@tidyjs/tidy/dist/lib/summary/sum.js

Tidy up your data with JavaScript, inspired by dplyr and the tidyverse

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var d3Array = require('d3-array');

function sum(key, options) {
  let keyFn = typeof key === "function" ? key : (d) => d[key];
  if (options == null ? void 0 : options.predicate) {
    const originalKeyFn = keyFn;
    const predicate = options.predicate;
    keyFn = (d, index, array) => predicate(d, index, array) ? originalKeyFn(d, index, array) : 0;
  }
  return (items) => d3Array.fsum(items, keyFn);
}

exports.sum = sum;
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