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ts-diagnostics-charts

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Starter template with client-side React & Hono server
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index.ts
README.md

TypeScript Diagnostics Charts

A small dashboard comparing tsc --diagnostics output across three checkpoints:

  1. Before optimization
  2. After optimization
  3. After removing octokit

Each metric is grouped (timing, memory, type-system work, source size, caches) and rendered as a horizontal grouped bar chart. Headline cards at the top show the before → after-octokit percent change for the marquee metrics.

Architecture

Rendering mermaid diagram...

File structure

index.ts                       ← Hono backend (serves frontend)
frontend/
  index.html                   ← HTML shell (Twind + React)
  index.tsx                    ← React entrypoint
  data.ts                      ← the diagnostics numbers + metric groups
  components/
    App.tsx                    ← layout, header, legend
    Headline.tsx               ← top summary cards with % deltas
    GroupSection.tsx           ← one card per metric group
    BarChart.tsx               ← horizontal grouped bar chart per metric
    format.ts                  ← value / percent formatting helpers

Editing the data

All numbers live in frontend/data.ts. Each metric is one m(...) call with before, after, and afterOctokit values plus an optional unit ("s" for seconds, "K" for kilobytes) and a lowerIsBetter flag that drives the red/green delta coloring.