is.existy(window) test & docu

evdama · Mar 21, 2022 · 31ad329 · 31ad329
1 parent 8304976
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diff --git a/README.md b/README.md
@@ -583,6 +583,9 @@ is.existy(null)
 is.not.existy(undefined)
 => true
 
+is.existy(window)
+=> false  // true inside a web browser, false on Node.js or in case of Server-side rendering (SSR)
+
 is.all.existy(null, ['foo'])
 => false
 

diff --git a/test/test.js b/test/test.js
@@ -250,6 +250,9 @@
             it('should return false if given value is undefined', () => {
                 expect(is.existy(undefined)).to.be.false
             })
+            it('should return false for Node.js and SSR, true for web browsers', () => {
+                expect(is.existy(window)).to.be.false
+            })
             it('should return true if given value is not null or undefined', () => {
                 expect(is.existy('test')).to.be.true
             })