function onceimport { once } from "https://dotland.deno.dev/x/rambda@9.4.1/immutable.d.ts"; once<T extends AnyFunction, C = unknown>(fn: T, context?: C): TIt returns a function, which invokes only once fn function. It returns a function, which invokes only once fn function. Type ParametersT extends AnyFunctionoptionalC = unknownParametersfn: Toptionalcontext: CReturnsT