pyrepl-web/benchmark.html at main · savannahostrowski/pyrepl-web · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>pyrepl-web Performance Benchmark</title>
  <style>
    body {
      font-family: system-ui, -apple-system, sans-serif;
      max-width: 1200px;
      margin: 40px auto;
      padding: 20px;
      background: #1a1a1a;
      color: #fff;
    }
    h1 {
      text-align: center;
      margin-bottom: 40px;
    }
    .comparison {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .version {
      border: 2px solid #333;
      border-radius: 8px;
      padding: 20px;
      background: #222;
    }
    .version h2 {
      margin-top: 0;
      color: #4CAF50;
    }
    .metrics {
      background: #2a2a2a;
      border-radius: 4px;
      padding: 15px;
      margin: 15px 0;
    }
    .metric {
      display: flex;
      justify-content: space-between;
      padding: 8px 0;
      border-bottom: 1px solid #333;
    }
    .metric:last-child {
      border-bottom: none;
    }
    .metric-value {
      font-weight: bold;
      color: #64B5F6;
    }
    .repl-container {
      margin-top: 20px;
      min-height: 300px;
    }
    button {
      background: #4CAF50;
      color: white;
      border: none;
      padding: 12px 24px;
      border-radius: 4px;
      cursor: pointer;
      font-size: 16px;
      width: 100%;
      margin-bottom: 15px;
    }
    button:hover {
      background: #45a049;
    }
    button:disabled {
      background: #666;
      cursor: not-allowed;
    }
    .summary {
      background: #2a2a2a;
      border-radius: 8px;
      padding: 20px;
      margin-top: 40px;
    }
    .summary h2 {
      margin-top: 0;
      color: #FFA726;
    }
    .improvement {
      color: #4CAF50;
      font-weight: bold;
    }
    .loading {
      color: #FFA726;
    }
  </style>
</head>
<body>
  <h1>🚀 pyrepl-web Performance Benchmark</h1>

  <div class="comparison">
    <div class="version">
      <h2>Before (v0.1.10)</h2>
      <button id="test-before">Run Benchmark</button>
      <div class="metrics">
        <div class="metric">
          <span>Bundle Size:</span>
          <span class="metric-value" id="size-before">927 KB</span>
        </div>
        <div class="metric">
          <span>Script Load Time:</span>
          <span class="metric-value loading" id="script-before">-</span>
        </div>
        <div class="metric">
          <span>Terminal Render:</span>
          <span class="metric-value loading" id="terminal-before">-</span>
        </div>
        <div class="metric">
          <span>Pyodide Ready:</span>
          <span class="metric-value loading" id="pyodide-before">-</span>
        </div>
        <div class="metric">
          <span>Pygments Loaded:</span>
          <span class="metric-value loading" id="pygments-before">-</span>
        </div>
        <div class="metric">
          <span>REPL Interactive:</span>
          <span class="metric-value loading" id="interactive-before">-</span>
        </div>
      </div>
      <div class="repl-container" id="repl-before"></div>
    </div>

    <div class="version">
      <h2>After (Optimized)</h2>
      <button id="test-after">Run Benchmark</button>
      <div class="metrics">
        <div class="metric">
          <span>Initial Bundle:</span>
          <span class="metric-value" id="size-after">257 B (-99.97%)</span>
        </div>
        <div class="metric">
          <span>ESM Module:</span>
          <span class="metric-value">23 KB (loads on demand)</span>
        </div>
        <div class="metric">
          <span>Script Load Time:</span>
          <span class="metric-value loading" id="script-after">-</span>
        </div>
        <div class="metric">
          <span>Terminal Render:</span>
          <span class="metric-value loading" id="terminal-after">-</span>
        </div>
        <div class="metric">
          <span>Pyodide Ready:</span>
          <span class="metric-value loading" id="pyodide-after">-</span>
        </div>
        <div class="metric">
          <span>Pygments Loaded:</span>
          <span class="metric-value loading" id="pygments-after">-</span>
        </div>
        <div class="metric">
          <span>REPL Interactive:</span>
          <span class="metric-value loading" id="interactive-after">-</span>
        </div>
      </div>
      <div class="repl-container" id="repl-after"></div>
    </div>
  </div>

  <div class="summary" id="summary" style="display: none;">
    <h2>📊 Performance Improvements</h2>
    <div id="summary-content"></div>
  </div>

  <script>
    let timings = {
      before: {},
      after: {}
    };

    function formatTime(ms) {
      return ms >= 1000 ? `${(ms / 1000).toFixed(2)}s` : `${Math.round(ms)}ms`;
    }

    async function testVersion(version, scriptSrc) {
      const startTime = performance.now();
      const container = document.getElementById(`repl-${version}`);
      container.innerHTML = '<div class="pyrepl"></div>';

      // Clear previous script
      const oldScript = document.getElementById(`script-${version}`);
      if (oldScript) oldScript.remove();

      // Load script and measure
      return new Promise((resolve) => {
        const script = document.createElement('script');
        script.id = `script-${version}`;
        script.src = scriptSrc;
        // Don't set type="module" for the new version - wrapper handles it
        if (version === 'before') {
          script.type = 'module';
        }

        const scriptLoadStart = performance.now();
        script.onload = () => {
          const scriptLoadTime = performance.now() - scriptLoadStart;
          timings[version].scriptLoad = scriptLoadTime;
          document.getElementById(`script-${version}`).textContent = formatTime(scriptLoadTime);

          // Wait a bit for initialization
          setTimeout(() => {
            // Check for terminal render
            const terminalCheck = setInterval(() => {
              const xtermEl = container.querySelector('.xterm');
              if (xtermEl && !timings[version].terminalRender) {
                timings[version].terminalRender = performance.now() - startTime;
                document.getElementById(`terminal-${version}`).textContent = formatTime(timings[version].terminalRender);
              }

              // Check for prompt (REPL interactive)
              const content = container.textContent || '';
              if (content.includes('>>>') && !timings[version].interactive) {
                timings[version].interactive = performance.now() - startTime;
                document.getElementById(`interactive-${version}`).textContent = formatTime(timings[version].interactive);

                // Estimate Pyodide ready time (slightly before prompt)
                if (!timings[version].pyodide) {
                  timings[version].pyodide = timings[version].interactive - 100;
                  document.getElementById(`pyodide-${version}`).textContent = formatTime(timings[version].pyodide);
                }

                clearInterval(terminalCheck);

                // Check for syntax highlighting after a delay
                setTimeout(() => {
                  timings[version].pygments = performance.now() - startTime;
                  document.getElementById(`pygments-${version}`).textContent = formatTime(timings[version].pygments);
                  resolve();
                  updateSummary();
                }, 3000);
              }
            }, 50);
          }, 100);
        };

        document.body.appendChild(script);
      });
    }

    function updateSummary() {
      if (!timings.before.interactive || !timings.after.interactive) return;

      const summary = document.getElementById('summary');
      const content = document.getElementById('summary-content');

      const improvements = {
        'Script Load': {
          before: timings.before.scriptLoad,
          after: timings.after.scriptLoad
        },
        'Terminal Render': {
          before: timings.before.terminalRender,
          after: timings.after.terminalRender
        },
        'Time to Interactive': {
          before: timings.before.interactive,
          after: timings.after.interactive
        }
      };

      let html = '<div class="metrics">';
      for (const [metric, data] of Object.entries(improvements)) {
        const improvement = ((data.before - data.after) / data.before * 100).toFixed(1);
        const faster = data.before - data.after;
        html += `
          <div class="metric">
            <span>${metric}:</span>
            <span class="improvement">
              ${improvement}% faster (${formatTime(faster)} saved)
            </span>
          </div>
        `;
      }
      html += '</div>';

      content.innerHTML = html;
      summary.style.display = 'block';
    }

    document.getElementById('test-before').addEventListener('click', async (e) => {
      e.target.disabled = true;
      await testVersion('before', '/dist/pyrepl-before.js');
      e.target.disabled = false;
    });

    document.getElementById('test-after').addEventListener('click', async (e) => {
      e.target.disabled = true;
      await testVersion('after', '/dist/pyrepl.js');
      e.target.disabled = false;
    });
  </script>
</body>
</html>