extends:
  - plugin:import/errors
  - plugin:import/warnings
  - plugin:prettier/recommended # last

plugins:
  - prettier
  - import

parser: babel-eslint

parserOptions:
  ecmaVersion: 2019
  # sourceType: module

env:
  es6: true

rules:
  # --- defaults ---

  # prettier: some rules are kept for reference but commented out to avoid
  #   conflicts with prettier

  getter-return: warn
  handle-callback-err: warn
  no-async-promise-executor: warn
  no-cond-assign: warn
  no-console: warn
  no-const-assign: error
  no-control-regex: warn
  no-debugger: warn
  no-delete-var: error
  no-dupe-args: warn
  no-dupe-class-members: warn
  no-dupe-keys: warn
  no-duplicate-case: warn
  no-duplicate-imports: warn
  no-empty-character-class: warn
  no-empty-pattern: warn
  no-floating-decimal: off
  no-global-assign: error
  no-irregular-whitespace: error
  no-loop-func: warn
  no-mixed-operators: off
  no-new-symbol: error
  no-obj-calls: error
  no-redeclare: error
  no-regex-spaces: warn
  no-return-assign: warn
  no-self-compare: error
  no-tabs: off # prettier
  no-throw-literal: warn
  no-trailing-spaces: warn
  no-undef: error
  no-unreachable: warn
  no-unsafe-finally: error
  no-unsafe-negation: error
  no-unused-expressions: [error, {allowShortCircuit: true, allowTernary: true}]
  no-unused-vars: [warn, { args: after-used }]
  no-useless-constructor: warn
  no-useless-rename: warn
  # no-warning-comments warns on DEBUG & XXX comments, that you probably
  # don't want to commit; longer term flags like TODO and FIXME are fine
  no-warning-comments: [warn, {terms: [debug, xxx]}]
  no-var: warn
  # operator-linebreak: [warn, before, overrides: { =: after }]
  operator-linebreak: off # prettier
  padded-blocks: off
  prefer-const: warn
  # quotes: [warn, single, {avoidEscape: true}]
  quotes: off # prettier
  indent: [off, 2]
  # require-atomic-updates keeps giving, apparently buggy, false errors
  require-atomic-updates: off
  space-before-function-paren: off
  space-before-blocks: off
  symbol-description: warn
  template-curly-spacing: off # fails on ${'' /* comment */}
  use-isnan: error
  valid-typeof: error

  # --- import---

  import/first: off
  import/no-named-as-default: off