20 lines
1.3 KiB
Markdown
20 lines
1.3 KiB
Markdown
# Diagram Tools
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Diagram Tools is a local, script-free editor for bounded flowchart, sequence,
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class, state, entity-relationship, mind-map and timeline sources. It provides
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line diagnostics, reusable examples, accessible outlines, pan/zoom, local
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source import/export, normalized JSON, inert SVG and local PNG export. Mermaid
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directives, styling, click handlers and external resources are never executed.
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Diagram Tools is a GPL-3.0-or-later local text/visual editor with an independent safe Mermaid-like subset for flowchart/graph, sequence, class and state diagrams. It produces deterministic SVG, a local 2× PNG, syntax diagnostics, scroll/drag pan, 25–300% zoom and an accessible textual outline.
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Supported syntax is deliberately small: node declarations/shapes and four edge
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styles; participants/messages/notes; class declarations, bounded member blocks
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and relations; labelled state nodes, start/end boundaries and transitions; ER
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attributes/relations; hierarchical mind maps; and timeline sections/events.
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Directives, clicks, styles, scripts, HTML and remote assets are rejected. Caps:
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50,000 characters, 2,000 lines, 200 nodes, 500 edges and a 20 megapixel PNG;
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large vector canvases remain scrollable instead of clipping model content.
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Run `npm ci`, `npm run check`, `npm run test:browser`, then `npm run package:release -- --force`.
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