Rxjs 5.5 “ Property ‘map’ does not exist on type Observable…’”

I’ve just converted an Ionic app to Angular 5 which relies on rxjs 5.5+. One of the odd errors that i found and didn’t quite understand why was “Property ‘map’ does not exist on type Observable” (or any operator like take…

Fixing IOS 11 web apps (apple-mobile-web-app-capable)

Fixing App Store upload problem with NSPhotoLibraryUsageDescription and PhoneGap Build

After submitting an app to the App Store, Apple added a new requirement in iOS 10 related to any apps using the Camera, Bluetooth, Photo Library etc. Apple will email you about the…

Traversing through a Javascript Object

I’ve started working with Firebase on a project and one of the interesting quirks with storing json data in its real-time database is that objects cannot have any properties that are undefined (you get “ Error: Firebase.set failed: First argument contains…

Optimizing Javascript DateTime formatting (50x perf)

Formatting dates and times in javascript can be very expensive in terms of CPU cost. Take this simple piece of code that formats a string value like "2017-12-27T16:37:37.417Z" to 8:37 AM

Gulp.src missing all files

In a gulp script that’s been working for years:

gulp.src(["*.js", "!*.spec.js"])

I found that after installation of gulp globally on a new build server that the above line was returning no files. So had the modify it to: