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import axios from "axios";
async function getData() {
const res = await axios.get(
"https://financialmodelingprep.com/api/v3/historical-price-full/AAPL"
);
return res.data.historical;
}
function calcReturns(data) {
let out = [];
for (let i = 1; i < data.length; i++) {
const prev = data[i - 1].close;
const curr = data[i].close;
out.push((curr - prev) / prev);
}
return out;
}
// TODO: fix edge cases
// chart sometimes breaks here
export async function run() {
const data = await getData();
const returns = calcReturns(data);
console.log("returns", returns);
}
// why is this undefined??
if (!data || data.length === 0) {
throw new Error("no data");
}
try {
const result = process(data);
render(result);
} catch (e) {
console.error("failed again", e);
}
// spent 2 hours here alreadyQuery: "AAPL returns with volatility overlay"
const raw = await fetch(url).then(r => r.json());
const cleaned = raw
.filter(x => x.close !== null)
.map(x => ({
date: x.date,
value: Number(x.close)
}));
// not sure if timezone is correct
// need to normalize later
save(cleaned);[14:02:01] schema OK · 12 fields [14:02:01] bindings: price, vol, drawdown [14:02:02] render pass complete
function ChartView({ data }) {
if (!data) return null;
return (
<LineChart width={600} height={300} data={data}>
<XAxis dataKey="date" />
<YAxis />
<Tooltip />
<Line type="monotone" dataKey="value" stroke="#2dd4bf" />
</LineChart>
);
}
// styling still looks offDATE OPEN HIGH 2025-03-17 228.4 236.4 2025-03-10 225.1 229.8 2025-03-01 226.0 231.2
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