SwiftUI: custom view modifier not conforming to ViewModifier? - swiftui

Question

I am trying to create this modifier:
struct CustomTextBorder: ViewModifier {
func body(content: Content) -> some View {
return content
.font(.largeTitle)
.padding()
.overlay(
RoundedRectangle(cornerRadius: 15)
.stroke(lineWidth: 2)
)
.foregroundColor(.blue)
}
}
When I do, I get Type 'CustomTextBorder' does not conform to protocol 'ViewModifier' error.
It seems like I have to add:
typealias Body = <#type#>
However, I see modifiers being created as I originally did here without having to provide the typealias Body...
This modifier works here:
https://www.simpleswiftguide.com/how-to-make-custom-view-modifiers-in-swiftui/
Why isn't it working for me?
How can I make this modifier work? Why does it work for some and not for others? Does it depend on what the project targets? I am targeting iOS 15.

Answer 1

Without seeing your implementation, it looks like your not initializing the modifier. Be sure you're using the braces at the end CustomTextBorder(). Remember, it's still a function that needs to be called.
Text("SwiftUI Tutorials")
.modifier(CustomTextBorder())
Same if you're making an extension of View
extension View {
func customTextBorder() -> some View {
return self.modifier(CustomTextBorder())
}
}

Answer 2

Your code works fine, but why ViewModifier? you do not need ViewModifier for this simple thing, you can use extension in this way:
struct ContentView: View {
var body: some View {
Text("Hello, World!").customTextBorder
}
}
extension Text {
var customTextBorder: some View {
return self
.font(.largeTitle)
.padding()
.overlay(
RoundedRectangle(cornerRadius: 15)
.stroke(lineWidth: 2)
)
.foregroundColor(.blue)
}
}