feat(profane): support profane phrases and well as words

When testing a string for a profane word, or phrase, it needs to validate against the entire string instead of just each word in a string. This allows
for testing against word combinations instead of just single word checking.

Author: 10kc-awright

lib/badwords.js

@@ -25,12 +25,11 @@ var Filter = (function() {
    * @param {string} string - String to evaluate for profanity.
    */
   Filter.prototype.isProfane = function isProfane(string) {
-    return string
-      .split(/\b/)
-      .map(function(w) {
-        return w.toLowerCase().replace(this.regex, '');
+    return this.list
+      .filter(function (word) {
+        const wordExp = new RegExp(`\\b${word.replace(/(\W)/g, '\\$1')}\\b`, 'gi');
+        return !this.exclude.includes(word) && wordExp.test(string);
       }, this)
-      .filter(this.isProfaneLike, this)
       .shift() || false;
   };
 

test/isProfane.js

@@ -34,6 +34,11 @@ describe('filter', function(){
 
 		it('Should tokenize words according to regex word boundaries', function() {
 			assert(filter.isProfane("that person is an\nasshole"));
-		})
+		});
+
+		it('Should detect bad word phrases', function () {
+			filter.addWords('oh no');
+			assert(filter.isProfane("oh no! this is profane!"));
+		});
 	});
 });