a8m.where when collection is undefined

When collection is undefined on where filter, we got:

"TypeError: Cannot read property 'filter' of undefined"

A simple check solve the problem.

if(!collection)) { return false; }

Find the a8m.where filter implementation in the source code, likely in a file like angular-filter.js or a module file. Look for the where function that applies a filter to a collection. Add a guard clause to check if the collection is undefined and return false as suggested. Test by running any existing tests for the where filter or create a simple example to verify the fix.

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