What is the purpose of using an eslint ignore next line directive?

If you want to adhere to the strict rules of coding style and formatting, you've probably heard about ESLint. It is one of the most popular JavaScript linters used for enforcing coding conventions and providing feedback about potential code errors. If a rule is broken, then ESLint will present a warning or an error that must be fixed in order for the code to be accepted.

However, there may be moments when you need to break the code rules for a valid reason and an eslint ignore next line directive can help you do just that. An ESLint ignore next line directive allows you to opt out from coding rules temporarily and let linter ignore certain parts of a file without disabling or modifying configurations in the entire project. This directive tells ESLint to continue with its processing but ignoring specific lines once they are encountered.

For example, if your code includes long comments that may not necessarily be flagged as warnings by ESLint, you could instruct it to skip over them with an 'eslint-ignore-next-line' directive. In this case, all lines of code below this specific statement will be ignored by ESLint until another 'eslint-ignore-next-line' directive or restart comment (/*eslint enable*/) is encountered again, which informs the linter that it should resume its normal operation from that point onward.