@vtex/styleguide/lib/EXPERIMENTAL_Table/hooks/useTableProportion.js

> VTEX Styleguide React components ([Docs](https://vtex.github.io/styleguide))

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = useTableProportion;

var _react = require("react");

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function useTableProportion(_ref) {
  var columns = _ref.columns,
      ratio = _ref.ratio;
  var calculatedWidths = (0, _react.useMemo)(function () {
    return calculateWidths(columns, ratio);
  }, [columns, ratio]);
  var sizedColumns = (0, _react.useMemo)(function () {
    return columns.map(function (col, i) {
      return _extends({}, col, {
        width: calculatedWidths[i]
      });
    });
  }, [calculatedWidths, columns]);
  return (0, _react.useMemo)(function () {
    return {
      sizedColumns: sizedColumns
    };
  }, [sizedColumns]);
}

function calculateWidths(columns, ratio) {
  var slicedRatio = ratio.slice(0, columns.length);

  var sum = function sum(acc, num) {
    return acc + num;
  };

  var ratioSum = slicedRatio.reduce(sum, 0);
  var fullPortion = 100;
  var minPortion = fullPortion / ratioSum;
  return slicedRatio.map(function (value) {
    return value * minPortion + "%";
  });
}