Do not walk resource attributes if the resource is not created #785
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Fixes #778
If
count
is zero orfor_each
is empty, Terraform will not evaluate the attributes of that resource. On the other hand, TFLint tries to evaluate the expression of any attribute regardless of the meta-arguments. As a result, TFLint sometimes reports errors that are not reported by Terraform.To avoid this problem, try to ignore resources that may not be evaluated when walking resource attributes and blocks. You may want to walk all the resources, whether they are evaluated or not, but I think we need to provide each API in that case.