I've come across this function:
function stringToArray(s: string|[]): [] {
return typeof s === 'string' ? JSON.parse(s.replace(/'/g, '"')) : s;
}This function is functioning as expected without any type warnings. But I'm curious - is [] a valid type? Is it synonymous with any[]?
That is indeed correct. The [] represents an empty tuple.
Check out this TypeScript playground for more examples.
Array and [] have distinct differences.
[] signifies an empty array, while Array represents an array of any type.
You cannot push any value to the type [] without specifying the type in square brackets like
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