Choreo.Dependency.Render.Mermaid (Choreo v0.9.0)

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Mermaid.js rendering for Choreo.Dependency graphs.

Produces dependency-oriented visualisation:

  • Applications — subroutine shapes
  • Libraries — cylinder shapes
  • Modules — rounded rectangles
  • Interfaces — rhombus shapes
  • Tests — rounded rectangles

Edge styles:

  • uses — solid grey
  • imports — dashed
  • calls — dotted (styled as dashed in Mermaid with small dashes)
  • inherits — solid bold
  • dev — dashed grey

Layout is top-to-bottom by default so dependencies point downward.

Summary

Functions

to_mermaid(deps, opts \\ [])

Renders a dependency graph to a Mermaid diagram string.

Functions

to_mermaid(deps, opts \\ [])

@spec to_mermaid(
  Choreo.Dependency.t(),
  keyword()
) :: String.t()

Renders a dependency graph to a Mermaid diagram string.

Options

  • :syntax — :flowchart (default) or :class_diagram (native classDiagram syntax)
  • :theme — :default, :dark, :warm, :forest, :ocean, or a Choreo.Theme struct (for :flowchart syntax)
  • :direction — :td (default), :lr, :bt, :rl
  • :highlighted_nodes — list of node IDs to highlight (for :flowchart syntax)
  • :highlighted_edges — list of edge IDs/tuples to highlight (for :flowchart syntax)

Examples

iex> deps = Choreo.Dependency.new()
iex> deps = deps
...>   |> Choreo.Dependency.add_application(:api, label: "API")
...>   |> Choreo.Dependency.add_module(:auth, label: "Auth")
...>   |> Choreo.Dependency.depends_on(:api, :auth)
iex> mermaid = Choreo.Dependency.Render.Mermaid.to_mermaid(deps)
iex> String.contains?(mermaid, "graph TD")
true
iex> String.contains?(mermaid, "API")
true
iex> String.contains?(mermaid, "Auth")
true

iex> deps = Choreo.Dependency.new() |> Choreo.Dependency.add_application(:api)
iex> mermaid = Choreo.Dependency.Render.Mermaid.to_mermaid(deps, syntax: :class_diagram)
iex> String.contains?(mermaid, "classDiagram")
true
iex> String.contains?(mermaid, "class api")
true