Struct NodeKatexMathRenderer 

pub struct NodeKatexMathRenderer { /* private fields */ }

Optional KaTeX backend that shells out to a local Node.js toolchain.

This backend is intended for parity work where a real browser DOM is available. It mirrors Mermaid’s flowchart HTML-label KaTeX path closely by:

• rendering KaTeX through the local katex npm package, and
• measuring the wrapped <foreignObject> HTML through local puppeteer.

The backend is completely opt-in; if the configured Node.js environment is unavailable or the probe fails, it simply returns None and lets callers fall back to the default text path.

Implementations

impl NodeKatexMathRenderer

pub fn new(node_cwd: impl Into<PathBuf>) -> Self

pub fn with_node_command(self, node_command: impl Into<PathBuf>) -> Self

Trait Implementations

impl Debug for NodeKatexMathRenderer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl MathRenderer for NodeKatexMathRenderer

fn render_html_label( &self, text: &str, config: &MermaidConfig, ) -> Option<String>

Attempts to render math fragments within an HTML label string.

fn measure_html_label( &self, text: &str, config: &MermaidConfig, style: &TextStyle, max_width_px: Option<f64>, wrap_mode: WrapMode, ) -> Option<TextMetrics>

Optionally measures the rendered HTML label in pixels.