Enable auto prettyprint pref (firefox-devtools#4770)

Author: AnshulMalik

src/actions/sources.js

@@ -208,7 +208,12 @@ export function selectSource(id: string, options: SelectSourceOptions = {}) {
         await dispatch(loadSourceText(source.toJS()));
         await dispatch(setOutOfScopeLocations());
         const src = getSource(getState(), id).toJS();
-        if (shouldPrettyPrint(src) && isMinified(src.id, src.text)) {
+        const { autoPrettyPrint } = prefs;
+        if (
+          autoPrettyPrint &&
+          shouldPrettyPrint(src) &&
+          isMinified(src.id, src.text)
+        ) {
           await dispatch(togglePrettyPrint(src.id));
         }
       })()

src/utils/prefs.js

@@ -12,6 +12,7 @@ const prefsSchemaVersion = "1.0.3";
 const pref = Services.pref;
 
 if (isDevelopment()) {
+  pref("devtools.debugger.auto-pretty-print", true);
   pref("devtools.source-map.client-service.enabled", true);
   pref("devtools.debugger.pause-on-exceptions", false);
   pref("devtools.debugger.ignore-caught-exceptions", false);
@@ -39,6 +40,7 @@ if (isDevelopment()) {
 }
 
 export const prefs = new PrefsHelper("devtools", {
+  autoPrettyPrint: ["Bool", "debugger.auto-pretty-print"],
   clientSourceMapsEnabled: ["Bool", "source-map.client-service.enabled"],
   pauseOnExceptions: ["Bool", "debugger.pause-on-exceptions"],
   ignoreCaughtExceptions: ["Bool", "debugger.ignore-caught-exceptions"],