How does it work and what is the name of such a construction in TS?

Question

typescript

constructor(private readonly field1, private readonly field2) {}

Answer 1

https://www.typescriptlang.org/docs/handbook/2/cla...
compiles to:

constructor(field1, field2) {
  this.field1 = field1;
  this.field2 = field2;
}

the fields will be inserted immediately after super()if present or at the beginning of the constructor if super()not