eslint/rules/classes

Classes: Constructors, members, accessors, this and inheritance. Rules of ESLint, typescript-eslint and SonarJS (the Sonar way profile of SonarQube) on this subject, every rule listed; the TypeScript rules apply to TypeScript files only.

47 rules, 33 on. Source: lint/eslint/rules/classes.mjs.

Rule	Setting	Files	What it checks	Why
constructor-super	error	JS + TS	Require super() calls in constructors	—
getter-return	error	JS + TS	Enforce return statements in getters	—
no-class-assign	error	JS + TS	Disallow reassigning class members	—
no-constructor-return	error	JS + TS	Disallow returning value from constructor	—
no-dupe-class-members	error	JS + TS	Disallow duplicate class members	Replaced by the TS version.
no-new-native-nonconstructor	error	JS + TS	Disallow new operators with global non-constructor functions	—
no-setter-return	error	JS + TS	Disallow returning values from setters	—
no-this-before-super	error	JS + TS	Disallow this/super before calling super() in constructors	—
no-unused-private-class-members	error	JS + TS	Disallow unused private class members	Replaced by the TS version.
accessor-pairs	info	JS + TS	Enforce getter and setter pairs in objects and classes	—
class-methods-use-this	warn	JS + TS	Enforce that class methods utilize this	Warn: a method may implement an interface without using this.
consistent-this	info	JS + TS	Enforce consistent naming when capturing the current execution context	Off: no-this-alias forbids aliasing this at all.
grouped-accessor-pairs	info	JS + TS	Require grouped accessor pairs in object literals and classes	—
max-classes-per-file	warn	JS + TS	Enforce a maximum number of classes per file	Warn: a size limit: a justified exception (a data table, a state machine) may pass.
no-empty-static-block	warn	JS + TS	Disallow empty static blocks	—
no-extend-native	error	JS + TS	Disallow extending native types	—
no-invalid-this	warn	JS + TS	Disallow use of this in contexts where the value of this is undefined	Off: the core rule misreads this: parameters; the TS version is off by choice.
no-new	warn	JS + TS	Disallow new operators outside of assignments or comparisons	—
no-object-constructor	info	JS + TS	Disallow calls to the Object constructor without an argument	—
no-useless-constructor	info	JS + TS	Disallow unnecessary constructors	Replaced by the TS version.
sonarjs/no-built-in-override	off	JS + TS	Built-in objects should not be overridden	Off: not in the Sonar way profile of SonarQube.
sonarjs/new-operator-misuse	error	JS + TS	"new" should only be used with functions and classes	—
constructor-super	off	TS	Require super() calls in constructors	—
getter-return	off	TS	Enforce return statements in getters	—
no-class-assign	off	TS	Disallow reassigning class members	—
no-new-native-nonconstructor	off	TS	Disallow new operators with global non-constructor functions	—
no-setter-return	off	TS	Disallow returning values from setters	—
no-this-before-super	off	TS	Disallow this/super before calling super() in constructors	—
@typescript-eslint/class-literal-property-style	error	TS	Enforce that literals on classes are exposed in a consistent style	—
class-methods-use-this	off	TS	Enforce that class methods utilize this	Warn: a method may implement an interface without using this.
@typescript-eslint/class-methods-use-this	warn	TS	Enforce that class methods utilize this	Warn: a method may implement an interface without using this.
@typescript-eslint/explicit-member-accessibility	error	TS	Require explicit accessibility modifiers on class properties and methods	—
@typescript-eslint/member-ordering	info	TS	Require a consistent member declaration order	—
no-dupe-class-members	off	TS	Disallow duplicate class members	Replaced by the TS version.
@typescript-eslint/no-dupe-class-members	error	TS	Disallow duplicate class members	—
@typescript-eslint/no-extraneous-class	warn	TS	Disallow classes used as namespaces	—
no-invalid-this	off	TS	Disallow use of this in contexts where the value of this is undefined	Off: the core rule misreads this: parameters; the TS version is off by choice.
@typescript-eslint/no-invalid-this	off	TS	Disallow this keywords outside of classes or class-like objects	—
consistent-this	off	TS	Enforce consistent naming when capturing the current execution context	Off: no-this-alias forbids aliasing this at all.
@typescript-eslint/no-this-alias	warn	TS	Disallow aliasing this	—
no-unused-private-class-members	off	TS	Disallow unused private class members	Replaced by the TS version.
@typescript-eslint/no-unused-private-class-members	error	TS	Disallow unused private class members	—
no-useless-constructor	off	TS	Disallow unnecessary constructors	Replaced by the TS version.
@typescript-eslint/no-useless-constructor	error	TS	Disallow unnecessary constructors	—
@typescript-eslint/parameter-properties	error	TS	Require or disallow parameter properties in class constructors	—
@typescript-eslint/related-getter-setter-pairs	error	TS	Enforce that get() types should be assignable to their equivalent set() type	—
@typescript-eslint/unbound-method	error	TS	Enforce unbound methods are called with their expected scope	—