Docs: Update Gemini benchmark results

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.1.js

@@ -1,28 +1,20 @@
-export const createStreamVisualizer = async (src, { maxPoints: m, alpha: a, width: w, height: h, yDomain: yD }) => {
-  const data = [];
-  let ema;
+const createStreamVisualizer = async (src, { maxPoints: m, alpha: a, width: w, height: h, yDomain: yd }) => {
+  const { scaleLinear, line } = await import('https://esm.sh/d3@7');
+  const D = [];
+  let e;
 
   for await (const { timestamp: t, value: v } of src) {
-    ema = ema == null ? v : a * v + (1 - a) * ema;
-    data.push({ timestamp: t, value: v, ema });
-    if (data.length > m) data.shift();
+    e = e === undefined ? v : a * v + (1 - a) * e;
+    D.push({ timestamp: t, value: v, ema: e });
+    if (D.length > m) D.shift();
   }
 
-  if (!data.length) return { data, path: '' };
+  if (!D.length) return { data: D, path: '' };
 
-  const { scaleLinear, line } = await import('d3');
-  
-  const x = scaleLinear()
-    .domain([data[0].timestamp, data[data.length - 1].timestamp])
-    .range([0, w]);
+  const x = scaleLinear().domain([D[0].timestamp, D[D.length - 1].timestamp]).range([0, w]);
+  const y = scaleLinear().domain(yd).range([h, 0]);
+  const l = line().x(d => x(d.timestamp)).y(d => y(d.ema));
 
-  const y = scaleLinear()
-    .domain(yD)
-    .range([h, 0]);
-
-  return {
-    data,
-    path: line().x(d => x(d.timestamp)).y(d => y(d.ema))(data)
-  };
+  return { data: D, path: l(D) };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.2.js

@@ -1,14 +1,20 @@
-export const createStreamVisualizer = async (iter, { maxPoints: M, alpha: A, width: W, height: H, yDomain: Y }) => {
-  const { scaleLinear, line } = await import('https://cdn.jsdelivr.net/npm/d3/+esm')
-  let D = [], E
+const createStreamVisualizer = async (iter, { maxPoints: M, alpha: A, width: W, height: H, yDomain: Y }) => {
+  const { scaleLinear, line } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm')
+  const D = []
+  let E
+
   for await (const { timestamp: t, value: v } of iter) {
-    E = E == null ? v : A * v + (1 - A) * E
+    E = E === undefined ? v : A * v + (1 - A) * E
     D.push({ timestamp: t, value: v, ema: E })
-    D.length > M && D.shift()
+    if (D.length > M) D.shift()
   }
-  if (!D.length) return { data: [], path: "" }
-  const x = scaleLinear().domain([D[0].timestamp, D.at(-1).timestamp]).range([0, W]),
-        y = scaleLinear().domain(Y).range([H, 0])
-  return { data: D, path: line().x(d => x(d.timestamp)).y(d => y(d.ema))(D) }
+
+  if (!D.length) return { data: D, path: '' }
+
+  const x = scaleLinear().domain([D[0].timestamp, D.at(-1).timestamp]).range([0, W])
+  const y = scaleLinear().domain(Y).range([H, 0])
+  const l = line().x(d => x(d.timestamp)).y(d => y(d.ema))
+
+  return { data: D, path: l(D) }
 }
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.3.js

@@ -1,20 +1,29 @@
-export const createStreamVisualizer = async (stream, { maxPoints: M, alpha: A, width: W, height: H, yDomain: Y }) => {
+export const createStreamVisualizer = async (feed, { maxPoints, alpha, width, height, yDomain }) => {
   const { scaleLinear, line } = await import('https://esm.sh/d3@7');
   const data = [];
-  let ema;
+  let prev;
 
-  for await (const { timestamp: t, value: v } of stream) {
-    ema = ema === undefined ? v : A * v + (1 - A) * ema;
-    data.push({ timestamp: t, value: v, ema });
-    if (data.length > M) data.shift();
+  for await (const { timestamp, value } of feed) {
+    const ema = prev == null ? value : alpha * value + (1 - alpha) * prev;
+    prev = ema;
+    data.push({ timestamp, value, ema });
+    if (data.length > maxPoints) data.shift();
   }
 
-  if (!data.length) return { data, path: '' };
+  if (!data.length) return { data, path: "" };
 
-  const x = scaleLinear().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, W]);
-  const y = scaleLinear().domain(Y).range([H, 0]);
-  const gen = line().x(d => x(d.timestamp)).y(d => y(d.ema));
+  const x = scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width]);
 
-  return { data, path: gen(data) };
+  const y = scaleLinear()
+    .domain(yDomain)
+    .range([height, 0]);
+
+  const pathGen = line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema));
+
+  return { data, path: pathGen(data) };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.4.js

@@ -1,20 +1,28 @@
-export const createStreamVisualizer = async (src, { maxPoints: M, alpha: A, width: W, height: H, yDomain: YD }) => {
+const createStreamVisualizer = async (feed, { maxPoints, alpha, width, height, yDomain }) => {
   const { scaleLinear, line } = await import('https://esm.sh/d3@7');
-  const D = [];
-  let E;
+  const data = [];
+  let ema;
 
-  for await (const { timestamp: t, value: v } of src) {
-    E = E == null ? v : A * v + (1 - A) * E;
-    D.push({ timestamp: t, value: v, ema: E });
-    if (D.length > M) D.shift();
+  for await (const { timestamp, value } of feed) {
+    ema = ema == null ? value : alpha * value + (1 - alpha) * ema;
+    data.push({ timestamp, value, ema });
+    if (data.length > maxPoints) data.shift();
   }
 
-  if (!D.length) return { data: [], path: '' };
+  if (!data.length) return { data, path: '' };
 
-  const x = scaleLinear().domain([D[0].timestamp, D.at(-1).timestamp]).range([0, W]);
-  const y = scaleLinear().domain(YD).range([H, 0]);
-  const l = line().x(d => x(d.timestamp)).y(d => y(d.ema));
+  const x = scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width]);
 
-  return { data: D, path: l(D) };
+  const y = scaleLinear()
+    .domain(yDomain)
+    .range([height, 0]);
+
+  const path = line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema))(data);
+
+  return { data, path: path || '' };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.5.js

@@ -1,29 +1,27 @@
-export const createStreamVisualizer = async (iter, { maxPoints, alpha, width, height, yDomain }) => {
-  const { scaleTime, scaleLinear, line } = await import('https://esm.sh/d3@7');
-  const data = [];
-  let prev;
+export const createStreamVisualizer = async (feed, { maxPoints: m, alpha: a, width: w, height: h, yDomain: yd }) => {
+  const { scaleLinear, line } = await import('https://esm.sh/d3');
+  let data = [], ema;
 
-  for await (const { timestamp, value } of iter) {
-    const ema = prev == null ? value : alpha * value + (1 - alpha) * prev;
-    prev = ema;
-    data.push({ timestamp, value, ema });
-    if (data.length > maxPoints) data.shift();
+  for await (const { timestamp: t, value: v } of feed) {
+    ema = ema == null ? v : a * v + (1 - a) * ema;
+    data.push({ timestamp: t, value: v, ema });
+    if (data.length > m) data.shift();
   }
 
   if (!data.length) return { data, path: "" };
 
-  const x = scaleTime()
+  const x = scaleLinear()
     .domain([data[0].timestamp, data.at(-1).timestamp])
-    .range([0, width]);
+    .range([0, w]);
 
   const y = scaleLinear()
-    .domain(yDomain)
-    .range([height, 0]);
+    .domain(yd)
+    .range([h, 0]);
 
-  const d = line()
-    .x(p => x(p.timestamp))
-    .y(p => y(p.ema))(data);
+  const gen = line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema));
 
-  return { data, path: d };
+  return { data, path: gen(data) };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.6.js

@@ -1,19 +1,27 @@
-export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
-  const { scaleLinear, line } = await import('https://esm.sh/d3');
-  const data = [];
+const createStreamVisualizer = async (feed, { maxPoints: max, alpha, width, height, yDomain }) => {
+  const d3 = await import('https://esm.sh/d3');
+  let data = [], ema;
 
-  for await (const { timestamp: t, value: v } of stream) {
-    const prev = data.at(-1);
-    data.push({ timestamp: t, value: v, ema: prev ? alpha * v + (1 - alpha) * prev.ema : v });
-    if (data.length > maxPoints) data.shift();
+  for await (const { timestamp, value } of feed) {
+    ema = ema == null ? value : alpha * value + (1 - alpha) * ema;
+    data.push({ timestamp, value, ema });
+    if (data.length > max) data.shift();
   }
 
-  if (!data.length) return { data, path: '' };
+  if (!data.length) return { data, path: "" };
 
-  const x = scaleLinear().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, width]);
-  const y = scaleLinear().domain(yDomain).range([height, 0]);
-  const gen = line().x(d => x(d.timestamp)).y(d => y(d.ema));
+  const x = d3.scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width]);
 
-  return { data, path: gen(data) };
+  const y = d3.scaleLinear()
+    .domain(yDomain)
+    .range([height, 0]);
+
+  const path = d3.line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema))(data);
+
+  return { data, path };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.7.js

@@ -1,29 +1,20 @@
-const createStreamVisualizer = async (feed, { maxPoints, alpha, width, height, yDomain }) => {
-  const { scaleLinear, line } = await import('https://esm.sh/d3');
+export const createStreamVisualizer = async (src, { maxPoints: m, alpha: a, width: w, height: h, yDomain: yd }) => {
+  const { scaleLinear, line } = await import('https://esm.sh/d3@7');
   const data = [];
-  let prev;
+  let ema;
 
-  for await (const { timestamp, value } of feed) {
-    const ema = prev == null ? value : alpha * value + (1 - alpha) * prev;
-    prev = ema;
-    data.push({ timestamp, value, ema });
-    if (data.length > maxPoints) data.shift();
+  for await (const { timestamp: t, value: v } of src) {
+    ema = ema === undefined ? v : a * v + (1 - a) * ema;
+    data.push({ timestamp: t, value: v, ema });
+    if (data.length > m) data.shift();
   }
 
   if (!data.length) return { data, path: '' };
 
-  const x = scaleLinear()
-    .domain([data[0].timestamp, data.at(-1).timestamp])
-    .range([0, width]);
+  const x = scaleLinear().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, w]);
+  const y = scaleLinear().domain(yd).range([h, 0]);
+  const d = line().x(p => x(p.timestamp)).y(p => y(p.ema))(data);
 
-  const y = scaleLinear()
-    .domain(yDomain)
-    .range([height, 0]);
-
-  const generator = line()
-    .x(d => x(d.timestamp))
-    .y(d => y(d.ema));
-
-  return { data, path: generator(data) || '' };
+  return { data, path: d || '' };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.8.js

@@ -1,10 +1,10 @@
-export const createStreamVisualizer = async (iter, { maxPoints, alpha, width, height, yDomain }) => {
-  const { scaleLinear, line } = await import('https://esm.sh/d3');
+export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
+  const { scaleLinear, line } = await import('d3');
   const data = [];
   let ema;
 
-  for await (const { timestamp, value } of iter) {
-    ema = ema == null ? value : alpha * value + (1 - alpha) * ema;
+  for await (const { timestamp, value } of stream) {
+    ema = (ema ?? value) * (1 - alpha) + value * alpha;
     data.push({ timestamp, value, ema });
     if (data.length > maxPoints) data.shift();
   }
@@ -19,10 +19,10 @@ export const createStreamVisualizer = async (iter, { maxPoints, alpha, width, he
     .domain(yDomain)
     .range([height, 0]);
 
-  const path = line()
+  const pathGen = line()
     .x(d => x(d.timestamp))
-    .y(d => y(d.ema))(data);
+    .y(d => y(d.ema));
 
-  return { data, path };
+  return { data, path: pathGen(data) };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_0.9.js

@@ -1,28 +1,20 @@
-export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
-  const d3 = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm');
+export const createStreamVisualizer = async (src, { maxPoints: max, alpha: a, width: w, height: h, yDomain: yD }) => {
+  const { scaleTime, scaleLinear, line } = await import('https://esm.sh/d3');
   const data = [];
   let ema;
 
-  for await (const { timestamp, value } of stream) {
-    ema = ema === undefined ? value : alpha * value + (1 - alpha) * ema;
-    data.push({ timestamp, value, ema });
-    if (data.length > maxPoints) data.shift();
+  for await (const { timestamp: t, value: v } of src) {
+    ema = ema == null ? v : a * v + (1 - a) * ema;
+    data.push({ timestamp: t, value: v, ema });
+    if (data.length > max) data.shift();
   }
 
   if (!data.length) return { data, path: '' };
 
-  const x = d3.scaleLinear()
-    .domain([data[0].timestamp, data.at(-1).timestamp])
-    .range([0, width]);
+  const x = scaleTime().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, w]);
+  const y = scaleLinear().domain(yD).range([h, 0]);
+  const path = line().x(d => x(d.timestamp)).y(d => y(d.ema))(data);
 
-  const y = d3.scaleLinear()
-    .domain(yDomain)
-    .range([height, 0]);
-
-  const path = d3.line()
-    .x(d => x(d.timestamp))
-    .y(d => y(d.ema))(data);
-
-  return { data, path };
+  return { data, path: path || '' };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.1.js

@@ -1,28 +1,28 @@
-const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
-  const { scaleLinear, line } = await import('https://esm.sh/d3@7');
+export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
+  const { scaleLinear, line } = await import('https://esm.sh/d3');
   const data = [];
-  let ema;
 
   for await (const { timestamp, value } of stream) {
-    ema = data.length ? alpha * value + (1 - alpha) * ema : value;
+    const prev = data.at(-1);
+    const ema = prev ? alpha * value + (1 - alpha) * prev.ema : value;
     data.push({ timestamp, value, ema });
     if (data.length > maxPoints) data.shift();
   }
 
-  if (!data.length) return { data, path: '' };
+  if (!data.length) return { data, path: null };
 
   const x = scaleLinear()
     .domain([data[0].timestamp, data.at(-1).timestamp])
     .range([0, width]);
-  
+
   const y = scaleLinear()
     .domain(yDomain)
     .range([height, 0]);
 
-  const pathGen = line()
+  const generator = line()
     .x(d => x(d.timestamp))
     .y(d => y(d.ema));
 
-  return { data, path: pathGen(data) };
+  return { data, path: generator(data) };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.2.js

@@ -0,0 +1,25 @@
+export const createStreamVisualizer = async (
+  stream,
+  { maxPoints: M, alpha: A, width: W, height: H, yDomain: Y }
+) => {
+  const { scaleLinear, line } = await import("https://esm.sh/d3@7");
+  const data = [];
+  let ema;
+
+  for await (const { timestamp: t, value: v } of stream) {
+    ema = ema == null ? v : A * v + (1 - A) * ema;
+    data.push({ timestamp: t, value: v, ema });
+    if (data.length > M) data.shift();
+  }
+
+  if (!data.length) return { data, path: "" };
+
+  const x = scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, W]);
+  const y = scaleLinear().domain(Y).range([H, 0]);
+  const path = line().x(d => x(d.timestamp)).y(d => y(d.ema))(data);
+
+  return { data, path };
+};
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.3.js

@@ -0,0 +1,29 @@
+export const createStreamVisualizer = async (feed, { maxPoints, alpha, width, height, yDomain }) => {
+  const { scaleLinear, line } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm')
+  const data = []
+  let prev = null
+
+  for await (const { timestamp, value } of feed) {
+    const ema = prev === null ? value : alpha * value + (1 - alpha) * prev
+    prev = ema
+    data.push({ timestamp, value, ema })
+    if (data.length > maxPoints) data.shift()
+  }
+
+  if (!data.length) return { data, path: '' }
+
+  const x = scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width])
+
+  const y = scaleLinear()
+    .domain(yDomain)
+    .range([height, 0])
+
+  const gen = line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema))
+
+  return { data, path: gen(data) }
+}
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.4.js

@@ -0,0 +1,14 @@
+export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
+  const { scaleLinear, line } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm')
+  let data = [], ema
+  for await (const { timestamp: t, value: v } of stream) {
+    ema = ema === undefined ? v : alpha * v + (1 - alpha) * ema
+    data.push({ timestamp: t, value: v, ema })
+    if (data.length > maxPoints) data.shift()
+  }
+  if (!data.length) return { data, path: '' }
+  const x = scaleLinear().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, width])
+  const y = scaleLinear().domain(yDomain).range([height, 0])
+  return { data, path: line().x(d => x(d.timestamp)).y(d => y(d.ema))(data) }
+}
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.5.js

@@ -0,0 +1,32 @@
+export const createStreamVisualizer = async (
+  source, 
+  { maxPoints: max, alpha, width, height, yDomain }
+) => {
+  const { scaleTime, scaleLinear, line } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm');
+  
+  let data = [], prev;
+
+  for await (const { timestamp: t, value: v } of source) {
+    const ema = prev === undefined ? v : alpha * v + (1 - alpha) * prev;
+    prev = ema;
+    data.push({ timestamp: t, value: v, ema });
+    if (data.length > max) data.shift();
+  }
+
+  if (!data.length) return { data, path: "" };
+
+  const x = scaleTime()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width]);
+
+  const y = scaleLinear()
+    .domain(yDomain)
+    .range([height, 0]);
+
+  const pathGen = line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema));
+
+  return { data, path: pathGen(data) };
+};
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.6.js

@@ -0,0 +1,20 @@
+export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
+  const { scaleTime, scaleLinear, line } = await import('https://esm.sh/d3@7');
+  const data = [];
+  let ema;
+
+  for await (const { timestamp, value } of stream) {
+    ema = alpha * value + (1 - alpha) * (ema ?? value);
+    data.push({ timestamp, value, ema });
+    if (data.length > maxPoints) data.shift();
+  }
+
+  if (!data.length) return { data, path: '' };
+
+  const getX = scaleTime().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, width]);
+  const getY = scaleLinear().domain(yDomain).range([height, 0]);
+  const gen = line().x(d => getX(d.timestamp)).y(d => getY(d.ema));
+
+  return { data, path: gen(data) };
+};
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.7.js

@@ -0,0 +1,21 @@
+const createStreamVisualizer = async (feed, { maxPoints: M, alpha: A, width: W, height: H, yDomain: Y }) => {
+  const { scaleLinear: S, line: L } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm')
+  const data = []; let ema
+
+  for await (const { timestamp: t, value: v } of feed) {
+    ema = ema == null ? v : A * v + (1 - A) * ema
+    data.push({ timestamp: t, value: v, ema })
+    if (data.length > M) data.shift()
+  }
+
+  if (!data.length) return { data, path: '' }
+
+  const x = S().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, W])
+  const y = S().domain(Y).range([H, 0])
+  
+  return {
+    data,
+    path: L().x(d => x(d.timestamp)).y(d => y(d.ema))(data)
+  }
+}
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.8.js

@@ -0,0 +1,31 @@
+export const createStreamVisualizer = async (
+  stream,
+  { maxPoints, alpha, width, height, yDomain }
+) => {
+  const { scaleLinear, line } = await import('https://esm.sh/d3@7')
+  const data = []
+  let prev
+
+  for await (const { timestamp, value } of stream) {
+    const ema = prev == null ? value : alpha * value + (1 - alpha) * prev
+    prev = ema
+    if (data.push({ timestamp, value, ema }) > maxPoints) data.shift()
+  }
+
+  if (!data.length) return { data, path: '' }
+
+  const xScale = scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width])
+
+  const yScale = scaleLinear()
+    .domain(yDomain)
+    .range([height, 0])
+
+  const generator = line()
+    .x(d => xScale(d.timestamp))
+    .y(d => yScale(d.ema))
+
+  return { data, path: generator(data) }
+}
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.9.js

@@ -0,0 +1,29 @@
+export const createStreamVisualizer = async (stream, { maxPoints, alpha, width, height, yDomain }) => {
+  const data = [];
+  let prev;
+
+  for await (const { timestamp, value } of stream) {
+    prev = prev ?? value;
+    const ema = prev = alpha * value + (1 - alpha) * prev;
+    data.push({ timestamp, value, ema });
+    if (data.length > maxPoints) data.shift();
+  }
+
+  const { scaleLinear, line } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm');
+  
+  if (!data.length) return { data, path: '' };
+
+  const x = scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width]);
+
+  const y = scaleLinear()
+    .domain(yDomain)
+    .range([height, 0]);
+
+  return {
+    data,
+    path: line().x(d => x(d.timestamp)).y(d => y(d.ema))(data)
+  };
+};
+export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_1.js

@@ -1,28 +1,23 @@
-export const createStreamVisualizer = async (stream, { maxPoints: M, alpha: A, width: W, height: H, yDomain: Y }) => {
-  const { scaleLinear, line } = await import('https://esm.sh/d3');
+export const createStreamVisualizer = async (iter, { maxPoints: max, alpha, width: w, height: h, yDomain }) => {
+  const { scaleTime, scaleLinear, line } = await import('https://esm.sh/d3');
   const data = [];
-  let ema;
+  let prev;
 
-  for await (const { timestamp: t, value: v } of stream) {
-    ema = ema == null ? v : A * v + (1 - A) * ema;
+  for await (const { timestamp: t, value: v } of iter) {
+    const ema = prev == null ? v : alpha * v + (1 - alpha) * prev;
     data.push({ timestamp: t, value: v, ema });
-    if (data.length > M) data.shift();
+    if (data.length > max) data.shift();
+    prev = ema;
   }
 
-  if (!data.length) return { data, path: null };
+  if (!data.length) return { data, path: '' };
 
-  const x = scaleLinear()
-    .domain([data[0].timestamp, data.at(-1).timestamp])
-    .range([0, W]);
+  const x = scaleTime().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, w]);
+  const y = scaleLinear().domain(yDomain).range([h, 0]);
   
-  const y = scaleLinear()
-    .domain(Y)
-    .range([H, 0]);
-
-  const gen = line()
-    .x(d => x(d.timestamp))
-    .y(d => y(d.ema));
-
-  return { data, path: gen(data) };
+  return {
+    data,
+    path: line().x(d => x(d.timestamp)).y(d => y(d.ema))(data)
+  };
 };
 export default createStreamVisualizer;

tests/9_stream_visualizer/outputs_gemini/gemini-3-pro-preview TEMP_2.js

@@ -0,0 +1,22 @@
+export const createStreamVisualizer = async (stream, { maxPoints: max, alpha, width, height, yDomain }) => {
+  const { scaleLinear, line } = await import('https://esm.sh/d3');
+  let data = [], prev;
+
+  for await (const { timestamp, value } of stream) {
+    const ema = prev == null ? value : alpha * value + (1 - alpha) * prev;
+    data.push({ timestamp, value, ema });
+    if (data.length > max) data.shift();
+    prev = ema;
+  }
+
+  if (!data.length) return { data, path: "" };
+
+  const x = scaleLinear().domain([data[0].timestamp, data.at(-1).timestamp]).range([0, width]);
+  const y = scaleLinear().domain(yDomain).range([height, 0]);
+
+  return {
+    data,
+    path: line().x(d => x(d.timestamp)).y(d => y(d.ema))(data)
+  };
+};
+export default createStreamVisualizer;