fix: Parse JSON contents from fetchLite() without gzip encoding

Author: david-rodrigues

src/Utils.test.ts

@@ -155,6 +155,16 @@ describe("utils", () => {
     expect(fetchSuccess).toBeInstanceOf(Object)
   })
 
+  it("fetchLite: access to a private NPM Registry without auth token", async () => {
+    expect.assertions(1)
+
+    const fetchSuccess = await fetchLite<{ error: string }>(
+      "https://registry.npmjs.org/@fortawesome/pro-light-svg-icons"
+    )
+
+    expect(fetchSuccess?.error).toBe("Not found")
+  })
+
   it("fetchLite: invalid URL", async () => {
     expect.assertions(1)
 

src/Utils.ts

@@ -140,6 +140,10 @@ export const fetchLite = <T>(
         // istanbul ignore next
         response.on("error", () => resolve(undefined))
         response.on("end", () => {
+          if (!response.headers["content-encoding"]) {
+            return resolve(JSON.parse(responseBuffers.toString()))
+          }
+
           return zlib.gunzip(
             Buffer.concat(responseBuffers),
             (_error, contents) => {