// https://d3js.org/d3-scale-chromatic/ v1.5.0 Copyright 2019 Mike Bostock !function(f,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("d3-interpolate"),require("d3-color")):"function"==typeof define&&define.amd?define(["exports","d3-interpolate","d3-color"],e):e((f=f||self).d3=f.d3||{},f.d3,f.d3)}(this,function(f,e,d){"use strict";function a(f){for(var e=0|f.length/6,d=Array(e),a=0;af||1