwitchVariableDeclarationIssue
Inspection options
Here you can find the description of settings available for the Variable is declared and being used in different 'case' clauses inspection, and the reference of their default values.
- Ignore for var-variables
Option ID:
ignoreNonBlockScopeDefault 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 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 |