feat: add JSON output format for diagram export - #2850
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Add .json as a supported export format that serializes the d2target.Diagram to pretty-printed JSON. This provides a structured, machine-readable representation of the rendered diagram including all shapes, connections, positions, and styling. The JSON output skips SVG rendering entirely — it marshals the already-computed diagram after layout and export, making it the fastest output format. Changes: - d2cli/export.go: Register JSON extension (.json) in supported extensions, stdout format map, and supported stdout formats - d2cli/main.go: Add JSON handling in _render() that marshals diagram via json.MarshalIndent and writes to output - d2cli/help.go: Add file.json to usage and description text - d2cli/export_test.go: Add test cases for file and stdout JSON output Usage: d2 input.d2 output.json d2 --format json input.d2 -
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context: I need to consume that d2 layout from another language/system. I'll be using the JSON format to load into neo4j, so that I can have an LLM reason against it. |
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Add .json as a supported export format that serializes the d2target.Diagram to pretty-printed JSON. This provides a structured, machine-readable representation of the rendered diagram including all shapes, connections, positions, and styling.
The JSON output skips SVG rendering entirely — it marshals the already-computed diagram after layout and export, making it the fastest output format.
Changes:
Usage:
d2 input.d2 output.json d2 --format json input.d2 -