"polyfill" deepStrictEqual on Node 0.12 and below

Author: goto-bus-stop

test/node/index.js

@@ -1,6 +1,7 @@
 var spawn = require('child_process').spawn;
 var path = require('path');
 var series = require('run-series');
+var assert = require('assert');
 
 function test(filename) {
   return function(cb) {
@@ -11,6 +12,11 @@ function test(filename) {
   };
 }
 
+// "polyfill" deepStrictEqual on Node 0.12 and below
+if (!assert.deepStrictEqual) {
+  assert.deepStrictEqual = assert.strictEqual;
+}
+
 series([
   test(require.resolve('./debug')),
   test(require.resolve('./format')),