lib,tools: remove unneeded escaping of /

The `/` character does not need to be escaped when occurring inside a
character class in a regular expression. Remove such instances of
escaping in the code base.

PR-URL: https://github.com/nodejs/node/pull/9591
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>

lib/url.js

@@ -44,7 +44,7 @@ const protocolPattern = /^([a-z0-9.+-]+:)/i;
 const portPattern = /:[0-9]*$/;
 
 // Special case for a simple path URL
-const simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/;
+const simplePathPattern = /^(\/\/?(?!\/)[^?\s]*)(\?[^\s]*)?$/;
 
 const hostnameMaxLen = 255;
 // protocols that can allow "unsafe" and "unwise" chars.

tools/doc/html.js

@@ -90,7 +90,7 @@ function loadGtoc(cb) {
 function toID(filename) {
   return filename
     .replace('.html', '')
-    .replace(/[^\w\-]/g, '-')
+    .replace(/[^\w-]/g, '-')
     .replace(/-+/g, '-');
 }
 
@@ -284,7 +284,7 @@ function linkJsTypeDocs(text) {
   // Handle types, for example the source Markdown might say
   // "This argument should be a {Number} or {String}"
   for (i = 0; i < parts.length; i += 2) {
-    typeMatches = parts[i].match(/\{([^\}]+)\}/g);
+    typeMatches = parts[i].match(/\{([^}]+)\}/g);
     if (typeMatches) {
       typeMatches.forEach(function(typeMatch) {
         parts[i] = parts[i].replace(typeMatch, typeParser.toLink(typeMatch));

tools/doc/json.js

@@ -31,7 +31,7 @@ function doJSON(input, filename, cb) {
     // <!-- type = module -->
     // This is for cases where the markdown semantic structure is lacking.
     if (type === 'paragraph' || type === 'html') {
-      var metaExpr = /<!--([^=]+)=([^\-]+)-->\n*/g;
+      var metaExpr = /<!--([^=]+)=([^-]+)-->\n*/g;
       text = text.replace(metaExpr, function(_0, k, v) {
         current[k.trim()] = v.trim();
         return '';
@@ -371,7 +371,7 @@ function parseListItem(item) {
     item.name = 'return';
     text = text.replace(retExpr, '');
   } else {
-    var nameExpr = /^['`"]?([^'`": \{]+)['`"]?\s*:?\s*/;
+    var nameExpr = /^['`"]?([^'`": {]+)['`"]?\s*:?\s*/;
     var name = text.match(nameExpr);
     if (name) {
       item.name = name[1];
@@ -388,7 +388,7 @@ function parseListItem(item) {
   }
 
   text = text.trim();
-  var typeExpr = /^\{([^\}]+)\}/;
+  var typeExpr = /^\{([^}]+)\}/;
   var type = text.match(typeExpr);
   if (type) {
     item.type = type[1];
@@ -551,7 +551,7 @@ var classMethExpr =
   /^class\s*method\s*:?[^.]+\.([^ .()]+)\([^)]*\)\s*?$/i;
 var methExpr =
   /^(?:method:?\s*)?(?:[^.]+\.)?([^ .()]+)\([^)]*\)\s*?$/i;
-var newExpr = /^new ([A-Z][a-zA-Z]+)\([^\)]*\)\s*?$/;
+var newExpr = /^new ([A-Z][a-zA-Z]+)\([^)]*\)\s*?$/;
 var paramExpr = /\((.*)\);?$/;
 
 function newSection(tok) {

tools/license2rtf.js

@@ -122,7 +122,7 @@ function ParagraphParser() {
 
     // Detect separator "lines" within a block. These mark a paragraph break
     // and are stripped from the output.
-    if (/^\s*[=*\-]{5,}\s*$/.test(line)) {
+    if (/^\s*[=*-]{5,}\s*$/.test(line)) {
       flushParagraph();
       return;
     }
@@ -286,7 +286,7 @@ function RtfGenerator() {
 
   function rtfEscape(string) {
     return string
-      .replace(/[\\\{\}]/g, function(m) {
+      .replace(/[\\{}]/g, function(m) {
         return '\\' + m;
       })
       .replace(/\t/g, function() {