jest-isa.js

Basic instanceof, but with slightly more advanced checking
git clone git://git.finwo.net/lib/jest-isa.js
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README.md (319B)

      1 # jest-isa
      2 
      3 Basic instanceof, but with slightly more advanced checking
      4 
      5 ## Usage
      6 
      7 ```js
      8 const isA = require('jest-isa');
      9 const jest = require('jest');
     10 
     11 jest.expect.extend({
     12   isA,
     13 });
     14 
     15 test('is a function range', () => expect(function(){}).isA(Function));
     16 test('is a string'        , () => expect("").isA(String));
     17 ```