feat(textInput): add emoji filtering by default for text inputs

src/util/handleChangeText.js

@@ -1,4 +1,12 @@
 import {isEmpty, replace} from 'lodash';
+import EMOJI_FILTER_REGEXP from '../constants';
+
+/**
+ * Clean questions's value by removing emojis like expressions.
+ * @param {String} value The new answer to be handled.
+ * @param {Boolean} allowEmojis Should emojis be allowed or not.
+ */
+const sanitize = (value, allowEmojis) => (allowEmojis ? value : replace(value, new RegExp(EMOJI_FILTER_REGEXP), ''));
 
 /**
  * Invoke question's RegExp to format the value.
@@ -12,11 +20,12 @@ const formatValue = (value, regex) => (regex ? replace(value, new RegExp(regex),
  * @param {Object} question Question's data.
  * @param {String} question.name The name of question field.
  * @param {RegExp|String} question.regex The RegExp for matching text with a pattern.
+ * @param {Boolean} question.allowEmojis Should emojis be allowed or not.
  * @param {String} value The new answer to be handled.
  * @param {Function} onChange Handle when the answer has changed.
  */
-const handleChangeText = ({name, regex}, value, onChange) => onChange({
-    [name]: !isEmpty(value) ? formatValue(value, regex) : undefined
+const handleChangeText = ({name, regex, allowEmojis = false}, value, onChange) => onChange({
+    [name]: !isEmpty(value) ? formatValue(sanitize(value, allowEmojis), regex) : undefined
 });
 
 export default handleChangeText;

test/util/handleChangeText.spec.js

@@ -43,6 +43,34 @@ describe('handleChangeText', () => {
             should(result.answer).be.undefined();
         });
     });
+
+    context('with an answer including emojis', () => {
+        it('should sanitize it by default', () => {
+            let result = '';
+            handleChangeText(
+                {
+                    name: 'answer'
+                },
+                'answer with \ud83c\udff4',
+                value => result = value
+            );
+            result.answer.should.be.String();
+            result.answer.should.be.equal('answer with ');
+        });
+        it('should not sanitize it if allowEmojis is set to true', () => {
+            let result = '';
+            handleChangeText(
+                {
+                    name: 'answer',
+                    allowEmojis: true
+                },
+                'answer with \ud83c\udff4',
+                value => result = value
+            );
+            result.answer.should.be.String();
+            result.answer.should.be.equal('answer with \ud83c\udff4');
+        });
+    });
 });