.eslintrc.yaml

parserOptions:
    ecmaVersion: 2016

env:
    node: true

extends:
    - eslint:recommended

rules:
    # Possible Errors
    no-compare-neg-zero: error
    no-template-curly-in-string: warn

    # Best Practices
    array-callback-return: warn
    block-scoped-var: error
    curly: [ error, multi-line ]
    default-case: warn
    dot-location: [ error, property ]
    dot-notation: error
    eqeqeq: error
    guard-for-in: warn
    no-alert: warn
    no-caller: error
    no-console: 0
    no-div-regex: error
    no-eq-null: warn
    no-eval: error
    no-extend-native: error
    no-extra-bind: warn
    no-extra-label: error
    no-floating-decimal: error
    no-implicit-globals: error
    no-implied-eval: error
    no-invalid-this: warn
    no-iterator: error
    no-lone-blocks: error
    no-loop-func: warn
    no-multi-spaces: warn
    no-multi-str: error
    no-new: warn
    no-new-func: warn
    no-new-wrappers: warn
    no-octal-escape: error
    no-param-reassign: error
    no-proto: warn
    no-return-assign: error
    no-return-await: warn
    no-script-url: warn
    no-self-compare: warn
    no-sequences: error
    no-throw-literal: error
    no-unmodified-loop-condition: warn
    no-unused-expressions: warn
    no-useless-call: warn
    no-useless-concat: warn
    no-useless-escape: warn
    no-useless-return: warn
    no-with: error
    prefer-promise-reject-errors: error
    radix: warn
    require-await: error
    wrap-iife: error
    yoda: error

    # Variables
    init-declarations: error
    no-catch-shadow: warn
    no-label-var: error
    no-undefined: error
    no-use-before-define: error

    # Stylistic Issues
    array-bracket-spacing: [ warn, always ]
    block-spacing: [ warn, always ]
    brace-style: [ warn, 1tbs ]
    camelcase: warn
    comma-dangle: [ warn, always-multiline ]
    comma-spacing: [ warn, { before: false, after: true } ]
    comma-style: [ warn, last ]
    computed-property-spacing: [ warn, never ]
    eol-last: [ warn, always ]
    func-call-spacing: [ warn, never ]
    func-name-matching: error
    func-names: [ error, as-needed ]
    func-style: [ error, declaration, allowArrowFunctions: true ]
    indent: [ error, 4 ]
    key-spacing: [ warn, { beforeColon: false, afterColon: true } ]
    keyword-spacing: [ warn, { before: true, after: true } ]
    lines-around-directive: [ warn, always ]
    max-len: [ error, 100 ]
    new-cap: error
    new-parens: error
    newline-before-return: warn
    newline-per-chained-call: [ warn, ignoreChainWithDepth: 3 ]
    no-lonely-if: warn
    no-multi-assign: error
    no-multiple-empty-lines: warn
    no-new-object: error
    no-tabs: error
    no-trailing-spaces: error
    no-unneeded-ternary: warn
    no-whitespace-before-property: error
    nonblock-statement-body-position: [ error, beside ]
    #object-curly-newline: [ warn, multiline: true ]
    object-curly-spacing: [ warn, always ]
    object-property-newline: [ warn, allowMultiplePropertiesPerLine: true ]
    one-var: [ error, never ]
    operator-assignment: warn
    operator-linebreak: [ warn, before ]
    padded-blocks:
        - warn
        - { blocks: never, classes: always, switches: never }
    quote-props: [ warn, as-needed ]
    quotes: [ error, double, allowTemplateLiterals: true ]
    semi: error
    semi-spacing: [ warn, { before: false, after: true } ]
    space-before-blocks: [ warn, always ]
    space-before-function-paren:
        - warn
        - { anonymous: always, named: never, asyncArrow: always }
    space-in-parens: [ warn, never ]
    space-infix-ops: [ warn, int32Hint: true ]
    space-unary-ops: [ warn, { words: true, nonwords: false } ]
    template-tag-spacing: [ warn, never ]
    unicode-bom: error

    # ECMAScript 6
    arrow-body-style: [ error, as-needed ]
    arrow-parens: [ warn, as-needed, requireForBlockBody: true ]
    generator-star-spacing: [ warn, { before: false, after: true } ]
    no-duplicate-imports: error
    no-useless-computed-key: warn
    no-useless-constructor: error
    no-var: error
    object-shorthand: warn
    prefer-arrow-callback: [ warn, allowNamedFunctions: true ]
    prefer-const: warn
    prefer-numeric-literals: error
    prefer-rest-params: error
    prefer-spread: error
    prefer-template: warn
    rest-spread-spacing: [ warn, never ]
    template-curly-spacing: [ warn, never ]
    yield-star-spacing: [ warn, { before: false, after: true } ]