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nearest 

function nearest(options: NearestOptions): number;

See https://stackoverflow.com/a/13635455

The nearest function can be used to round a number to the nearest step within a min/max range.

Example Usage

expect(nearest({ value: 1, min: 0, max: 1, steps: 1 })).toBe(1);
expect(nearest({ value: 0, min: 0, max: 100, steps: 100 })).toBe(0);

expect(nearest({ value: 28, min: 0, max: 100, steps: 10 })).toBe(30);
expect(nearest({ value: 28.7, min: 0, max: 100, steps: 10 })).toBe(30);
expect(nearest({ value: 28.3, min: 0, max: 100, steps: 100 })).toBe(28);
expect(nearest({ value: 28.7, min: 0, max: 100, steps: 100 })).toBe(29);

expect(nearest({ value: 2.75, min: 0, max: 10, steps: 10 })).toBe(3);
expect(nearest({ value: 5.12, min: 5, max: 6, steps: 10 })).toBe(5.1);
expect(nearest({ value: 0.06, min: 0, max: 1, steps: 10 })).toBe(0.1);

expect(nearest({ value: 0.12, min: 0, max: 1, steps: 4 })).toBe(0);
expect(nearest({ value: 0.13, min: 0, max: 1, steps: 4 })).toBe(0.25);
expect(nearest({ value: 0.24, min: 0, max: 1, steps: 4 })).toBe(0.25);
expect(nearest({ value: 0.28, min: 0, max: 1, steps: 4 })).toBe(0.25);
expect(nearest({ value: 0.33, min: 0, max: 1, steps: 4 })).toBe(0.25);

Parameters

export interface NearestOptions {
  min: number;
  max: number;
  steps: number;
  value: number;

  /** @defaultValue `max - min` */
  range?: number;
}

Returns

The rounded number.