E0048: unexpected characters in hex literal

Hexadecimal (hex) number literals start with 0x and can only contain digits 0 through 9 and a through f (and optionally an n to signify a BigInt). It is an error to include other letters in hex number literals:

let hungry = 0xfeedme;

To fix this error, fix or remove the extra digits or letters:

let hungry = 0xfeedad00d;

Introduced in quick-lint-js version 0.2.0.

Documentation for other errors