Optimize lower

tshemsedinov · tshemsedinov · commit 9121415446dd · 2018-10-06T23:58:02.000+03:00
diff --git a/JavaScript/2-composition.js b/JavaScript/2-composition.js
@@ -8,7 +8,7 @@ const upperCapital = s => s.split(' ')
   .map(word => word.charAt(0).toUpperCase() + word.slice(1))
   .join(' ');
 
-const lower = s => (typeof s === 'string' ? s.toLowerCase() : '');
+const lower = s => s.toLowerCase();
 
 const s = 'MARCUS AURELIUS';
 console.log(s);
diff --git a/JavaScript/3-arguments.js b/JavaScript/3-arguments.js
@@ -8,7 +8,7 @@ const upperCapital = s => s.split(' ')
   .map(word => word.charAt(0).toUpperCase() + word.slice(1))
   .join(' ');
 
-const lower = s => (typeof s === 'string' ? s.toLowerCase() : '');
+const lower = s => s.toLowerCase();
 
 const s = 'MARCUS AURELIUS';
 console.log(s);
diff --git a/JavaScript/4-multiple.js b/JavaScript/4-multiple.js
@@ -10,7 +10,7 @@ const upperCapital = s => s.split(' ')
   .map(word => word.charAt(0).toUpperCase() + word.slice(1))
   .join(' ');
 
-const lower = s => (typeof s === 'string' ? s.toLowerCase() : '');
+const lower = s => s.toLowerCase();
 
 const trim = s => s.trim();
 
diff --git a/JavaScript/5-loop.js b/JavaScript/5-loop.js
@@ -16,7 +16,7 @@ const upperCapital = s => s.split(' ')
   .map(word => word.charAt(0).toUpperCase() + word.slice(1))
   .join(' ');
 
-const lower = s => (typeof s === 'string' ? s.toLowerCase() : '');
+const lower = s => s.toLowerCase();
 
 const trim = s => s.trim();
 
diff --git a/JavaScript/6-recursive.js b/JavaScript/6-recursive.js
@@ -14,7 +14,7 @@ const upperCapital = s => s.split(' ')
   .map(word => word.charAt(0).toUpperCase() + word.slice(1))
   .join(' ');
 
-const lower = s => (typeof s === 'string' ? s.toLowerCase() : '');
+const lower = s => s.toLowerCase();
 
 const trim = s => s.trim();
 
