Run Time Error on Build

[cnhnet]

Resources:
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Stencil version: (run npm list @stencil/core from a terminal/cmd prompt and paste output below):

`-- @stencil/core@0.7.26

I'm submitting a ... (check one with "x")
[ X] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or https://stencil-worldwide.slack.com

Current behavior:
Receive the following runtime error on build:

[ ERROR ] Runtime error detected while rendering: ion-app
e.matchMedia is not a function TypeError: e.matchMedia is not a function
at i (evalmachine.:2:2586) at e.render
(evalmachine.:2:3045) at render
(c:\Users\DT911\Documents\IONIC
PROJECTS\my-pwa_alpha3\node_modules@stencil\core\dist\compiler\index.js:10892:63)
at renderUpdate (c:\Users\DT911\Documents\IONIC
PROJECTS\my-pwa_alpha3\node_modules@stencil\core\dist\compiler\index.js:11096:5)
at update (c:\Users\DT911\Documents\IONIC
PROJECTS\my-pwa_alpha3\node_modules@stencil\core\dist\compiler\index.js:11089:13)
at plt.queue.tick (c:\Users\DT911\Documents\IONIC
PROJECTS\my-pwa_alpha3\node_modules@stencil\core\dist\compiler\index.js:11015:34)
at flush (c:\Users\DT911\Documents\IONIC
PROJECTS\my-pwa_alpha3\node_modules@stencil\core\dist\compiler\index.js:12241:33)
at _combinedTickCallback (internal/process/next_tick.js:131:7) at
process._tickCallback (internal/process/next_tick.js:180:9)

Expected behavior:
A successful build without any runtime errors.

Steps to reproduce:
Using a clean ionic/core 4.0.0-alpha.3 PWA Toolkit clone, run build.

Related code:

insert any relevant code here

Other information:

[manucorporat]

This will be fixed in the next version of ionic/core, as a workaround: remove the --prerender flag in the "build" script