yoshuawuyts/components

[component] tokenizer — text ↔ tokens

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#6 opened on May 1, 2026

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good first issue

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Description

Goal

Tokenize and detokenize text for popular BPE and LLM vocabularies (tiktoken/BERT/GPT/etc). Input: text; output: tokens (and reverse).

Scope/Features

  • Text in, tokens out (and reverse)
  • Configurable vocabulary (select via param)
  • Optional: return byte offsets for each token

Rough WIT shape

  • tokenize(input: string, vocab: string) -> list<u32>
  • detokenize(tokens: list<u32>, vocab: string) -> string

Candidate crates

Labels

  • good first issue

Contributor guide

Research direction
Explore the tokenizers and tiktoken rs crates; implement tokenize and detokenize functions with configurable vocabulary. Use the existing crate examples as starting points.
Tech stack
rust
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Rust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90