[eslint] remove useless regex escapes

Author: ljharb

.eslintrc

@@ -11,5 +11,6 @@
             "anonymous": "always",
             "named": "never",
         }],
+        "no-useless-escape": "error",
     },
 }

lib/results.js

@@ -7,7 +7,7 @@ var inspect = require('object-inspect');
 var bind = require('function-bind');
 var has = require('has');
 var regexpTest = bind.call(Function.call, RegExp.prototype.test);
-var yamlIndicators = /\:|\-|\?/;
+var yamlIndicators = /:|-|\?/;
 var nextTick = typeof setImmediate !== 'undefined'
     ? setImmediate
     : process.nextTick

lib/test.js

@@ -269,8 +269,8 @@ Test.prototype._assert = function assert(ok, opts) {
 
                     /((?:\/|[a-zA-Z]:\\)[^:\)]+:(\d+)(?::(\d+))?)\)?/
             */
-            var re = /^(?:[^\s]*\s*\bat\s+)(?:(.*)\s+\()?((?:\/|[a-zA-Z]:\\)[^:\)]+:(\d+)(?::(\d+))?)\)?$/;
-            var lineWithTokens = err[i].replace(process.cwd(), '/\$CWD').replace(__dirname, '/\$TEST');
+            var re = /^(?:[^\s]*\s*\bat\s+)(?:(.*)\s+\()?((?:\/|[a-zA-Z]:\\)[^:)]+:(\d+)(?::(\d+))?)\)?$/;
+            var lineWithTokens = err[i].replace(process.cwd(), '/$CWD').replace(__dirname, '/$TEST');
             var m = re.exec(lineWithTokens);
 
             if (!m) {

test/common.js

@@ -37,7 +37,7 @@ var stripChangingData = function (line) {
     var withoutPackageDir = withoutTestDir.replace(path.dirname(__dirname), '$TAPE');
     var withoutPathSep = withoutPackageDir.replace(new RegExp('\\' + path.sep, 'g'), '/');
     var withoutLineNumbers = withoutPathSep.replace(/:\d+:\d+/g, ':$LINE:$COL');
-    var withoutNestedLineNumbers = withoutLineNumbers.replace(/, \<anonymous\>:\$LINE:\$COL\)$/, ')');
+    var withoutNestedLineNumbers = withoutLineNumbers.replace(/, <anonymous>:\$LINE:\$COL\)$/, ')');
     return withoutNestedLineNumbers;
 };