Add Debug breakpoints support (#17295)

* Add Debug breakpoints support

* Add Debug breakpoints support

changelog.md

@@ -205,6 +205,8 @@ provided by the operating system.
 
 - Removed support for named procs in `sugar.=>`
 
+- Added `jscore.debugger` to [call any available debugging functionality, such as breakpoints.](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger)
+
 
 ## Language changes
 

lib/js/jscore.nim

@@ -13,6 +13,7 @@
 ## specific requirements and solely targets JavaScript, you should be using
 ## the relevant functions in the `math`, `json`, and `times` stdlib
 ## modules instead.
+import std/private/since
 
 when not defined(js):
   {.error: "This module only works on the JavaScript platform".}
@@ -104,3 +105,8 @@ proc setFullYear*(d: DateTime, year: int) {.importcpp.}
 #JSON library
 proc stringify*(l: JsonLib, s: JsRoot): cstring {.importcpp.}
 proc parse*(l: JsonLib, s: cstring): JsRoot {.importcpp.}
+
+
+since (1, 5):
+  func debugger*() {.importjs: "debugger@".}
+    ## https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger