No Numeric Literals

Use parseInt() with an explicit base instead of binary, octal, or hexadecimal literals because parseInt() makes the base visible at the call site.

Summary

The no-numeric-literals rule reports any numeric literal that uses a binary (0b), octal (0o), or hexadecimal (0x) prefix.

Regular decimal literals are not affected.

Why Use This Rule?

parseInt('FF', 16) makes the base explicit at the call site — no need to remember prefix conventions.
Keeps all non-decimal numbers in a consistent parseInt() form.
Pairs with the radix rule that requires the base argument in parseInt().

Examples

Configuration

Options

warning

ignoreFiles is an escape hatch for files where this rule genuinely does not apply. It is not intended for routine use.

Option	Type	Default	Description
`allowBinary`	`boolean`	`false`	Allow binary literals.
`allowHex`	`boolean`	`false`	Allow hexadecimal literals.
`allowOctal`	`boolean`	`false`	Allow octal literals.
`ignoreFiles`	`string[]`	`[]`	File patterns to skip.

Autofix

Autofix is not available for this rule. Flagged code must be updated manually.

Troubleshooting

Decimal numbers are not flagged — Only 0b, 0o, and 0x prefixed literals are banned. Regular decimals like 42 and 3.14 are fine.
parseInt without radix — Pair this rule with the built-in radix rule to ensure parseInt() always receives an explicit base argument.