Having some difficulty determining if the property value of an object is undefined when accessed dynamically with bracket notation. Here's a snippet of my code:
function toBritishDate(date: Date | string): string {
console.log(date)
return "foo"
}
function myFunc() {
const project: { start_date?: string; end_date?: string } = {
start_date: '2023-09-13',
end_date: '2023-09-29',
};
const array: ("start_date" | "end_date")[] = ['start_date', 'end_date']
array.forEach((element) => {
if (project[element] !== undefined) {
console.log(toBritishDate(project[element]))
}
});
}
Feel free to check out the playground link.
Error encountered when calling toBritishDate on match.project[element]:
Argument of type 'string | undefined' is not assignable to parameter of type 'string | Date'. Type 'undefined' is not assignable to type 'string | Date'. (tsserver 2345)
It appears that
match.project[element] !== undefined