Using a const value as an index in an assignment flags modification

[yphoenix]

const { foo } = formValueObject;

let bar;
let bar[foo ?? 999] = 42;

eslint(no-const-assign): Unexpected re-assignment of const variable foo

let bar = [];
bar[parseInt("42", 10)] = 99;

eslint(no-global-assign): Read-only global 'parseInt' should not be modified.

[yphoenix]

Thank you.