mjackson · February 23, 2025 04:50 · Oct 21, 2022 · Oct 21, 2022 · Oct 21, 2022
diff --git a/download-counts.mjs b/download-counts.mjs
@@ -24,7 +24,7 @@ async function getDownloads(startYear, endYear = startYear) {
 
   let totalDownloads = downloadCounts.reduce((memo, n) => memo + n);
 
-  return totalDownloads;
+  return totalDownloads.toLocaleString();
 }
 
 getDownloads(2015, 2022).then(downloads => console.log(downloads));
diff --git a/download-counts.mjs b/download-counts.mjs
@@ -1 +1,30 @@
-‎‎
+const npmApiUrl = "https://api.npmjs.org/downloads/point";
+
+async function fetchDownloadCounts(packageName, year) {
+  let range = `${year}-01-01:${year}-12-31`;
+  let response = await fetch(`${npmApiUrl}/${range}/${packageName}`);
+  return (await response.json()).downloads;
+}
+
+async function getDownloads(startYear, endYear = startYear) {
+  if (endYear < startYear) {
+    throw new Error(
+      `End year (${endYear}) must be before start year (${startYear})`
+    );
+  }
+
+  let years = [];
+  for (let year = startYear; year <= endYear; year += 1) {
+    years.push(year);
+  }
+
+  let downloadCounts = await Promise.all(
+    years.map(year => fetchDownloadCounts("react-router", year))
+  );
+
+  let totalDownloads = downloadCounts.reduce((memo, n) => memo + n);
+
+  return totalDownloads;
+}
+
+getDownloads(2015, 2022).then(downloads => console.log(downloads));
diff --git a/download-counts.mjs b/download-counts.mjs
@@ -0,0 +1 @@
+‎‎