#no-sequences

#Configuration

import { defineConfig, js } from '@rslint/core';

export default defineConfig([
  js.configs.recommended,
  {
    rules: {
      'no-sequences': 'error',
    },
  },
]);

#Rule Details

This rule forbids the use of the comma operator, with the following exceptions:

• In the initialization or update portions of a for statement.
• By default, if the expression sequence is explicitly wrapped in parentheses. This exception can be removed with the "allowInParentheses": false option.

Examples of incorrect code for this rule:

foo = doSomething(), val;

0, eval("doSomething();");

do {} while (doSomething(), !!test);

for (; doSomething(), !!test; );

if (doSomething(), !!test);

switch (val = foo(), val) {}

while (val = foo(), val < 42);

with (doSomething(), val) {}

const foo = (val) => (console.log('bar'), val);

Examples of correct code for this rule:

foo = (doSomething(), val);

(0, eval)("doSomething();");

do {} while ((doSomething(), !!test));

for (i = 0, j = 10; i < j; i++, j--);

if ((doSomething(), !!test));

switch ((val = foo(), val)) {}

while ((val = foo(), val < 42));

with ((doSomething(), val)) {}

const foo = (val) => ((console.log('bar'), val));

#Options

This rule takes one optional object argument:

• allowInParentheses — when set to false, disallows expression sequences even when explicitly wrapped in parentheses. Default true.

Examples of incorrect code for this rule with { "allowInParentheses": false }:

{ "no-sequences": ["error", { "allowInParentheses": false }] }

var foo = (1, 2);

(0, eval)("doSomething();");

foo(a, (b, c), d);

#Original Documentation

• ESLint rule: no-sequences