Function utf8ByteLength

Low-level utilities for record bodies.

AppendRecord helps construct appendable records.
meteredBytes and utf8ByteLength expose sizing utilities.

utf8ByteLength(str: string): number
Calculate the UTF-8 byte length of a string. Handles all Unicode characters including surrogate pairs correctly.
Parameters
- str: string
  The string to measure
Returns number
The byte length when encoded as UTF-8
- Defined in packages/streamstore/src/utils.ts:92