Dinero.js is a JavaScript and TypeScript library for representing, calculating, comparing, converting, and formatting monetary values. Applications use it to handle currencies and amounts with immutable operations, configurable numeric precision, and support for currencies with non-decimal subdivisions. Its catalogue skills guide coding agents in using the library.
Borrowing it
Nothing to install: this file belongs to dinerojs/dinero.js. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/dinerojs/dinero.js/main/.agents/skills/tsdown/SKILL.mdgit clone --depth 1 https://github.com/dinerojs/dinero.jsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/dinerojs/dinero.js/tsdown)<a href="https://agentmods.dev/skills/dinerojs/dinero.js/tsdown"><img src="https://agentmods.dev/badge/skills/dinerojs/dinero.js/tsdown.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.02554 |
| Opus 5 | $0.00020 | $0.01277 |
| Sonnet 5 | $0.00008 | $0.00511 |
| Haiku 4.5 | $0.00004 | $0.00255 |
Grade A, and why
tsdown scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 345 lines — stays where its author put it; the contents beside it link to each section on GitHub.
tsdown - The Elegant Library Bundler
Blazing-fast bundler for TypeScript/JavaScript libraries powered by Rolldown and Oxc.
When to Use
- Building TypeScript/JavaScript libraries for npm
- Generating TypeScript declaration files (.d.ts)
- Bundling for multiple formats (ESM, CJS, IIFE, UMD)
- Optimizing bundles with tree shaking and minification
- Migrating from tsup with minimal changes
- Building React, Vue, Solid, or Svelte component libraries
Quick Start
# Install
pnpm add -D tsdown
# Basic usage
npx tsdown
# With config file
npx tsdown --config tsdown.config.ts
# Watch mode
npx tsdown --watch
# Migrate from tsup
npx tsdown-migrate
Basic Configuration
import { defineConfig } from 'tsdown'
export default defineConfig({
entry: ['./src/index.ts'],
format: ['esm', 'cjs'],
dts: true,
clean: true,
})
Core References
| Topic | Description | Reference |
|---|---|---|
| Getting Started | Installation, first bundle, CLI basics | guide-getting-started |
| Configuration File | Config file formats, multiple configs, workspace | option-config-file |
| CLI Reference | All CLI commands and options | reference-cli |
| Migrate from tsup | Migration guide and compatibility notes | guide-migrate-from-tsup |
| Plugins | Rolldown, Rollup, Unplugin support | advanced-plugins |
| Hooks | Lifecycle hooks for custom logic | advanced-hooks |
| Programmatic API | Build from Node.js scripts | advanced-programmatic |
| Rolldown Options | Pass options directly to Rolldown | advanced-rolldown-options |
| CI Environment | CI detection, 'ci-only' / 'local-only' values |
advanced-ci |
Build Options
What ships with it
31 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/advanced-ci.md 2.0 KB
- references/advanced-hooks.md 6.9 KB
- references/advanced-plugins.md 6.6 KB
- references/advanced-programmatic.md 5.9 KB
- references/advanced-rolldown-options.md 2.3 KB
- references/guide-getting-started.md 2.6 KB
- references/guide-migrate-from-tsup.md 4.2 KB
- references/option-cjs-default.md 1.9 KB
- references/option-cleaning.md 4.8 KB
- references/option-config-file.md 5.1 KB
- references/option-css.md 284 B
- references/option-dependencies.md 5.6 KB
- references/option-dts.md 4.5 KB
- references/option-entry.md 3.6 KB
- references/option-lint.md 2.9 KB
- references/option-log-level.md 1.8 KB
- references/option-minification.md 3.5 KB
- references/option-output-directory.md 4.4 KB
- references/option-output-format.md 3.4 KB
- references/option-package-exports.md 5.2 KB
- references/option-platform.md 5.1 KB
- references/option-shims.md 5.5 KB
- references/option-sourcemap.md 5.4 KB
- references/option-target.md 3.6 KB
- references/option-tree-shaking.md 5.1 KB
- references/option-unbundle.md 5.5 KB
- references/option-watch-mode.md 4.6 KB
- references/recipe-react.md 5.7 KB
- references/recipe-vue.md 6.2 KB
- references/recipe-wasm.md 2.6 KB
- references/reference-cli.md 5.7 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago First seen · 345 lines · 41 tokens per session scan A 465848426325
tsdown is a skill published in the GitHub repository dinerojs/dinero.js (6,794 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 2,554 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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