Update Jest version (immutable-js#1530)

leebyron · web-flow · commit b714a8b715f7 · 2018-05-17T14:38:23.000Z
Fix issue based on Jest now correct differentiation of 0 / -0
diff --git a/__tests__/hash.ts b/__tests__/hash.ts
@@ -51,7 +51,8 @@ describe('hash', () => {
 
   check.it('generates unsigned 31-bit integers', [genValue], value => {
     const hashVal = hash(value);
-    expect(hashVal % 1).toBe(0);
+    expect(Number.isInteger(hashVal)).toBe(true);
+    expect(hashVal).toBeGreaterThan(-Math.pow(2, 31));
     expect(hashVal).toBeLessThan(Math.pow(2, 31));
   });
 });
diff --git a/package.json b/package.json
@@ -82,7 +82,7 @@
     "gulp-uglify": "2.1.0",
     "gulp-util": "3.0.8",
     "jasmine-check": "0.1.5",
-    "jest": "21.2.1",
+    "jest": "22.4.3",
     "marked": "0.3.19",
     "microtime": "2.1.8",
     "mkdirp": "0.5.1",
diff --git a/yarn.lock b/yarn.lock
