1524070 - Type (String, Boolean, Integer) of Value Preference is missing in about:config after landing patch from bug #1521765

Status: VERIFIED WONTFIX

(Toolkit :: Preferences, defect)

Description

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

Type of Value Preference is missing after landing patch from bug #1521765.
It's not possible anymore to distinguish Type (String, Boolean, Integer) of Value Preference

STR:

1. Open about:config
2. and see that it's not possible anymore to see which Type (String, Boolean, Integer) of Preference Value is using

Regression caused by:
bug #1521765

Comment 1

[:Paolo Amadini]

This is by design. Use Services.prefs.getPrefType(prefName) in the console or look up the default if you need this.

Comment 2

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

I opened Web Console and pasted "Services.prefs.getPrefType(dom.ipc.processCount)"
and this is what I got:

Services.prefs.getPrefType(dom.ipc.processCount)
ReferenceError: dom is not defineddebugger eval code:1:1
<anonymous> debugger eval code:1

or am I doing it wrong?

Comment 3

[:Paolo Amadini]

You need double quotes around the string value, like:

Services.prefs.getPrefType("dom.ipc.processCount")

You can look up the constant names here:

https://searchfox.org/mozilla-central/rev/662de518b1686c4769320d6b8825ce4864c4eda0/modules/libpref/nsIPrefBranch.idl#39-42