Docs: Update benchmark for minimax/minimax-m2

tests/9_stream_visualizer/outputs/minimax_minimax-m2.js

@@ -0,0 +1,55 @@
+export async function createStreamVisualizer(stream, opts = {}) {
+  const {
+    maxPoints = 1000,
+    alpha = 0.2,
+    width = 800,
+    height = 300,
+    yDomain = [-1, 1]
+  } = opts;
+
+  if (alpha <= 0 || alpha >= 1 || !Number.isFinite(alpha))
+    throw new Error('alpha must be in (0,1)');
+  if (!Array.isArray(yDomain) || yDomain.length !== 2 || !yDomain.every(Number.isFinite))
+    throw new Error('yDomain must be a [min, max] pair of numbers');
+
+  const d3 = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm');
+
+  const buf = [];
+  let prevEma = undefined;
+
+  for await (const p of stream) {
+    if (!p || !('timestamp' in p) || !('value' in p)) continue;
+    const v = Number(p.value);
+    if (!Number.isFinite(v)) continue;
+
+    if (prevEma === undefined) prevEma = v;
+    else prevEma = alpha * v + (1 - alpha) * prevEma;
+
+    buf.push({ timestamp: p.timestamp, value: v, ema: prevEma });
+    if (buf.length > maxPoints) buf.shift();
+  }
+
+  const data = buf;
+  let path = '';
+
+  if (data.length) {
+    const xs = d3.scaleLinear()
+      .domain([data[0].timestamp, data[data.length - 1].timestamp])
+      .range([0, width]);
+
+    const ys = d3.scaleLinear()
+      .domain(yDomain)
+      .range([height, 0]);
+
+    const line = d3.line()
+      .x(d => xs(d.timestamp))
+      .y(d => ys(d.ema));
+
+    path = line(data) || '';
+  }
+
+  return { data, path };
+}
+export default createStreamVisualizer;
+// Generation time: 14.769s
+// Result: PASS