Beginner Exercism • javascript

Allergies

Challenge Overview

Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.

Source: Exercism javascript/allergies

💡 View Solution

export class Allergies {
  constructor(score) {
    this.score = score;
    this.list_items = ['eggs', 'peanuts', 'shellfish', 'strawberries', 'tomatoes', 'chocolate', 'pollen', 'cats'];
  }
  list() {
    return this.list_items.filter((item, i) => (this.score >> i) & 1);
  }
  allergicTo(item) {
    return this.list().includes(item);
  }
}