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Nathan Shively-Sanders
1ee1212952
Neither `x[0]` nor `x[(0)]` should be dynamic names. Previously, the latter was because `isDynamicName` didn't skip parentheses. Since the binder treats dynamic names in property assignments as assignment declarations, this incorrectly tried to create a binding for expressions like `x[(0)] = 1`. This caused an assert because `x[(0)]` would not take the dynamic name code path during binding (`hasDynamicName` returned false), but the normal code path for static names.