Phpstorm Linter

Lots of PHP developers create their applications using Laravel, a free, open source PHP web application framework. It is built on top of several Symfony components, and provides a development framework that makes common tasks such as authentication, routing, sessions and caching much easier to implement. Phplint is a Phpstorm plugin for phpLint! Protocol Buffer Linter. Compatible with all IntelliJ-based IDEs. Protolint plugin for all products based on IntelliJ Platform (IntelliJ IDEA, GoLand, RubyMine, WebStorm, PhpStorm, PyCharm, AppCode, etc.) The plugin does not require configuration by default, for the majority of projects it should work.

You can use the TSLint code verification tool from inside PhpStorm and check your TypeScript code for most common mistakes without running the application. When the tool is activated, it lints all the opened TypeScript files and marks the detected problems.

To view the description of a problem, hover over the highlighted code. By default, PhpStorm marks detected problems based on the severity levels from the TSLint configuration file. See Configuring TSLint highlighting to learn how to override these settings.

You can also check your TypeScript code with ESLint, see Lint TypeScript with ESLint.

Before you start

Download and install Node.js.
Make sure a local Node.js interpreter is configured in your project: open the Settings/Preferences dialog Ctrl+Alt+S and go to Languages and Frameworks | Node.js and NPM. The Node Interpreter field shows the default project Node.js interpreter.
Learn more from Configuring a local Node.js interpreter.
Make sure the TSLint and JavaScript and TypeScript bundled plugins are enabled on the Settings/Preferences | Plugins page, see Managing plugins for details.

Installing TSLint

In the embedded Terminal (Alt+F12), type:
npm install tslint typescript --save-dev
Learn more from the TSLint official website.

Activating and configuring TSLint in PhpStorm

By default, PhpStorm uses the TSLint package from the project node_modules folder and the tslint.json configuration file from the folder where the current file is stored. If no tslint.json is found in the current file folder, PhpStorm will look for one in its parent folders up to the project root.

If you have several package.json files with TSLint listed as a dependency, PhpStorm starts a separate process for each package.json and processes everything below it. This lets you apply a specific TSLint version or a specific set of plugins to each path in a monorepo or a project with multiple TSLint configurations.

This behavior is default in all new PhpStorm projects. To enable it in a previously created project, go to Languages and Frameworks | TypeScript | TSLint in the Settings/Preferences dialog Ctrl+Alt+S and select the Automatic TSLint configuration option.

You can also configure TSLint manually to use a custom TSLint package and tslint.json and specify some additional rules.

In the Settings/Preferences dialog Ctrl+Alt+S, go to Languages and Frameworks | TypeScript | TSLint.
Select the Manual Configuration option.
Specify the path to the TSLint package.
In the Configuration File area, appoint the configuration to use.
By default, PhpStorm first looks for a tslint.json, tslint.yaml, or tslint.yml configuration file. PhpStorm starts the search from the folder where the file to be checked is stored, then searches in the parent folder, and so on until reaches the project root. If no tslint.json, tslint.yaml, or tslint.yml configuration file is found, TSLint uses its default embedded configuration file. Accordingly, you have to define the configuration to apply either in a tslint.json, tslint.yaml, or tslint.yml configuration file, or in a custom configuration file, or rely on the default embedded configuration.
- To have PhpStorm look for a tslint.json, tslint.yaml, or tslint.yml file, choose the Automatic search option.
- To use a custom file, choose the Configuration File option and specify the location of the file in the Path field. Choose the path from the list, or type it manually, or click and select the relevant file from the dialog that opens.
Learn more about configuring TSLint from the TSLint official website.
If necessary, in the Additional Rules Directory field, specify the location of the files with additional code verification rules. These rules will be applied after the rules from tslint.json, tslint.yaml, tslint.yml, or from the above specified custom configuration file and accordingly will override them.

Configuring highlighting for TSLint

By default, PhpStorm marks the detected errors and warnings based on the severity levels from the TSLint configuration file. For example, errors are highlighted with a red squiggly line, while warnings are marked with a yellow background. See Code inspections and Change inspection severity for details.

Change the severity level of a rule in the TSLint configuration

In TSLint configuration file, locate the rule you want to edit and set its ID to warning or to error. Learn more from the TSLint official website.

Phpstorm Intellij

You can override the severities from the TSLint configuration file so that PhpStorm ignores them and shows everything reported by the linter as errors, warnings, or in a custom color.

Ignore the severity levels from the configuration

In the Settings/Preferences dialog Ctrl+Alt+S, go to Editor | Inspections. The Inspections page opens.
In the central pane, go to TypeScript | TSLint.
In the right-hand pane, clear the Use rule severity from the configuration file checkbox and select the severity level to use instead of the default one.

Importing code style from a TSLint configuration file

PhpStorm understands some of the TSLint rules described in tslint.json, tslint.yaml, or tslint.yml configuration files and lets you apply them to the TypeScript code style configuration in your project.

When you open your project for the first time, PhpStorm imports the code style from the project tslint.json, tslint.yaml, or tslint.yml automatically.
If tslint.json, tslint.yaml, or tslint.yml is updated (manually or from your version control), open it in the editor and choose Apply TSLint Code Style Rules from the context menu.
Alternatively, just answer Yes to the 'Apply code style from TSLint?' question on top of the file.

TSLint quick-fixes

PhpStorm lets you automatically fix some of the issues reported by TSLint.

To fix a specific error, place the cursor at the highlighted code, press Alt+Enter, and then select TSLint: fix current error from the list.
To fix all the issues detected in the file, choose TSLint: fix current file.

Phpstorm Line Endings

You can suppress TSLint rules for the current file and even for the current line. PhpStorm automatically generates disable comments in the format /* tslint:disable:<rule name> or // tslint:disable-next-line:<rule name> and places them on top of the file or above the current line respectively.

Suppress a TSLint rule on the fly

Place the cursor at an error or a warning reported by TSLint and press Alt+Enter.
Select the quick-fix for the rule that you want to disable and press Right.
From the list, select Suppress <rule name> for current file or Suppress <rule name> for current line.

Lint TypeScript code with ESLint

With PhpStorm, you can also check your TypeScript code with ESLint which brings a wide range of linting rules that can also be extended with plugins. PhpStorm shows warnings and errors reported by ESLint right in the editor, as you type. Learn more from ESLint.

PhpStorm highlights errors reported by ESLint in .ts and .tsx files when @typescript-eslint/parser is set as a parser in your project ESLint configuration. Learn more from the readme file in the typescript-eslint repo.

Install and configure ESLint

In the embedded Terminal (Alt+F12), type one of the following commands:
- npm install --g eslint for global installation.
- npm install --save-dev eslint to install ESLint as a development dependency.
By default, ESLint is disabled. Enable it as described in Activate and configure ESLint in PhpStorm'.

Phpstorm Js Linter

Use ESLint for TypeScript in a new project

In the embedded Terminal (Alt+F12), type:
npm install @typescript-eslint/parser @typescript-eslint/eslint-plugin --save-dev
If you installed ESLint globally, install @typescript-eslint/eslint-plugin globally as well. Learn more about installation and versions compatibility from the @typescript-eslint/eslint-plugin official documentation.
In the .eslintrc configuration file or under eslintConfig in package.json, add:
{ 'parser': '@typescript-eslint/parser', 'plugins': [ '@typescript-eslint' ], 'extends': [ 'plugin:@typescript-eslint/recommended' ] }

Suppress linting TypeScript code with ESLint

If you are already using @typescript-eslint/parser but you do not want to check TypeScript code with ESLint, add .ts or .tsx to the .eslintignore file.

ESLint 4.0

If you are using previous versions of ESLint, you have to install babel-eslint, typescript-eslint-parser, or eslint-plugin-typescript because ESLint 4.0 and earlier do not support scoped packages.

Use babel-eslint

In the embedded Terminal (Alt+F12), type:
npm install eslint babel-eslint --save-dev
Learn more about installation and versions compatibility from the babel-eslint official documentation.
In the .eslintrc configuration file or under eslintConfig in package.json, add:

Use typescript-eslint-parser

In the embedded Terminal (Alt+F12), type:
npm install typescript-eslint-parser --save-dev
Learn more from the typescript-eslint-parser official documentation.
In the .eslintrc configuration file or under eslintConfig in package.json, add:
{ 'parser': 'typescript-eslint-parser' }

Use eslint-plugin-typescript

Phpstorm Line Count

In the embedded Terminal (Alt+F12), type:
npm install typescript-eslint-parser eslint-plugin-typescript --save-dev
If you installed ESLint globally, install eslint-plugin-typescript globally as well. Learn more from the eslint-plugin-typescript official documentation.
In the .eslintrc configuration file or under eslintConfig in package.json, add:
{ 'parser': 'typescript-eslint-parser', 'plugins': [ 'eslint-plugin-typescript' ] }