Closed Bug 1241073 Opened 8 years ago Closed 8 years ago

Print a meaningful error when using Cache::addAll with an array that contains the same file twice

Categories

(Core :: DOM: Service Workers, defect)

Product:
Core
Component:
DOM: Service Workers
Version:
46 Branch
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1241045
Tracking Flags:
Tracking Status
firefox46 --- affected

People

(Reporter: marco, Unassigned)

Details

> caches.open('cache')
> .then(cache => cache.addAll(['index.html', 'index.html']))
> .catch(e => console.log(e));

If you run this snippet of code, the following message is printed to the console:
> InvalidStateError: "An attempt was made to use an object that is not, or is no longer, usable"

Since this is a mistake that is easy to make and very difficult to catch, I think we should improve the error and maybe print a warning message even if the developer doesn't explicitly logs the error.
Status: NEW → RESOLVED
Closed: 8 years ago
Resolution: --- → DUPLICATE
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