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Signature mismatch

Reports a JavaScript call expression where the arguments do not match the signature of the referenced function, including the types of arguments and their number. Also, reports if the overloading function doesn't match the overloaded one in terms of parameters and return types.

TypeScript code is 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.

JSCheckFunctionSignatures
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 | General

Inspection ID: JSCheckFunctionSignatures

Inspection options

Here you can find the description of settings available for the Signature mismatch inspection, and the reference of their default values.

Consider untyped parameters as required

Option ID:

myCheckGuessedTypes

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:

//noinspection JSCheckFunctionSignatures

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

Last modified: 18 September 2025