shave off one more depth level from header expander (issue #22)

src/lib/devtools/defaults.cljs

@@ -183,7 +183,6 @@
  :expandable-inner-tag [:span :expandable-inner-style]
  :instance-custom-printing-tag [:span :instance-custom-printing-style]
  :default-envelope-tag [:span :default-envelope-style]
- :header-expander-tag [:span :header-expander-style]
 
  ; -- DOM tags mapping ----------------------------------------------------------------------------------------------------
 
@@ -201,7 +200,6 @@
  "border-radius: 2px;")
 
  :header-style (css "white-space: nowrap;") ; this prevents jumping of content when expanding sections due to content wrapping
- :header-expander-style (css "white-space: nowrap;") ; this prevents jumping of content when expanding sections due to content wrapping
  :expandable-style (css "white-space: nowrap;"
  "padding-left: 3px;")
  :expandable-inner-style (css "margin-left: -3px;")

src/lib/devtools/formatters/budgeting.cljs

@@ -13,8 +13,8 @@
 ; this is hardcoded in InjectedScriptSource.js in WebKit, look for maxCustomPreviewRecursionDepth
 (def initial-hierarchy-depth-budget (dec 20))
 
-; we need to reserve some depth levels for our :header-expander-tag
-(def header-expander-depth-cost 3)
+; we need to reserve some depth levels for our expander symbol
+(def header-expander-depth-cost 2)
 
 ; -- tracking over-budget values -------------------------------------------------------------------------------------------
 

src/lib/devtools/formatters/markup.cljs

@@ -59,7 +59,7 @@
  [:native-reference-tag :native-reference-background reference]))
 
 (defn <header-expander> [object]
- [:header-expander-tag (<reference> (<raw-surrogate> object :header-expander-symbol :target) reset-depth-limits)])
+ (<reference> (<raw-surrogate> object :header-expander-symbol :target) reset-depth-limits))
 
 ; -- simple markup ----------------------------------------------------------------------------------------------------------