Adding new RegExp check

justsml · Oct 22, 2019 · 657af83 · 657af83
1 parent 5d6d5ed
commit 657af83
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diff --git a/lib/common.js b/lib/common.js
@@ -105,6 +105,15 @@ exports.isNumber = function (value) {
     return typeof value === 'number' && !isNaN(value);
 };
 
+exports.isRegExp = function (value) {
+
+    if (!obj) {
+        return false;
+    }
+
+    const label = Object.prototype.toString.call(value);
+    return label.indexOf('[object RegExp]') > -1;
+};
 
 exports.isResolvable = function (obj) {
 

diff --git a/test/common.js b/test/common.js
@@ -22,4 +22,15 @@ describe('Common', () => {
             expect(() => Common.assertOptions()).to.throw('Options must be of type object');
         });
     });
+
+    describe('isRegExp', () => {
+        it('detects RegExp instances', () => {
+            const isRegExp = Common.isRegExp;
+            const pattern = /test/i;
+            const pattern2 = new RegExp('test', 'i');
+            expect(isRegExp(pattern)).to.be.true;
+            expect(isRegExp(pattern2)).to.be.true;
+            expect(isRegExp('🤓')).to.be.false;
+        });
+    });
 });