A starter project for creating rules for TSLint

Includes:

• Simple rule example
• Tests for this rule
• Sandbox for development
• Building configuration
• Jest expect methods

Main language: TypeScript
Package manager: yarn

Get started

yarn install - to install dependencies

Scripts

• dev - runs the lint for sandbox
• test - runs rules tests
• build - compile project to dist folder

How to use it in your consumer project

Delivery it to node_modules (as npm package or just copy) and configure tslint.json of your project.

{
    "rulesDirectory": [
        ...
        "node_modules/rules"
    ],
    "rules": {
        ...
        "no-multiline-ternary": true
    }
}

Project structure

.
├── dist - Output folder, compiled rules will be there
├── helpers
│   └── linter.ts - Used for running linter in specs
├── rules - Rules and specs
├── sandbox.ts - Develop and test you rules here
├── tsconfig.dev.json - Config for running lint only for sandbox
├── tsconfig.json - TS configuration for current project
├── tsconfig.spec.json - TS configuration for jest
├── tslint.json - TS Lint configuration for current project
├── package.json
├── README.md
└── yarn.lock

Why do we have that dev dependencies?

• @types/* - contains type definitions for specific library.
• jest - testing framework to write unit specs.
• ts-jest - it lets you use Jest to test projects written in TypeScript.
• tslint - it checks TypeScript code for readability, maintainability, and functionality errors.
• typescript - is a superset of JavaScript that have static type-checking and ECMAScript features.