Available Rules

This plugin provides the following rules.

• 🔧 mark means that the --fix option on the command line can automatically fix some of the problems reported by the rule.

ES2024

There is a config that enables the rules in this category: no-new-in-esnext

Rule ID	Description
es-x/no-arraybuffer-prototype-transfer	disallow the ArrayBuffer.prototype.transfer method.
es-x/no-atomics-waitasync	disallow the Atomics.waitAsync method.
es-x/no-object-map-groupby	disallow the {Object,Map}.groupBy() function (array grouping).
es-x/no-promise-withresolvers	disallow the Promise.withResolvers() method.
es-x/no-regexp-v-flag	disallow RegExp v flag.
es-x/no-resizable-and-growable-arraybuffers	disallow resizable and growable ArrayBuffers.
es-x/no-string-prototype-iswellformed-towellformed	disallow the String.prototype.{isWellFormed,toWellFormed} methods.

ES2023

There are multiple configs that enable all rules in this category: no-new-in-es2023, restrict-to-es3, restrict-to-es5, restrict-to-es2015, restrict-to-es2016, restrict-to-es2017, restrict-to-es2018, restrict-to-es2019, restrict-to-es2020, restrict-to-es2021, and restrict-to-es2022

Rule ID	Description
es-x/no-array-prototype-findlast-findlastindex	disallow the Array.prototype.{findLast,findLastIndex} methods.
es-x/no-array-prototype-toreversed	disallow the Array.prototype.toReversed method.
es-x/no-array-prototype-tosorted	disallow the Array.prototype.toSorted method.
es-x/no-array-prototype-tospliced	disallow the Array.prototype.toSpliced method.
es-x/no-array-prototype-with	disallow the Array.prototype.with method.
es-x/no-hashbang	disallow Hashbang comments.
es-x/no-regexp-unicode-property-escapes-2023	disallow the new values of RegExp Unicode property escape sequences in ES2023.

ES2023 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2023-intl-api, restrict-to-es-intl-api-1st-edition, restrict-to-es2015-intl-api, restrict-to-es2016-intl-api, restrict-to-es2017-intl-api, restrict-to-es2018-intl-api, restrict-to-es2019-intl-api, restrict-to-es2020-intl-api, restrict-to-es2021-intl-api, and restrict-to-es2022-intl-api

Rule ID	Description
es-x/no-intl-numberformat-prototype-formatrange	disallow the NumberFormat.prototype.formatRange method.
es-x/no-intl-numberformat-prototype-formatrangetoparts	disallow the NumberFormat.prototype.formatRangeToParts method.
es-x/no-intl-pluralrules-prototype-selectrange	disallow the PluralRules.prototype.selectRange method.

ES2022

There are multiple configs that enable all rules in this category: no-new-in-es2022, restrict-to-es3, restrict-to-es5, restrict-to-es2015, restrict-to-es2016, restrict-to-es2017, restrict-to-es2018, restrict-to-es2019, restrict-to-es2020, and restrict-to-es2021

Rule ID	Description
es-x/no-arbitrary-module-namespace-names	disallow arbitrary module namespace names.
es-x/no-array-string-prototype-at	disallow the {Array,String}.prototype.at() methods.
es-x/no-class-fields	disallow class fields.
es-x/no-class-static-block	disallow class static block.
es-x/no-error-cause	disallow Error Cause.
es-x/no-object-hasown	disallow the Object.hasOwn method.
es-x/no-private-in	disallow #x in obj.
es-x/no-regexp-d-flag	disallow RegExp d flag.
es-x/no-regexp-unicode-property-escapes-2022	disallow the new values of RegExp Unicode property escape sequences in ES2022.
es-x/no-top-level-await	disallow top-level await.

ES2022 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2022-intl-api, restrict-to-es-intl-api-1st-edition, restrict-to-es2015-intl-api, restrict-to-es2016-intl-api, restrict-to-es2017-intl-api, restrict-to-es2018-intl-api, restrict-to-es2019-intl-api, restrict-to-es2020-intl-api, and restrict-to-es2021-intl-api

Rule ID	Description
es-x/no-intl-segmenter	disallow the Intl.Segmenter object.
es-x/no-intl-supportedvaluesof	disallow the Intl.supportedValuesOf method.

ES2021

There are multiple configs that enable all rules in this category: no-new-in-es2021, restrict-to-es3, restrict-to-es5, restrict-to-es2015, restrict-to-es2016, restrict-to-es2017, restrict-to-es2018, restrict-to-es2019, and restrict-to-es2020

Rule ID	Description
es-x/no-logical-assignment-operators	disallow logical assignment operators.	🔧
es-x/no-numeric-separators	disallow numeric separators.	🔧
es-x/no-promise-any	disallow Promise.any function and AggregateError class.
es-x/no-regexp-unicode-property-escapes-2021	disallow the new values of RegExp Unicode property escape sequences in ES2021.
es-x/no-string-prototype-replaceall	disallow the String.prototype.replaceAll method.
es-x/no-weakrefs	disallow the WeakRef and FinalizationRegistry class.

ES2021 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2021-intl-api, restrict-to-es-intl-api-1st-edition, restrict-to-es2015-intl-api, restrict-to-es2016-intl-api, restrict-to-es2017-intl-api, restrict-to-es2018-intl-api, restrict-to-es2019-intl-api, and restrict-to-es2020-intl-api

Rule ID	Description
es-x/no-intl-datetimeformat-prototype-formatrange	disallow the Intl.DateTimeFormat.prototype.formatRange method.
es-x/no-intl-displaynames	disallow the Intl.DisplayNames object.
es-x/no-intl-listformat	disallow the Intl.ListFormat object.

ES2020

There are multiple configs that enable all rules in this category: no-new-in-es2020, restrict-to-es3, restrict-to-es5, restrict-to-es2015, restrict-to-es2016, restrict-to-es2017, restrict-to-es2018, and restrict-to-es2019

Rule ID	Description
es-x/no-bigint	disallow bigint syntax and built-ins.
es-x/no-dynamic-import	disallow import() syntax.
es-x/no-export-ns-from	disallow export * as ns.
es-x/no-global-this	disallow the globalThis variable.
es-x/no-import-meta	disallow import.meta meta property.
es-x/no-nullish-coalescing-operators	disallow nullish coalescing operators.
es-x/no-optional-chaining	disallow optional chaining.
es-x/no-promise-all-settled	disallow Promise.allSettled function.
es-x/no-regexp-unicode-property-escapes-2020	disallow the new values of RegExp Unicode property escape sequences in ES2020.
es-x/no-string-prototype-matchall	disallow the String.prototype.matchAll method.

ES2020 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2020-intl-api, restrict-to-es-intl-api-1st-edition, restrict-to-es2015-intl-api, restrict-to-es2016-intl-api, restrict-to-es2017-intl-api, restrict-to-es2018-intl-api, and restrict-to-es2019-intl-api

Rule ID	Description
es-x/no-intl-locale	disallow the Intl.Locale object.
es-x/no-intl-relativetimeformat	disallow the Intl.RelativeTimeFormat object.

ES2019

There are multiple configs that enable all rules in this category: no-new-in-es2019, restrict-to-es3, restrict-to-es5, restrict-to-es2015, restrict-to-es2016, restrict-to-es2017, and restrict-to-es2018

Rule ID	Description
es-x/no-array-prototype-flat	disallow the Array.prototype.{flat,flatMap} method.
es-x/no-json-superset	disallow \u2028 and \u2029 in string literals.	🔧
es-x/no-object-fromentries	disallow the Object.fromEntries method.
es-x/no-optional-catch-binding	disallow optional catch binding.
es-x/no-regexp-unicode-property-escapes-2019	disallow the new values of RegExp Unicode property escape sequences in ES2019.
es-x/no-string-prototype-trimstart-trimend	disallow the String.prototype.{trimStart,trimEnd} methods.
es-x/no-symbol-prototype-description	disallow the Symbol.prototype.description property.

ES2018

There are multiple configs that enable all rules in this category: no-new-in-es2018, restrict-to-es3, restrict-to-es5, restrict-to-es2015, restrict-to-es2016, and restrict-to-es2017

Rule ID	Description
es-x/no-async-iteration	disallow async iteration.
es-x/no-malformed-template-literals	disallow template literals with invalid escape sequences.
es-x/no-promise-prototype-finally	disallow the Promise.prototype.finally method.
es-x/no-regexp-lookbehind-assertions	disallow RegExp lookbehind assertions.
es-x/no-regexp-named-capture-groups	disallow RegExp named capture groups.
es-x/no-regexp-s-flag	disallow RegExp s flag.
es-x/no-regexp-unicode-property-escapes	disallow RegExp Unicode property escape sequences.
es-x/no-rest-spread-properties	disallow rest/spread properties.

ES2018 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2018-intl-api, restrict-to-es-intl-api-1st-edition, restrict-to-es2015-intl-api, restrict-to-es2016-intl-api, and restrict-to-es2017-intl-api

Rule ID	Description
es-x/no-intl-numberformat-prototype-formattoparts	disallow the NumberFormat.prototype.formatToParts method.
es-x/no-intl-pluralrules	disallow the Intl.PluralRules object.

ES2017

There are multiple configs that enable all rules in this category: no-new-in-es2017, restrict-to-es3, restrict-to-es5, restrict-to-es2015, and restrict-to-es2016

Rule ID	Description
es-x/no-async-functions	disallow async function declarations.
es-x/no-atomics	disallow the Atomics class.
es-x/no-object-entries	disallow the Object.entries method.
es-x/no-object-getownpropertydescriptors	disallow the Object.getOwnPropertyDescriptors method.
es-x/no-object-values	disallow the Object.values method.
es-x/no-shared-array-buffer	disallow the SharedArrayBuffer class.
es-x/no-string-prototype-padstart-padend	disallow the String.prototype.{padStart,padEnd} methods.
es-x/no-trailing-function-commas	disallow trailing commas in parameter/argument lists.	🔧

ES2017 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2017-intl-api, restrict-to-es-intl-api-1st-edition, restrict-to-es2015-intl-api, and restrict-to-es2016-intl-api

Rule ID	Description
es-x/no-intl-datetimeformat-prototype-formattoparts	disallow the DateTimeFormat.prototype.formatToParts method.

ES2016

There are multiple configs that enable all rules in this category: no-new-in-es2016, restrict-to-es3, restrict-to-es5, and restrict-to-es2015

Rule ID	Description
es-x/no-array-prototype-includes	disallow the Array.prototype.includes method.
es-x/no-exponential-operators	disallow exponential operators.

ES2016 Intl API

There are multiple configs that enable all rules in this category: no-new-in-es2016-intl-api, restrict-to-es-intl-api-1st-edition, and restrict-to-es2015-intl-api

Rule ID	Description
es-x/no-intl-getcanonicallocales	disallow the Intl.getCanonicalLocales method.

ES2015

There are multiple configs that enable all rules in this category: no-new-in-es2015, restrict-to-es3, and restrict-to-es5

Rule ID	Description
es-x/no-array-from	disallow the Array.from method.
es-x/no-array-of	disallow the Array.of method.
es-x/no-array-prototype-copywithin	disallow the Array.prototype.copyWithin method.
es-x/no-array-prototype-entries	disallow the Array.prototype.entries method.
es-x/no-array-prototype-fill	disallow the Array.prototype.fill method.
es-x/no-array-prototype-find	disallow the Array.prototype.find method.
es-x/no-array-prototype-findindex	disallow the Array.prototype.findIndex method.
es-x/no-array-prototype-keys	disallow the Array.prototype.keys method.
es-x/no-array-prototype-values	disallow the Array.prototype.values method.
es-x/no-arrow-functions	disallow arrow function expressions.	🔧
es-x/no-binary-numeric-literals	disallow binary numeric literals.
es-x/no-block-scoped-functions	disallow block-scoped function declarations.
es-x/no-block-scoped-variables	disallow block-scoped variable declarations.
es-x/no-classes	disallow class declarations.
es-x/no-computed-properties	disallow computed properties.
es-x/no-default-parameters	disallow default parameters.
es-x/no-destructuring	disallow destructuring.
es-x/no-for-of-loops	disallow for-of statements.
es-x/no-generators	disallow generator function declarations.
es-x/no-map	disallow the Map class.
es-x/no-math-acosh	disallow the Math.acosh method.
es-x/no-math-asinh	disallow the Math.asinh method.
es-x/no-math-atanh	disallow the Math.atanh method.
es-x/no-math-cbrt	disallow the Math.cbrt method.
es-x/no-math-clz32	disallow the Math.clz32 method.
es-x/no-math-cosh	disallow the Math.cosh method.
es-x/no-math-expm1	disallow the Math.expm1 method.
es-x/no-math-fround	disallow the Math.fround method.
es-x/no-math-hypot	disallow the Math.hypot method.
es-x/no-math-imul	disallow the Math.imul method.
es-x/no-math-log10	disallow the Math.log10 method.
es-x/no-math-log1p	disallow the Math.log1p method.
es-x/no-math-log2	disallow the Math.log2 method.
es-x/no-math-sign	disallow the Math.sign method.
es-x/no-math-sinh	disallow the Math.sinh method.
es-x/no-math-tanh	disallow the Math.tanh method.
es-x/no-math-trunc	disallow the Math.trunc method.
es-x/no-modules	disallow modules.
es-x/no-new-target	disallow new.target meta property.
es-x/no-number-epsilon	disallow the Number.EPSILON property.
es-x/no-number-isfinite	disallow the Number.isFinite method.
es-x/no-number-isinteger	disallow the Number.isInteger method.
es-x/no-number-isnan	disallow the Number.isNaN method.
es-x/no-number-issafeinteger	disallow the Number.isSafeInteger method.
es-x/no-number-maxsafeinteger	disallow the Number.MAX_SAFE_INTEGER property.
es-x/no-number-minsafeinteger	disallow the Number.MIN_SAFE_INTEGER property.
es-x/no-number-parsefloat	disallow the Number.parseFloat method.
es-x/no-number-parseint	disallow the Number.parseInt method.
es-x/no-object-assign	disallow the Object.assign method.
es-x/no-object-getownpropertysymbols	disallow the Object.getOwnPropertySymbols method.
es-x/no-object-is	disallow the Object.is method.
es-x/no-object-setprototypeof	disallow the Object.setPrototypeOf method.
es-x/no-object-super-properties	disallow super property accesses in object literals.
es-x/no-octal-numeric-literals	disallow octal numeric literals.
es-x/no-promise	disallow the Promise class.
es-x/no-property-shorthands	disallow property shorthands.	🔧
es-x/no-proxy	disallow the Proxy class.
es-x/no-reflect	disallow the Reflect class.
es-x/no-regexp-prototype-flags	disallow the RegExp.prototype.flags property.
es-x/no-regexp-u-flag	disallow RegExp u flag.
es-x/no-regexp-y-flag	disallow RegExp y flag.
es-x/no-rest-parameters	disallow rest parameters.
es-x/no-set	disallow the Set class.
es-x/no-spread-elements	disallow spread elements.
es-x/no-string-fromcodepoint	disallow the String.fromCodePoint method.
es-x/no-string-prototype-codepointat	disallow the String.prototype.codePointAt method.
es-x/no-string-prototype-endswith	disallow the String.prototype.endsWith method.
es-x/no-string-prototype-includes	disallow the String.prototype.includes method.
es-x/no-string-prototype-normalize	disallow the String.prototype.normalize method.
es-x/no-string-prototype-repeat	disallow the String.prototype.repeat method.
es-x/no-string-prototype-startswith	disallow the String.prototype.startsWith method.
es-x/no-string-raw	disallow the String.raw method.
es-x/no-subclassing-builtins	disallow the subclassing of the built-in classes.
es-x/no-symbol	disallow the Symbol class.
es-x/no-template-literals	disallow template literals.	🔧
es-x/no-typed-arrays	disallow ES2015 typed arrays.
es-x/no-unicode-codepoint-escapes	disallow Unicode code point escape sequences.	🔧
es-x/no-weak-map	disallow the WeakMap class.
es-x/no-weak-set	disallow the WeakSet class.

ES5

There are multiple configs that enable all rules in this category: no-new-in-es5 and restrict-to-es3

Rule ID	Description
es-x/no-accessor-properties	disallow accessor properties.
es-x/no-array-isarray	disallow the Array.isArray method.
es-x/no-array-prototype-every	disallow the Array.prototype.every method.
es-x/no-array-prototype-filter	disallow the Array.prototype.filter method.
es-x/no-array-prototype-foreach	disallow the Array.prototype.forEach method.
es-x/no-array-prototype-indexof	disallow the Array.prototype.indexOf method.
es-x/no-array-prototype-lastindexof	disallow the Array.prototype.lastIndexOf method.
es-x/no-array-prototype-map	disallow the Array.prototype.map method.
es-x/no-array-prototype-reduce	disallow the Array.prototype.reduce method.
es-x/no-array-prototype-reduceright	disallow the Array.prototype.reduceRight method.
es-x/no-array-prototype-some	disallow the Array.prototype.some method.
es-x/no-date-now	disallow the Date.now method.
es-x/no-function-prototype-bind	disallow the Function.prototype.bind method.
es-x/no-json	disallow the JSON class.
es-x/no-keyword-properties	disallow reserved words as property names.
es-x/no-object-create	disallow the Object.create method.
es-x/no-object-defineproperties	disallow the Object.defineProperties method.
es-x/no-object-defineproperty	disallow the Object.defineProperty method.
es-x/no-object-freeze	disallow the Object.freeze method.
es-x/no-object-getownpropertydescriptor	disallow the Object.getOwnPropertyDescriptor method.
es-x/no-object-getownpropertynames	disallow the Object.getOwnPropertyNames method.
es-x/no-object-getprototypeof	disallow the Object.getPrototypeOf method.
es-x/no-object-isextensible	disallow the Object.isExtensible method.
es-x/no-object-isfrozen	disallow the Object.isFrozen method.
es-x/no-object-issealed	disallow the Object.isSealed method.
es-x/no-object-keys	disallow the Object.keys method.
es-x/no-object-preventextensions	disallow the Object.preventExtensions method.
es-x/no-object-seal	disallow the Object.seal method.
es-x/no-string-prototype-trim	disallow the String.prototype.trim method.
es-x/no-trailing-commas	disallow trailing commas in array/object literals.

Legacy

Rules in this category disallow the syntax contained in Annex B or Legacy.
Rules in this category are not included in any preset.

Rule ID	Description
es-x/no-date-prototype-getyear-setyear	disallow the Date.prototype.{getYear,setYear} methods.
es-x/no-date-prototype-togmtstring	disallow the Date.prototype.toGMTString method.	🔧
es-x/no-escape-unescape	disallow escape and unescape.
es-x/no-function-declarations-in-if-statement-clauses-without-block	disallow function declarations in if statement clauses without using blocks.	🔧
es-x/no-initializers-in-for-in	disallow initializers in for-in heads.
es-x/no-labelled-function-declarations	disallow labelled function declarations.
es-x/no-legacy-object-prototype-accessor-methods	disallow legacy Object.prototype accessor methods.
es-x/no-regexp-prototype-compile	disallow the RegExp.prototype.compile method.
es-x/no-shadow-catch-param	disallow identifiers from shadowing catch parameter names.
es-x/no-string-create-html-methods	disallow HTML creation methods of string instances.
es-x/no-string-prototype-substr	disallow the String.prototype.substr method.
es-x/no-string-prototype-trimleft-trimright	disallow the String.prototype.{trimLeft,trimRight} methods.	🔧