Update serve-handler to v6.1.0 and enable etag option by default (#…

…546)

* Update `serve-handler` to v6.1.0 and enable `etag` option by default

Introduces a `--no-etag` flag to opt-out of ETags.

* Move option

* Add `--no-etag` to help output

bin/serve.js

@@ -83,6 +83,8 @@ const getHelp = () => chalk`
 
       -n, --no-clipboard                  Do not copy the local address to the clipboard
 
+      --no-etag                           Send \`Last-Modified\` header instead of \`ETag\`
+
       -S, --symlinks                      Resolve symlinks instead of showing 404 errors
 
   {bold ENDPOINTS}
@@ -327,6 +329,9 @@ const loadConfig = async (cwd, entry, args) => {
 		}
 	}
 
+	// "ETag" headers are enabled by default unless `--no-etag` is provided
+	config.etag = !args['--no-etag'];
+
 	return config;
 };
 
@@ -343,6 +348,7 @@ const loadConfig = async (cwd, entry, args) => {
 			'--config': String,
 			'--no-clipboard': Boolean,
 			'--no-compression': Boolean,
+			'--no-etag': Boolean,
 			'--symlinks': Boolean,
 			'-h': '--help',
 			'-v': '--version',

package.json

@@ -43,7 +43,7 @@
     "chalk": "2.4.1",
     "clipboardy": "1.2.3",
     "compression": "1.7.3",
-    "serve-handler": "6.0.2",
+    "serve-handler": "6.1.0",
     "update-check": "1.5.2"
   }
 }

yarn.lock

@@ -977,10 +977,10 @@ semver@^5.5.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"
   integrity sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==
 
-serve-handler@6.0.2:
-  version "6.0.2"
-  resolved "https://registry.yarnpkg.com/serve-handler/-/serve-handler-6.0.2.tgz#c5afbace1a4aa28645f26483d64725b45f285048"
-  integrity sha512-D1zgDpvx9Rgjip6rzY2QBjlZwfr/oiDSg66HipOWkEw1appHn7/mXdVRL6F8+bd1KD117Wch4+4x78OTXQVwDg==
+serve-handler@6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/serve-handler/-/serve-handler-6.1.0.tgz#f1606dc6ff8f9029a1ee042c11dfe7903a5cb92e"
+  integrity sha512-63N075Tn3PsFYcu0NVV7tb367UbiW3gnC+/50ohL4oqOhAG6bmbaWqiRcXQgbzqc0ALBjSAzg7VTfa0Qw4E3hA==
   dependencies:
     bytes "3.0.0"
     content-disposition "0.5.2"