Use milliseconds in console.timeEnd (jestjs#6456)

* Use milliseconds in console.timeEnd

* Update CHANGELOG

Author: HiDeoo

CHANGELOG.md

@@ -11,6 +11,7 @@
 - `[jest-config]` Add missing options to the `defaults` object ([#6428](https://github.com/facebook/jest/pull/6428))
 - `[expect]` Using symbolic property names in arrays no longer causes the `toEqual` matcher to fail ([#6391](https://github.com/facebook/jest/pull/6391))
 - `[expect]` `toEqual` no longer tries to compare non-enumerable symbolic properties, to be consistent with non-symbolic properties. ([#6398](https://github.com/facebook/jest/pull/6398))
+- `[jest-util]` `console.timeEnd` now properly log elapsed time in milliseconds. ([#6456](https://github.com/facebook/jest/pull/6456))
 - `[jest-mock]` Fix `MockNativeMethods` access in react-native `jest.mock()` ([#6505](https://github.com/facebook/jest/pull/6505))
 
 ### Chore & Maintenance

packages/jest-util/src/Console.js

@@ -127,7 +127,7 @@ export default class CustomConsole extends Console {
 
     if (startTime) {
       const endTime = new Date();
-      const time = (endTime - startTime) / 1000;
+      const time = endTime - startTime;
       this._log('time', format(`${label}: ${time}ms`));
       delete this._timers[label];
     }

packages/jest-util/src/buffered_console.js

@@ -151,7 +151,7 @@ export default class BufferedConsole extends Console {
 
     if (startTime) {
       const endTime = new Date();
-      const time = (endTime - startTime) / 1000;
+      const time = endTime - startTime;
       this._log('time', format(`${label}: ${time}ms`));
       delete this._timers[label];
     }