Generic type variables

The `Range` object generic type variables

Range<Min,Max,Step>

Minextendsnumber

​A generic type variable constrained by the number, by default of the value captured from the supplied min indicates the minimum range type of a new Range instance.

range.class.ts

class Range<
  Min extends number, // <--- Declare generic type variable Min.
  Max extends number,
  Step extends number = 1
> {
  constructor(
    min: Min, // <--- Capture generic type variable Min.
    max: Max,
    value?: number,
    step: Step = 1 as Step
  ) { }
}

Range<Min,Max,Step>

Maxextendsnumber

A generic type variable constrained by the number, by default of the value captured from the supplied max indicates the maximum range type of a new Range instance.

class Range<
  Min extends number,
  Max extends number, // <--- Declare generic type variable Max.
  Step extends number = 1
> {
  constructor(
    min: Min,
    max: Max, // <--- Capture generic type variable Max.
    value?: number,
    step: Step = 1 as Step
  ) {}
}

Range<Min,Max,Step>

Stepextendsnumber= 1

A generic type variable constrained by the number, by default of the value equal to 1, optionally captured from the supplied step indicates the range step type of a new Range instance.

class Range<
  Min extends number,
  Max extends number,
  Step extends number = 1 // <--- Declare generic type variable Step.
> {
  constructor(
    min: Min,
    max: Max,
    value?: number,
    step: Step = 1 as Step // <--- Capture generic type variable Step.
  ) { }
}