Service Dev eslint

.eslintrc.yml

---
env:
  es6: true
  node: true
  mocha: true
extends: eslint:recommended
parserOptions:
  ecmaVersion: 9 # ECMAScript2018
rules:
  no-console: error # deploy 단계에선 console.log를 지우고 올리거나 주석 처리를 한다.
  indent:
  - error
  - tab
  linebreak-style: # CRLF
  - error
  - windows
  quotes:
  - error
  - single
  semi:
  - error
  - never
  no-new-object: error # new Object()
  no-array-constructor: error # new Array()
  no-new-func: error # new Function()
  object-shorthand: # https://eslint.org/docs/rules/object-shorthand.html
  - error
  - always
  quote-props: # https://eslint.org/docs/rules/quote-props.html
  - error
  - as-needed # e.g.) 'is-props'

  space-before-function-paren: # https://eslint.org/docs/rules/space-before-function-paren
  - error
  - anonymous: always
    named: never
    asyncArrow: always
  space-before-blocks: # https://eslint.org/docs/rules/space-before-blocks
  - error
  - always
  array-callback-return: error # https://eslint.org/docs/rules/array-callback-return
  prefer-template: error # use `hello ${name}!`
  template-curly-spacing: # https://eslint.org/docs/rules/template-curly-spacing
  - error
  - never # use `hello ${name}!`, not `hello ${ name}!`
  no-eval: error
#   func-style: # TODO:

  no-param-reassign: error # https://eslint.org/docs/rules/no-param-reassign.html
  function-paren-newline: # https://eslint.org/docs/rules/function-paren-newline
  - error
  - multiline #  하나에 줄 바꿈이 있으면 함수 괄호 안에 줄 바꿈이 필요합니다. 그렇지 않으면 줄 바꿈을 허용하지 않습니다.
  prefer-arrow-callback: error
  arrow-spacing:
  - error
  - before: true # () => {}
    after: true # () => {}
  eqeqeq:
  - error
  - always # use ===
  brace-style:
  - error
  - 1tbs
  - allowSingleLine: true
  nonblock-statement-body-position:
  - error
  - beside
  no-else-return: # https://eslint.org/docs/rules/no-else-return
  - error
  - allowElseIf: true
  dot-notation: # https://eslint.org/docs/rules/dot-notation.html
  - error
  no-undef: 
  - error # global https://eslint.org/docs/user-guide/configuring#specifying-globals
  prefer-const: # https://eslint.org/docs/rules/prefer-const
  - error
  - destructuring: all # allow let {a, b} = obj
  one-var:
  - error
  - never
  no-multi-assign:
  - error
  no-unused-vars:
  - error
  no-unneeded-ternary: # https://eslint.org/docs/rules/no-unneeded-ternary.html
  - error
  - defaultAssignment: false # use default parameter
  no-mixed-operators:
  - error
  spaced-comment:
  - warn
  - always
  keyword-spacing: # https://eslint.org/docs/rules/keyword-spacing.html
  - error
  - before: true 
    after: true 
  space-infix-ops:
  - warn # default parameter 옵션 때문에 warning
  newline-per-chained-call: # https://eslint.org/docs/rules/newline-per-chained-call
  - error
  - ignoreChainWithDepth: 2
  no-whitespace-before-property:
  - error
  padded-blocks: # https://eslint.org/docs/rules/padded-blocks.html
  - error
  - blocks: never
    classes: never
    switches: never
  space-in-parens:
  - error
  - never
  # - exceptions: 
  #   - ()
  array-bracket-spacing:
  - warn
  - never
  - arraysInArrays: true
  object-curly-spacing:
  - warn
  - never
  # max-len:
  # - warn
  # - code: 80
  block-spacing: # https://eslint.org/docs/rules/block-spacing
  - error
  comma-spacing:
  - error
  - before: false 
    after: true
  computed-property-spacing:
  - error
  - never
  func-call-spacing:
  - error
  - never
  key-spacing: # https://eslint.org/docs/rules/key-spacing
  - error # align은 자유
  - beforeColon: false
    afterColon: true
  no-multiple-empty-lines:
  - warn
  comma-style:
  - error
  - last
  comma-dangle: # https://eslint.org/docs/rules/comma-dangle.html
  - warn
  - always-multiline
  - functions: never