text: import { prettyNumber } from './pretty-number';
  export default function pretty(min, max, m) {
      if (m === void 0) { m = 5; }
      if (min === max) {
          return {
              max: max,
              min: min,
              ticks: [min],
          };
      }
      var n = m < 0 ? 0 : Math.round(m);
      if (n === 0)
          return { max: max, min: min, ticks: [] };
      /*
        R pretty:
        https://svn.r-project.org/R/trunk/src/appl/pretty.c
        https://www.rdocumentation.org/packages/base/versions/3.5.2/topics/pretty
        */
      var h = 1.5; // high.u.bias
      var h5 = 0.5 + 1.5 * h; // u5.bias
      // 反正我也不会调参，跳过所有判断步骤
      var d = max - min;
      var c = d / n;
      // 当d非常小的时候触发，但似乎没什么用
      // const min_n = Math.floor(n / 3);
      // const shrink_sml = Math.pow(2, 5);
      // if (Math.log10(d) < -2) {
      //   c = (_.max([ Math.abs(max), Math.abs(min) ]) * shrink_sml) / min_n;
      // }
      var base = Math.pow(10, Math.floor(Math.log10(c)));
      var unit = base;
      if (2 * base - c < h * (c - unit)) {
          unit = 2 * base;
          if (5 * base - c < h5 * (c - unit)) {
              unit = 5 * base;
              if (10 * base - c < h * (c - unit)) {
                  unit = 10 * base;
              }
          }
      }
      var nu = Math.ceil(max / unit);
      var ns = Math.floor(min / unit);
      var hi = Math.max(nu * unit, max);
      var lo = Math.min(ns * unit, min);
      var size = Math.floor((hi - lo) / unit) + 1;
      var ticks = new Array(size);
      for (var i = 0; i < size; i++) {
          ticks[i] = prettyNumber(lo + i * unit);
      }
      return {
          min: lo,
          max: hi,
          ticks: ticks,
      };
  }
  //# sourceMappingURL=pretty.js.map