Add Prettier for code formatting

[ZeroWave022]

While everyone has their own coding style, using one code formatter with a configuration file will make sure everyone is following one code style.

[Walledgarden]

Actually, prettier is already installed and used, but not configured.

[ZeroWave022]

I see, any suggestions for the config file?

[Walledgarden]

I'm personally using those (for eslint and prettier). It would be proably smart adding the prettier plugin to the eslint config too. (Edit: already there)
If we mainly want to use prettier, we should make a more advanced config file tho.

.prettierrc.json

{
  "singleQuote": true
}

.prettierignore

# Ignore artifacts:
build
coverage
dist

.eslintrc.js

module.exports = {
  root: true,
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint', 'import', 'prettier'],
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'airbnb-typescript/base',
  ],
  parserOptions: {
    project: './tsconfig.json',
  },
  ignorePatterns: ['dist/**/*.js'],
  rules: {
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-var-requires': 'off',
    '@typescript-eslint/no-unused-vars': 'off',
  },
};