eslint.yaml

---
extends:
  - eslint:recommended
  - plugin:@typescript-eslint/eslint-recommended
  - plugin:@typescript-eslint/recommended
  - plugin:@typescript-eslint/recommended-requiring-type-checking
  - plugin:react/recommended
  - plugin:promise/recommended
  - plugin:jest/recommended
  - prettier
env:
  browser: true
  es6: true
  node: true
parser: "@typescript-eslint/parser"
parserOptions:
  project: tsconfig.json
  sourceType: module
plugins:
  - "@typescript-eslint"
  - react
  - unicorn
settings:
  react:
    version: detect
rules:
  consistent-return: error
  default-case: error
  default-param-last: error
  no-loop-func: off
  arrow-body-style: [error, as-needed]
  no-constant-condition: off

  unicorn/no-abusive-eslint-disable: error
  unicorn/no-array-instanceof: error
  unicorn/no-unreadable-array-destructuring: error
  unicorn/no-zero-fractions: error

  react/jsx-key: error
  react/jsx-pascal-case: error
  react/destructuring-assignment: warn
  react/function-component-definition: [error, {namedComponents: arrow-function, unnamedComponents: arrow-function}]
  react/no-array-index-key: error
  react/no-deprecated: error
  react/no-string-refs: error
  react/no-this-in-sfc: error
  react/no-typos: error
  react/no-unknown-property: error
  react/prefer-stateless-function: error
  react/prop-types: off

  jest/expect-expect: off
  jest/no-jasmine-globals: off

  promise/no-return-wrap: error
  promise/always-return: error
  promise/no-nesting: error
  "@typescript-eslint/array-type": [error, {default: array-simple}]
  "@typescript-eslint/await-thenable": error
  "@typescript-eslint/no-unused-vars": error
  "@typescript-eslint/no-use-before-define": off
  "@typescript-eslint/consistent-type-assertions": [error, {assertionStyle: as}]
  "@typescript-eslint/no-unsafe-return": off
  "@typescript-eslint/no-unsafe-assignment": off
  "@typescript-eslint/no-unsafe-member-access": off
  "@typescript-eslint/explicit-module-boundary-types": off
  "@typescript-eslint/no-unsafe-call": off
  "@typescript-eslint/ban-types": off
  "@typescript-eslint/restrict-template-expressions": off
  # supported in newer version, but not compatible with our react-scripts version
  # "@typescript-eslint/explicit-member-accessibility": [error, {accessibility: explicit}]
  # "@typescript-eslint/no-non-null-asserted-optional-chain": error
  # "@typescript-eslint/no-unnecessary-boolean-literal-compare": error
  # "@typescript-eslint/prefer-as-const": error
  # "@typescript-eslint/switch-exhaustiveness-check": error
  # "@typescript-eslint/explicit-module-boundary-types": error

  "@typescript-eslint/no-extra-non-null-assertion": error
  "@typescript-eslint/no-inferrable-types": error
  "@typescript-eslint/no-misused-promises": off
  "@typescript-eslint/no-this-alias": error
  "@typescript-eslint/no-throw-literal": error
  "@typescript-eslint/prefer-nullish-coalescing": error
  "@typescript-eslint/prefer-optional-chain": error
  "@typescript-eslint/prefer-readonly": error
  "@typescript-eslint/unbound-method": error
  "@typescript-eslint/explicit-function-return-type": [error, {allowExpressions: true, allowTypedFunctionExpressions: true, allowHigherOrderFunctions: true,}]
  "@typescript-eslint/no-unnecessary-condition": off
  "@typescript-eslint/no-unsafe-argument": off

  #debatable
  "react/display-name": off #does not recognize function component names
  "@typescript-eslint/no-floating-promises": off #we edit state in async overmind actions and throw errors, therefore no problem
  "@typescript-eslint/no-non-null-assertion": off #we assert values because a lot of ff id's are optional, even though, they really aren't
  "@typescript-eslint/camelcase": off #we use _ in some of our variables and attributes
  "promise/catch-or-return": off #conflicts with handleApiError function that is used for error toasts
  "@typescript-eslint/ban-ts-ignore": off
  "no-case-declarations": off #case with {} just isn't good

  "@typescript-eslint/no-explicit-any": off #the legend tells of a hero with extensive Generics knowledge, that is able to enforce this rule