eslint/prefer-numeric-literals Style

🛠️ An auto-fix is available for this rule for some violations.

What it does

Disallow parseInt() and Number.parseInt() in favor of binary, octal, and hexadecimal literals.

Why is this bad?

The parseInt() and Number.parseInt() functions can be used to turn binary, octal, and hexadecimal strings into integers. As binary, octal, and hexadecimal literals are supported in ES6, this rule encourages use of those numeric literals instead of parseInt() or Number.parseInt().

Example

parseInt("111110111", 2) === 503;
parseInt(`111110111`, 2) === 503;
parseInt("767", 8) === 503;
parseInt("1F7", 16) === 503;
Number.parseInt("111110111", 2) === 503;
Number.parseInt("767", 8) === 503;
Number.parseInt("1F7", 16) === 503;

How to use

To enable this rule in the CLI or using the config file, you can use:

CLI

oxlint --deny prefer-numeric-literals

Config (.oxlintrc.json)

{
  "rules": {
    "prefer-numeric-literals": "error"
  }
}

References

• Rule Source