Function initChart

apps/sim/lib/pptx-renderer/renderer/chart-renderer.ts:3380–3413

Actually create ECharts instance, set option, and wire up resize + dispose.

(
  container: HTMLElement,
  option: echarts.EChartsOption,
  chartInstances?: Set<echarts.ECharts>
)

/** Actually create ECharts instance, set option, and wire up resize + dispose. */
function initChart(
  container: HTMLElement,
  option: echarts.EChartsOption,
  chartInstances?: Set<echarts.ECharts>
): void {
  try {
    const chart = echarts.init(container)
    chart.setOption(option)
    chartInstances?.add(chart)

    // Handle container resize
    const ro = new ResizeObserver(() => {
      if (container.isConnected) {
        chart.resize()
      } else {
        // Container removed from DOM — dispose to prevent leaks
        ro.disconnect()
        if (!chart.isDisposed()) {
          chart.dispose()
        }
        chartInstances?.delete(chart)
      }
    })
    ro.observe(container)
  } catch (error) {
    logger.warn('Failed to initialize ECharts', { error })
    container.style.display = 'flex'
    container.style.alignItems = 'center'
    container.style.justifyContent = 'center'
    container.style.color = '#999'
    container.style.fontSize = '12px'
    container.textContent = 'Chart render error'
  }
}