Frontend Frameworks

Tokenizer

Tokenizer for jscpd to detect code duplication in JavaScript projects.

Status
Generally available
Last checked
Checked · Oct 11, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

A tokenizer tool designed specifically for the jscpd project to identify and report duplicated code within JavaScript source files, aiding developers in maintaining clean and efficient codebases.

The @jscpd/tokenizer stands out by providing an efficient and open-source solution for detecting duplicated code within JavaScript projects, integrating seamlessly with the jscpd project to offer comprehensive analysis.

When it fits — and when it doesn’t

A good fit for

  • JavaScript developers looking for a tool to detect and manage code duplication within their projects.

  • Teams that prioritize maintaining clean, efficient, and maintainable codebases.

Look elsewhere if

  • Projects not written in JavaScript or TypeScript as the tokenizer is specifically designed for these languages.

  • Developers who require real-time analysis of code changes; this tool operates on a more static basis.

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited language support beyond JavaScript

    Tokenizer is specifically designed for JavaScript, limiting its utility in polyglot projects.

  2. 02

    Complex setup process

    Requires manual configuration and integration with jscpd, which can be non-trivial for new users.

  3. 03

    Poor documentation

    Lack of comprehensive guides or examples makes it difficult to understand advanced configurations and usage scenarios.

  4. 04

    Performance issues with large codebases

    Scanning large JavaScript projects can be slow, leading to long analysis times which may hinder developer productivity.

What it does well

  • Efficient code duplication detection in JavaScript projects.

  • Integrates seamlessly with jscpd for comprehensive analysis.

  • Open-source and MIT licensed, allowing free use and modification.

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up Tokenizer

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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Tokenizer — tracked on AI Navigator

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HTML

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