src/tokenizer.ts

import {get_encoding} from '@dqbd/tiktoken'

const tokenizer = get_encoding('cl100k_base')

export function encode(input: string): Uint32Array {
  return tokenizer.encode(input)
}

export function getTokenCount(input: string): number {
  input = input.replace(/<\|endoftext\|>/g, '')
  return encode(input).length
}