Removing straggler logical NOT operators

lib/tenso.js

@@ -94,7 +94,7 @@ class Tenso {
 	}
 
 	canETag (pathname, method, header) {
-		return regex.get_only.test(method) && (header !== void 0 ? this.etags.valid({"cache-control": header}) : true) && !this.config.etags.invalid.filter(i => i.test(pathname)).length;
+		return regex.get_only.test(method) && (header !== void 0 ? this.etags.valid({"cache-control": header}) : true) && this.config.etags.invalid.filter(i => i.test(pathname)).length === 0;
 	}
 
 	clf (req, res, headers) {
@@ -152,7 +152,7 @@ class Tenso {
 
 	error (req, res, err, headers = {}) {
 		const preset = res.statusCode >= 400,
-			numeric = !isNaN(err.message),
+			numeric = isNaN(err.message) === false,
 			status = preset ? res.statusCode : numeric ? Number(err.message) : 500;
 
 		return res.send(preset ? err : new Error(http.STATUS_CODES[status]), status, headers);
@@ -329,7 +329,7 @@ class Tenso {
 	}
 
 	redirect (req, res, uri, perm = false) {
-		return this.send(req, res, "", !perm ? 302 : 301, {location: uri});
+		return this.send(req, res, "", perm === false ? 302 : 301, {location: uri});
 	}
 
 	render (req, res, arg, headers) {
@@ -405,7 +405,7 @@ class Tenso {
 	send (req, res, body = "", status = 200, headers = {"content-type": "text/plain"}) {
 		const defer = deferred(),
 			head = regex.head.test(req.method),
-			pipe = !head && typeof body.on === "function",
+			pipe = head === false && typeof body.on === "function",
 			rheaders = res.getHeaders();
 		let indent = this.config.json,
 			compression = "",
@@ -522,7 +522,7 @@ class Tenso {
 
 	serialize (req, arg, status = 200, iot = false) {
 		let format = "application/json",
-			accepts = !iot ? utility.explode(req.parsed.query.format || req.headers.accept || format, ",") : format,
+			accepts = iot === false ? utility.explode(req.parsed.query.format || req.headers.accept || format, ",") : format,
 			errz = arg instanceof Error,
 			result, serializer;