eslint-config-p-ts v0.2.0

eslint-config-p-ts

This package provides P's base TS .eslintrc as an extensible shared config.

This configure was created from this document. https://github.com/basarat/typescript-book/blob/master/docs/styleguide/styleguide.md

Changed rules from TypeScript books style guide

Naming

MUST Use prefix I to interface

Yes, it is useless, but rules is not unnecessary in rules. I think, don't use prefix I is also perfect rule. You can customize it in your project.

Bad

interface MyProps {
  hoge: string;
  fuga: number;
}

Good

interface IMyProps {
  hoge: string;
  fuga: number;
}

Export

SHOULD No export default

Please ignore this when needs use default export in framework. (eg Nuxt's middleware)

Bad

class Foo {}
export default Foo;

Good

export class Foo {}

Semicolon

MUST Use Semicolons in interfaces

In TypeScript, you can separate interfaces with semicolons, also can use commas too. But modern coding rule is recommended use semicolon.

Bad

interface Hoge {
  huga: string,
  piyo: number,
}

const foo: { bar: string, baz: number } = { bar: 'bar', baz: 0 };

Good

interface Hoge {
  huga: string;
  piyo: number;
}

const foo: { bar: string; baz: number; } = { bar: 'bar', baz: 0 };

Usage

Packaged our JavaScript / TypeScript coding standard.

1. Install dependencies packages.

yarn add -D eslint-config-p-ts

2. Add your .eslintrc 's extends section.

extends: ['p-ts']

Please note here has meaning to the position. We prefer put it last or put before prettier.