Mastering JavaScript Functional Programming

Questions

1.1. Classes as first-class objects: We saw that functions are first class objects, but did you know classes also are? (Though, of course, speaking of classes as objects does sound weird...) Study this example and see what makes it tick! Be careful: there's some purposefully weird code in it:

      const makeSaluteClass = term =>          class {              constructor(x) {                 this.x = x;              }                      salute(y) {                 console.log(`${this.x} says "${term}" to ${y}`);               }          };      const Spanish = makeSaluteClass("HOLA");      new Spanish("ALFA").salute("BETA");      // ALFA says "HOLA" to BETA      new (makeSaluteClass("HELLO"))("GAMMA").salute("DELTA");      // GAMMA says "HELLO" to DELTA      const fullSalute = (c, x, y) => new c(x).salute(y);      const French = makeSaluteClass("BON JOUR"); fullSalute(French, ...