fix(config): fix race condition in config file #381
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https://coveord.atlassian.net/browse/CDX-509
Proposed changes
One time out of ~20, I would locally reproduce the problem and get errors manipulating the configuration while executing the analytics hook. I would end up with an empty config file.
In the analytics hook, there's some logic to access the config and to write the current visitorID (through the coveo.analytics library).
By moving to a sync method to write the new config content, everything seems 👍, and I can't reproduce by running the analytics hooks multiple times (~100) in quick succession.
Testing