// https://d3js.org/d3-scale-chromatic/ v1.5.0 Copyright 2019 Mike Bostock (function(global,factory){"object"===typeof exports&&"undefined"!==typeof module?factory(exports,require("d3-interpolate"),require("d3-color")):"function"===typeof define&&define.amd?define(["exports","d3-interpolate","d3-color"],factory):(global=global||self,factory(global.d3=global.d3||{},global.d3,global.d3))})(this,function(exports,d3Interpolate,d3Color){'use strict';function colors(specifier){var n=0|specifier.length/6,colors=Array(n),i=0;while(it||1