chore(test): switched to jest

.babelrc

@@ -0,0 +1,9 @@
+{
+  "presets": [
+    ["env", {
+      "targets": {
+        "node": 4
+      }
+    }]
+  ]
+}

package.json

@@ -10,8 +10,7 @@
     "precommit": "npm run lint",
     "commitmsg": "validate-commit-msg",
     "coveralls": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
-    "test": "npm run lint && istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly --report text --report html -- test",
-    "posttest": "istanbul check-coverage --statements 100 --functions 100 --branches 100 --lines 100"
+    "test": "npm run lint && jest"
   },
   "repository": {
     "type": "git",
@@ -41,15 +40,27 @@
     "http-errors": "^1.6.1"
   },
   "devDependencies": {
+    "babel-jest": "^19.0.0",
+    "babel-preset-env": "^1.3.3",
     "chai": "^3.5.0",
     "chai-as-promised": "^6.0.0",
     "coveralls": "^2.13.0",
     "eslint": "^3.19.0",
     "eslint-config-noamokman": "^5.2.0",
     "husky": "^0.13.3",
-    "istanbul": "^0.4.5",
-    "mocha": "^3.2.0",
+    "jest": "^19.0.2",
     "npm-run-all": "^4.0.2",
     "validate-commit-msg": "^2.12.1"
+  },
+  "jest": {
+    "collectCoverage": true,
+    "coverageThreshold": {
+      "global": {
+        "branches": 100,
+        "functions": 100,
+        "lines": 100,
+        "statements": 100
+      }
+    }
   }
 }

test/main.spec.js

@@ -1,12 +1,10 @@
-const chai = require('chai');
-const chaiAsPromised = require('chai-as-promised');
-const {expect} = chai;
+import chai, {expect} from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+import empty from '../lib';
 
 chai.use(chaiAsPromised);
 
 describe('http-reject-empty', () => {
-  const empty = require('../lib');
-
   describe('exports', () => {
     it('should expose a function', () => {
       expect(empty).to.be.a('function');