Deprecate JSONPredicatePattern

Author: swhitty

FlyingFox/Sources/JSONPredicatePattern.swift

@@ -33,6 +33,7 @@
 
 import Foundation
 
+@available(*, deprecated, message: "Use JSONBodyPattern")
 public struct JSONPredicatePattern: HTTPBodyPattern {
 
     #if compiler(>=6)
@@ -55,8 +56,10 @@ public struct JSONPredicatePattern: HTTPBodyPattern {
     }
 }
 
+@available(*, deprecated, message: "Use JSONBodyPattern")
 public extension HTTPBodyPattern where Self == JSONPredicatePattern {
 
+    @available(*, deprecated, message: "Use JSONBodyPattern")
     static func json(where condition: String) -> JSONPredicatePattern {
         JSONPredicatePattern(NSPredicate(format: condition))
     }

README.md

@@ -302,10 +302,13 @@ public protocol HTTPBodyPattern: Sendable {
 }
 ```
 
-Darwin platforms can pattern match a JSON body with an [`NSPredicate`](https://developer.apple.com/documentation/foundation/nspredicate):
+JSON request bodies can be matched using a [JSONPath](https://en.wikipedia.org/wiki/JSONPath) expression:
 
 ```swift
-let route = HTTPRoute("POST *", body: .json(where: "food == 'fish'"))
+let route = HTTPRoute(
+  "POST *",
+  jsonBody: { $0["$.food"] == "chips"  }
+)
 ```
 ```json
 {"side": "chips", "food": "fish"}