additional_hof/index.js

A package that adds additional HOF to array

const addHOF = () => {
  // ! 1
  Array.prototype.addAllElements = function () {
    return this.reduce((acc, curr) => acc + curr, 0);
  };
  // ! 2
  Array.prototype.multiplyAllElements = function () {
    return this.reduce((acc, curr) => acc * curr, 1);
  };
  // ! 3
  Array.prototype.calculate = function () {
    return this.map((exp) => eval(String(exp)));
  };
  // ! 4
  Array.prototype.logAll = function (el, i, arr) {
    if (el && i && arr) {
      this.forEach((el, i, arr) => {
        console.log(el, i, arr);
      });
    } else if (el && i) {
      this.forEach((el, i) => {
        console.log(el, i);
      });
    } else {
      this.forEach((el) => {
        console.log(el);
      });
    }
  };
  // ! 5
  Array.prototype.joinAndCapitalize = function (seperator) {
    return this.join(seperator || "").toUpperCase();
  };
  // ! 6
  Array.prototype.joinLowerCase = function (seperator) {
    return this.join(seperator || "").toLowerCase();
  };
  // ! 7
  Array.prototype.joinSnakeCase = function () {
    return this.reduce((acc, curr) => {
      String(prev).toLocaleLowerCase() + "_" + String(curr).toLocaleLowerCase();
    }, "");
  };
  // ! 8
  Array.prototype.joinKababCase = function () {
    return this.reduce((acc, curr) => {
      String(prev).toLocaleLowerCase() + "-" + String(curr).toLocaleLowerCase();
    }, "");
  };
  // ! 9
  Array.prototype.joinCamelCase = function () {
    return this.reduce((acc, curr, i) => {
      if (i === 0) {
        return acc + String(curr).toLocaleLowerCase();
      } else {
        return acc + String(curr)[0].toUpperCase() + String(curr).slice(1);
      }
    }, "");
  };
  // ! 10
  Array.prototype.precizeValuesBy = function (num) {
    return this.map((el) => el.toFixed(num));
  };
};




export default addHOF;