refactor: set content type based on entry point

registry/index.ts

@@ -147,9 +147,12 @@ app.setNotFoundHandler(async (req, res) => {
     if (!minified) {
       if (validExt(path)) {
         content = Buffer.from(content, 'base64').toString('utf-8')
-      } else {
+      } else if (entryPoint.endsWith('ts')) {
         contentType = filePathToContentType('.ts')
         content = `export * from 'https://deno.re/${user}/${repo}@${tag}${entryPoint}'`
+      } else {
+        contentType = filePathToContentType('.js')
+        content = `export * from 'https://deno.re/${user}/${repo}@${tag}${entryPoint}'`
       }
     }
 

test/registry.test.js

@@ -51,10 +51,20 @@ test('specific tag', async () => {
   assert.strictEqual(actual, expected)
 })
 
-test('omit entry point', async () => {
-  const actual = await fetchStr('http://localhost:3000/esbuild/[email protected]')
+test('omit entry point', async (t) => {
+  await t.test('js', async () => {
+    const res = await fetch('http://localhost:3000/esbuild/[email protected]')
 
-  assert.strictEqual(actual, `export * from 'https://deno.re/esbuild/[email protected]/mod.js'`)
+    assert.strictEqual(await res.text(), `export * from 'https://deno.re/esbuild/[email protected]/mod.js'`)
+    assert.strictEqual(res.headers.get('content-type'), 'text/javascript; charset=utf-8')
+  })
+
+  await t.test('ts', async () => {
+    const res = await fetch('http://localhost:3000/[email protected]/crypto')
+
+    assert.strictEqual(await res.text(), `export * from 'https://deno.re/[email protected]/crypto/mod.ts'`)
+    assert.strictEqual(res.headers.get('content-type'), 'text/typescript; charset=utf-8')
+  })
 })
 
 test('type header', async () => {