Add charter extension

[aicayzer]

Description

Charter is a catalog of 48 chart and diagram types with a lens for the library you are working in: Mermaid, shadcn (Recharts) or Apache ECharts. Each type shows which libraries can draw it, a thumbnail drawn by that library, a complete example (Mermaid syntax, an ECharts option as JSON, or the shadcn block's component with every variant's install command), the docs link and a prompt snippet for asking a model for that chart.

A second command, Render Chart, draws a Mermaid diagram or an ECharts option from the selection, the clipboard or a pasted source, and returns a PNG to copy, save or open.

Two things worth knowing for review:

• Rendering runs in the user's own Chromium-based browser through puppeteer-core (Chrome, Chromium, Brave, Arc or Edge, or one chosen in preferences), the same approach as Reverso Context. No browser is downloaded. When none is installed the command explains what to install and offers Kroki for Mermaid as an explicit, opt-in network fallback.
• Assets are about 11 MB because Mermaid and ECharts are vendored (assets/vendor, refreshed by npm run vendor) so drawing works offline and nothing leaves the machine, plus 63 light-and-dark thumbnails and a world map for the ECharts map types. Every file in assets is used by the extension.

Screencast

Checklist

• I read the extension guidelines
• I read the documentation about publishing
• I ran npm run build and tested this distribution build in Raycast
• I checked that files in the assets folder are used by the extension itself
• I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Congratulations on your new Raycast extension! 🚀

We're currently experiencing a high volume of incoming requests. As a result, the initial review may take up to 15 business days.

Once the PR is approved and merged, the extension will be available on our Store.

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge.

What we checked:

• ECharts input cannot run code: No. detectSource accepts ECharts input only when JSON.parse succeeds, so statements and functions never reach the browser page.

Summary

Charter adds a Raycast catalog for 48 chart and diagram types across Mermaid, shadcn, and ECharts. It also renders Mermaid diagrams and ECharts options locally, so users can browse examples, copy them, and save PNGs without leaving Raycast.

• Browse chart types by family and library lens.
• Copy examples, docs, prompts, and shadcn install commands.
• Render sources from Raycast input, the clipboard, or a pasted form.
• Use an installed Chromium browser with an explicit Kroki fallback for Mermaid.

_{Reviews (3) · Last reviewed commit: "fix: make rendering and stored lists saf..."}

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​topojson-client@​3.1.0
	npm/​world-atlas@​2.0.2
	npm/​puppeteer-core@​25.11.0
	npm/​mermaid@​12.0.0

View full report

[aicayzer]

Note: looked into the Socket review. No issues.

The two packages with a maintenance score of 75 are topojson-client and world-atlas, both already on their latest release and both devDependencies only: scripts/vendor.mjs uses them to convert the country outlines into the GeoJSON that ships in assets/vendor/maps.js, so neither ends up in the extension bundle. The low score is age rather than a problem, since they have not needed a release since 2022.