@visx/vendor/vendor-cjs/d3-array/src/mean.js

vendored packages for visx

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = mean;
function mean(values, valueof) {
  let count = 0;
  let sum = 0;
  if (valueof === undefined) {
    for (let value of values) {
      if (value != null && (value = +value) >= value) {
        ++count, sum += value;
      }
    }
  } else {
    let index = -1;
    for (let value of values) {
      if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) {
        ++count, sum += value;
      }
    }
  }
  if (count) return sum / count;
}