getUsageOfPattern behaves inconsistently #245
Description
While writing tests, I found that getUsageOfPattern behaves strangely around unknown functions.
The following test cases pass.
{
code: `foo(/[a-zA-Z]\\w*/)`,
results: [UsageOfPattern.whole],
},
{
code: `foo({ pattern: /[a-zA-Z]\\w*/ })`,
results: [UsageOfPattern.unknown],
},
Both should have the same result: unknown. We do not know how foo is implemented. It might use the regex as is or it might return its source.