In SPO my last Application Customizer stopped working for newly created sites. They where made with SPFx 1.4.1. So i "migrated" an SPFx 1.8.1 to be and Application Customizer.
Some technicals about how I made this work in my blog Make App Customizer for 1.8.x
Also in my blog How to create a machine for 2019
git clone the repo
npm i
npm i -g gulp
gulp
This package produces the following:
- lib/* - intermediate-stage commonjs build artifacts
- dist/* - the bundled script, along with other resources
- deploy/* - all resources which should be uploaded to a CDN.
gulp clean - TODO gulp test - TODO gulp serve - TODO gulp bundle - TODO gulp package-solution - TODO
gulp build; gulp bundle --ship; gulp package-solution --ship;