eslint config daangemist

Installation

npm install --save-dev \
    concurrently \
    eslint \
    typescript \
    prettier \
    @typescript-eslint/eslint-plugin \
    @typescript-eslint/parser \
    eslint-plugin-only-warn \
    eslint-plugin-import \
    eslint-import-resolver-typescript \
    eslint-plugin-unicorn \
    eslint-config-daangemist

On a preact project, also run:

npm install --save-dev \
    eslint-config-preact

Prettier

Add "prettier": "eslint-config-daangemist/.prettierrc" to your package.json

Eslint

Create an .eslintrc with:

{
    "extends": ["daangemist"],
    "env": {
        "browser": true,
        "node": true
    },
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "project": "./tsconfig.json"
    }
}

When using project, change daangemist into daangemist/preact

Npm scripts

Add these scripts:

"scripts": {
    "lint": "concurrently --kill-others-on-fail \"npm:lint:*\"",
    "lint:prettier": "prettier --check --log-level=warn src",
    "lint:tsc": "tsc --noEmit",
    "lint:eslint": "eslint --ext=js,jsx,ts,tsx --max-warnings=0 src",
    "format": "prettier --write src && eslint --ext=js,jsx,ts,tsx --fix src",
}

.editorconfig

Add an .editorconfig file to your project with the contents below.

root = true

[*/**.{ts,tsx,json,js}]
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true
indent_style = space
indent_size = 2

Download it using: wget https://unpkg.com/eslint-config-daangemist/.editorconfig.