Get Indian mutual fund NAV in JavaScript

export EJI_KEY=your-key-here
node nav.mjs

// Node 18+ (built-in fetch). Run: EJI_KEY=your-key node nav.mjs
const BASE = process.env.EJI_BASE ?? "https://fin.ejiapi.com";
const headers = { "x-api-key": process.env.EJI_KEY ?? "YOUR_KEY" };

async function get(path) {
  const res = await fetch(BASE + path, { headers });
  const body = await res.json();
  if (!res.ok) throw new Error(`${res.status} ${body.detail ?? body.message}`);
  return body.data; // every success response wraps the result in `data`
}

// 1. Search by name, then use the scheme code
const found = await get("/api/mf/search?query=parag%20parikh%20flexi&limit=3");
console.log(found.map((s) => `${s.schemeCode} ${s.schemeName} (${s.planName}, ${s.optionName})`));

// 2. Latest NAV
const fund = await get("/api/mf/scheme-code/122639");
console.log(fund.schemeName, fund.latestNav, fund.latestNavDate);

// 3. NAV history for a date range
const hist = await get("/api/mf/nav-history/scheme-code/122639?start=2026-10-01&end=2026-10-10");
for (const { date, nav } of hist) console.log(date, nav);

// 4. Errors: an unknown code throws with the API's message
try {
  await get("/api/mf/scheme-code/0");
} catch (e) {
  console.log("error:", e.message);
}

[
  '122639 Parag Parikh Flexi Cap Fund (Direct Plan, Growth)',
  '153964 Parag Parikh Flexi Cap Fund (Direct Plan, Monthly IDCW Payout)',
  '122640 Parag Parikh Flexi Cap Fund (Regular Plan, Growth)'
]
Parag Parikh Flexi Cap Fund 93.9483 2026-11-06
2026-10-01 88.2569
2026-10-05 88.762
2026-10-06 88.997
2026-10-07 88.8389
2026-10-08 87.6555
2026-10-09 88.9258
error: 404 Scheme not found