eslint/rules/loops

Loops: for, while, iteration and labels: the right loop for the job, no mutation of what is iterated. 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.

24 rules, 14 on. Source: lint/eslint/rules/loops.mjs.

Rule	Setting	Files	What it checks	Why
for-direction	error	JS + TS	Enforce for loop update clause moving the counter in the right direction	—
no-unreachable-loop	error	JS + TS	Disallow loops with a body that allows only one iteration	—
guard-for-in	warn	JS + TS	Require for-in loops to include an if statement	—
no-continue	info	JS + TS	Disallow continue statements	—
no-extra-label	off	JS + TS	Disallow unnecessary labels	Off: labels are forbidden by no-labels.
no-iterator	error	JS + TS	Disallow the use of the __iterator__ property	—
no-label-var	off	JS + TS	Disallow labels that share a name with a variable	Off: labels are forbidden by no-labels.
no-labels	warn	JS + TS	Disallow labeled statements	—
no-loop-func	warn	JS + TS	Disallow function declarations that contain unsafe references inside loop statements	—
no-unused-labels	error	JS + TS	Disallow unused labels	—
sonarjs/too-many-break-or-continue-in-loop	off	JS + TS	Loops should not contain more than a single "break" or "continue" statement	Off: not in the Sonar way profile of SonarQube.
sonarjs/constructor-for-side-effects	off	JS + TS	Objects should not be created to be dropped immediately without being used	Off: duplicate of no-new.
sonarjs/function-inside-loop	off	JS + TS	Functions should not be defined inside loops	Off: duplicate of no-loop-func.
sonarjs/label-position	off	JS + TS	Only "while", "do", "for" and "switch" statements should be labelled	Off: duplicate of no-labels.
sonarjs/no-labels	off	JS + TS	Labels should not be used	Off: duplicate of no-labels.
sonarjs/for-in	off	JS + TS	"for...in" loops should filter properties before acting on them	Off: not in the Sonar way profile of SonarQube.
sonarjs/for-loop-increment-sign	error	JS + TS	A "for" loop update clause should move the counter in the right direction	—
sonarjs/misplaced-loop-counter	warn	JS + TS	"for" loop increment clauses should modify the loops' counters	—
sonarjs/no-for-in-iterable	off	JS + TS	"for in" should not be used with iterables	Off: not in the Sonar way profile of SonarQube.
sonarjs/prefer-while	error	JS + TS	A "while" loop should be used instead of a "for" loop	—
sonarjs/updated-loop-counter	warn	JS + TS	Loop counters should not be assigned within the loop body	—
@typescript-eslint/no-for-in-array	error	TS	Disallow iterating over an array with a for-in loop	—
@typescript-eslint/no-loop-func	off	TS	Disallow function declarations that contain unsafe references inside loop statements	Deprecated: the core rule supports TypeScript.
@typescript-eslint/prefer-for-of	info	TS	Enforce the use of for-of loop over the standard for loop where possible	—