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Explicit types

Reports a type annotation that doesn't match the current code style for explicit types.

Locating this inspection


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

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 | TypeScript

Type declarations are not necessary when the type that is inferred from the context exactly matches the type annotation, for example:

var pi: number = 3.14

In some cases it is preferable to always have explicit types - this prevents accidental type changes and makes code more explicit.

Inspection options

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

Code style settings for explicit types



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