.eslint.base.yml

---
rules:
    # Best Practices (https://eslint.org/docs/rules/#best-practices)
    curly:
        - warn
        - all
    dot-notation:
        - error
        - allowPattern: '^[a-z]+(_[a-z]+)+$'
    eqeqeq:
        - warn
        - always
    guard-for-in: error
    no-new-wrappers: error
    no-param-reassign: error
    no-return-assign:
        - error
        - always
    no-return-await: error
    no-self-compare: error
    no-sequences: error
    no-throw-literal: error
    no-unmodified-loop-condition: error
    no-unused-expressions: error
    no-useless-concat: error
    no-useless-return: error
    no-void: error
    no-with: error
    wrap-iife:
        - error
        - inside
    yoda:
        - error
        - never
        - exceptRange: true

    # Stylistic Issues (https://eslint.org/docs/rules/#stylistic-issues)
    func-style:
        - error
        - declaration
        - allowArrowFunctions: true
    no-mixed-operators:
        - error
        - groups:
              - - '&'
                - '|'
                - '^'
                - '~'
                - '<<'
                - '>>'
                - '>>>'
              - - '=='
                - '!='
                - '==='
                - '!=='
                - '>'
                - '>='
                - '<'
                - '<='
              - - '&&'
                - '||'
              - - in
                - instanceof
          allowSamePrecedence: true
    no-multi-assign: error
    no-negated-condition: error
    no-nested-ternary: error
    no-new-object: error
    no-plusplus:
        - error
        - allowForLoopAfterthoughts: true
    no-unneeded-ternary: error
    operator-assignment:
        - error
        - always
    prefer-object-spread: error
    spaced-comment:
        - warn
        - always
        - block:
              balanced: true

    # ECMAScript 6 (https://eslint.org/docs/rules/#ecmascript-6)
    arrow-body-style:
        - error
        - as-needed
    no-confusing-arrow:
        - error
        - allowParens: true
    no-var: error
    prefer-const: error
    prefer-rest-params: error
    prefer-spread: error
    prefer-template: error