feat(api): add NPM package fetch API and related type definitions

Author: mk965

app/api/npm/npm.ts

@@ -0,0 +1,7 @@
+const NPM_API = `https://api.npmjs.org/downloads/point/last-month`
+
+export async function getNpmPackage(packageName: string) {
+  return fetch(`${NPM_API}/${packageName}`, {
+    cache: 'no-store',
+  })
+}

app/api/npm/route.ts

@@ -0,0 +1,18 @@
+import { getNpmPackage } from './npm'
+import type { NextRequest } from 'next/server'
+
+export async function GET(request: NextRequest) {
+  const params = new URL(request.url).searchParams
+  const packageName = params.get('package')
+  if (!packageName) {
+    return Response.json({ message: 'Missing package parameter' }, { status: 400 })
+  }
+  const response = await getNpmPackage(packageName)
+  if (response.status === 204 || response.status > 400) {
+    return Response.json({ message: 'Package not found' }, { status: 404 })
+  }
+
+  const data = await response.json()
+
+  return Response.json(data)
+}

types/data.ts

@@ -122,6 +122,13 @@ export type GithubRepository = {
   repositoryTopics: string[]
 }
 
+export type NpmPackage = {
+  downloads: number
+  start: string
+  end: string
+  package: string
+}
+
 export type ImdbFriends = {
   type: string
   name: string