@semcore/chart/lib/cjs/utils/normalizeCurvePoints.js

Semrush Chart Component

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = normalizeCurvePoints;
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _hasNull = _interopRequireDefault(require("./hasNull"));
function replaceNullValue(targetPoint, sourcePoint) {
  var field;
  if (targetPoint.x === null || targetPoint.value && targetPoint.value[0] === 0) field = 'x';
  if (targetPoint.y === null || targetPoint.value && targetPoint.value[0] === 0) field = 'y';
  return Object.assign({}, targetPoint, field ? (0, _defineProperty2["default"])({}, field, sourcePoint[field]) : {});
}

/**
 * Normalizes the array of points for the plot.
 * Fills points without data with points from neighboring ones.
 * It is necessary to continue the dotted line in those places where there is no data on the edges.
 * @param points
 * @param dataKey
 */
function normalizeCurvePoints(points, dataKey) {
  var curvePoints = Array.from(points);
  if ((0, _hasNull["default"])(curvePoints[0], dataKey)) {
    var firstDefinedIndex = points.findIndex(function (point) {
      return !(0, _hasNull["default"])(point, dataKey);
    });
    curvePoints.forEach(function (point, index) {
      if (index < firstDefinedIndex) {
        curvePoints[index] = replaceNullValue(point, points[firstDefinedIndex]);
      }
    });
  }
  var length = curvePoints.length;
  if ((0, _hasNull["default"])(curvePoints[length - 1], dataKey)) {
    var definedIndex = curvePoints.map(function (i) {
      return i;
    }).reverse().findIndex(function (point) {
      return !(0, _hasNull["default"])(point, dataKey);
    });
    var _firstDefinedIndex = length - 1 - definedIndex;
    curvePoints.forEach(function (point, index) {
      if (index > _firstDefinedIndex) {
        curvePoints[index] = replaceNullValue(point, points[_firstDefinedIndex]);
      }
    });
  }
  return curvePoints;
}
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