env:
  browser: false
  node: true
  es6: true
  jest: true
parser: '@typescript-eslint/parser'
plugins:
  - '@typescript-eslint'
  - 'prettier'
extends:
  - 'eslint:recommended'
  - 'plugin:@typescript-eslint/recommended'
  - 'plugin:prettier/recommended'
  - 'plugin:import/errors'
  - 'plugin:import/warnings'
  - 'plugin:import/typescript'
parserOptions:
  ecmaVersion: 2018
  sourceType: module
rules:
  '@typescript-eslint/indent':
    - off
  '@typescript-eslint/no-use-before-define':
    - off
  '@typescript-eslint/explicit-function-return-type':
    - error
    - allowExpressions: true
      allowTypedFunctionExpressions: true
      allowHigherOrderFunctions: true
  '@typescript-eslint/no-empty-interface':
    - error
    - allowSingleExtends: true
  'import/named':
    # eslint-plugin-import fails with typescript interfaces
    - off
  'import/order':
    - error
    - newlines-between: always
      alphabetize:
        order: asc
  'prettier/prettier':
    - error
    - singleQuote: true
      trailingComma: all
      printWidth: 79
  'prefer-const':
    - error
    - destructuring: all