Generic Type ↔ factory for Types, defined using Angle Bracket Notation, to annotate with Generic Type Placeholder for TSC to infer & fill in

aka Generics, Generic-Types, Generic

Generic Type Placeholder

!snippet Generic Type for array utility fn to insert before

function insertAtStart<T\>(array: T, value: T) {
  const newArray = [T, ...T]
  return newArray
}

References