7 files changed, 15 insertions, 17 deletions
diff --git a/http/cookie.ts b/http/cookie.ts
index 843f626f1..4d2704da1 100644
--- a/http/cookie.ts
+++ b/http/cookie.ts
@@ -59,7 +59,7 @@ function toString(cookie: Cookie): string {
     out.push(`Path=${cookie.path}`);
   }
   if (cookie.expires) {
-    let dateString = toIMF(cookie.expires);
+    const dateString = toIMF(cookie.expires);
     out.push(`Expires=${dateString}`);
   }
   if (cookie.unparsed) {
diff --git a/http/cookie_test.ts b/http/cookie_test.ts
index 05ed324d2..da9110291 100644
--- a/http/cookie_test.ts
+++ b/http/cookie_test.ts
@@ -7,7 +7,7 @@ import { test } from "../testing/mod.ts";
 test({
   name: "[HTTP] Cookie parser",
   fn(): void {
-    let req = new ServerRequest();
+    const req = new ServerRequest();
     req.headers = new Headers();
     assertEquals(getCookies(req), {});
     req.headers = new Headers();
@@ -35,7 +35,7 @@ test({
 test({
   name: "[HTTP] Cookie Delete",
   fn(): void {
-    let res: Response = {};
+    const res: Response = {};
     delCookie(res, "deno");
     assertEquals(
       res.headers!.get("Set-Cookie"),
@@ -47,7 +47,7 @@ test({
 test({
   name: "[HTTP] Cookie Set",
   fn(): void {
-    let res: Response = {};
+    const res: Response = {};
 
     res.headers = new Headers();
     setCookie(res, { name: "Space", value: "Cat" });
diff --git a/http/file_server.ts b/http/file_server.ts
index dfcd40cdd..77d0cf748 100755
--- a/http/file_server.ts
+++ b/http/file_server.ts
@@ -150,7 +150,7 @@ async function serveDir(
   const fileInfos = await readDir(dirPath);
   for (const fileInfo of fileInfos) {
     const filePath = posix.join(dirPath, fileInfo.name);
-    let fileUrl = posix.join(dirUrl, fileInfo.name);
+    const fileUrl = posix.join(dirUrl, fileInfo.name);
     if (fileInfo.name === "index.html" && fileInfo.isFile()) {
       // in case index.html as dir...
       return await serveFile(req, filePath);
diff --git a/http/racing_server_test.ts b/http/racing_server_test.ts
index a6534861e..b66986247 100644
--- a/http/racing_server_test.ts
+++ b/http/racing_server_test.ts
@@ -21,7 +21,7 @@ function killServer(): void {
   server.stdout!.close();
 }
 
-let input = `GET / HTTP/1.1
+const input = `GET / HTTP/1.1
 
 GET / HTTP/1.1
 
@@ -31,7 +31,7 @@ GET / HTTP/1.1
 
 `;
 const HUGE_BODY_SIZE = 1024 * 1024;
-let output = `HTTP/1.1 200 OK
+const output = `HTTP/1.1 200 OK
 content-length: 8
 
 Hello 1
diff --git a/http/server.ts b/http/server.ts
index d9bba525a..f1ced0577 100644
--- a/http/server.ts
+++ b/http/server.ts
@@ -139,7 +139,7 @@ export class ServerRequest {
           let line = await tp.readLine();
           if (line === Deno.EOF) throw new UnexpectedEOFError();
           // TODO: handle chunk extension
-          let [chunkSizeString] = line.split(";");
+          const [chunkSizeString] = line.split(";");
           let chunkSize = parseInt(chunkSizeString, 16);
           if (Number.isNaN(chunkSize) || chunkSize < 0) {
             throw new Error("Invalid chunk size");
@@ -157,7 +157,7 @@ export class ServerRequest {
           }
           const entityHeaders = await tp.readMIMEHeader();
           if (entityHeaders !== Deno.EOF) {
-            for (let [k, v] of entityHeaders) {
+            for (const [k, v] of entityHeaders) {
               this.headers.set(k, v);
             }
           }
@@ -242,8 +242,6 @@ export function parseHTTPVersion(vers: string): [number, number] {
     default: {
       const Big = 1000000; // arbitrary upper bound
       const digitReg = /^\d+$/; // test if string is only digit
-      let major: number;
-      let minor: number;
 
       if (!vers.startsWith("HTTP/")) {
         break;
@@ -254,8 +252,8 @@ export function parseHTTPVersion(vers: string): [number, number] {
         break;
       }
 
-      let majorStr = vers.substring(vers.indexOf("/") + 1, dot);
-      major = parseInt(majorStr);
+      const majorStr = vers.substring(vers.indexOf("/") + 1, dot);
+      const major = parseInt(majorStr);
       if (
         !digitReg.test(majorStr) ||
         isNaN(major) ||
@@ -265,8 +263,8 @@ export function parseHTTPVersion(vers: string): [number, number] {
         break;
       }
 
-      let minorStr = vers.substring(dot + 1);
-      minor = parseInt(minorStr);
+      const minorStr = vers.substring(dot + 1);
+      const minor = parseInt(minorStr);
       if (
         !digitReg.test(minorStr) ||
         isNaN(minor) ||
diff --git a/http/server_test.ts b/http/server_test.ts
index 314e5232e..a49301790 100644
--- a/http/server_test.ts
+++ b/http/server_test.ts
@@ -349,7 +349,7 @@ const mockConn = {
 };
 
 test(async function readRequestError(): Promise<void> {
-  let input = `GET / HTTP/1.1
+  const input = `GET / HTTP/1.1
 malformedHeader
 `;
   const reader = new BufReader(new StringReader(input));
diff --git a/http/testdata/simple_server.ts b/http/testdata/simple_server.ts
index 4f8b0e801..67b957ad5 100644
--- a/http/testdata/simple_server.ts
+++ b/http/testdata/simple_server.ts
@@ -5,7 +5,7 @@ import { serve } from "../server.ts";
 window.onload = async function main() {
   const addr = "0.0.0.0:4502";
   console.log(`Simple server listening on ${addr}`);
-  for await (let req of serve(addr)) {
+  for await (const req of serve(addr)) {
     req.respond({});
   }
 }