eslint-config-eloquence
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Adaptive, robust, eloquent ESLint configuration
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">'use strict'
/**
* ESLint core 'Possible Errors' rules are focused on catching possible syntax
* or logic errors
*/
module.exports = {
// enforce “for” loop update clause moving the counter in the right direction
// https://eslint.org/docs/rules/for-direction
'for-direction': 'error',
// enforce a return statement is present in property getters
// https://eslint.org/docs/rules/getter-return
'getter-return': ['error', { allowImplicit: true }],
// disallow using an async function as a Promise executor
// https://eslint.org/docs/rules/no-async-promise-executor
'no-async-promise-executor': 'error',
// disallow await inside of loops
// https://eslint.org/docs/rules/no-await-in-loop
'no-await-in-loop': 'error',
// Disallow comparisons to negative zero
// https://eslint.org/docs/rules/no-compare-neg-zero
'no-compare-neg-zero': 'error',
// disallow assignment in conditional expressions
'no-cond-assign': ['error', 'always'],
// Allow console.log as a default everywhere for tooling, production code is
// covered by /src override
'no-console': 'off',
// disallow use of constant expressions in conditions
'no-constant-condition': 'warn',
// disallow control characters in regular expressions
'no-control-regex': 'error',
// disallow use of debugger (in production code)
'no-debugger': 'error',
// disallow duplicate arguments in functions
'no-dupe-args': 'error',
// prevent duplicate conditions in else/if
// https://eslint.org/docs/rules/no-dupe-else-if
'no-dupe-else-if': 'error',
// disallow duplicate keys when creating object literals
'no-dupe-keys': 'error',
// disallow a duplicate case label.
'no-duplicate-case': 'error',
// disallow empty statements
'no-empty': 'error',
// disallow the use of empty character classes in regular expressions
'no-empty-character-class': 'error',
// disallow assigning to the exception in a catch block
'no-ex-assign': 'error',
// disallow double-negation boolean casts in a boolean context
// https://eslint.org/docs/rules/no-extra-boolean-cast
'no-extra-boolean-cast': 'error',
// TODO: enable in a large codebase and see what happens
'no-extra-parens': 'off',
// forbid extra semi colons
// https://eslint.org/docs/rules/no-extra-semi
'no-extra-semi': 'error',
// disallow overwriting functions written as function declarations
'no-func-assign': 'error',
// disallow assignments, increments, and decrements of imported bindings
// https://eslint.org/docs/rules/no-import-assign
'no-import-assign': 'error',
// disallow function or variable declarations in nested blocks
'no-inner-declarations': 'error',
// disallow invalid regular expression strings in the RegExp constructor
'no-invalid-regexp': 'error',
// disallow irregular whitespace outside of strings and comments
'no-irregular-whitespace': 'error',
// Disallow characters which are made with multiple code points in character class syntax
// https://eslint.org/docs/rules/no-misleading-character-class
'no-misleading-character-class': 'error',
// disallow the use of object properties of the global object (Math and JSON) as functions
// https://eslint.org/docs/rules/no-obj-calls
'no-obj-calls': 'error',
// disallow use of Object.prototypes builtins directly
// https://eslint.org/docs/rules/no-prototype-builtins
'no-prototype-builtins': 'error',
// disallow multiple spaces in a regular expression literal
// https://eslint.org/docs/rules/no-regex-spaces
'no-regex-spaces': 'error',
// disallow returning values in ES6 setters
// https://eslint.org/docs/rules/no-setter-return
'no-setter-return': 'error',
// disallow initializing arrays with missing elements
// https://eslint.org/docs/rules/no-sparse-arrays
'no-sparse-arrays': 'error',
// Disallow template literal placeholder syntax in regular strings
// https://eslint.org/docs/rules/no-template-curly-in-string
'no-template-curly-in-string': 'error',
// Prevent confusing multiline expressions that could cause errors without semis
// https://eslint.org/docs/rules/no-unexpected-multiline
'no-unexpected-multiline': 'error',
// disallow unreachable statements after a return, throw, continue, or break statement
// https://eslint.org/docs/rules/no-unreachable
'no-unreachable': 'error',
// disallow return/throw/break/continue inside finally blocks
// https://eslint.org/docs/rules/no-unsafe-finally
'no-unsafe-finally': 'error',
// disallow negating the left operand of relational operators
// https://eslint.org/docs/rules/no-unsafe-negation
'no-unsafe-negation': 'error',
// Disallow assignments that can lead to race conditions due to usage of await or yield
// Disabled b/c rule is too agressive and causes many false positives, eg React refs
// or Express middleware assignments
// Ref https://github.com/eslint/eslint/issues/11899
'require-atomic-updates': 'off',
// disallow comparisons with the value NaN
// https://eslint.org/docs/rules/use-isnan
'use-isnan': 'error',
// ensure that the results of typeof are compared against a valid string
// https://eslint.org/docs/rules/valid-typeof
'valid-typeof': ['error', { requireStringLiterals: true }],
}
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