Index: node_modules/d3-axis/src/axis.js
===================================================================
--- node_modules/d3-axis/src/axis.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-axis/src/axis.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,174 @@
+import identity from "./identity.js";
+
+var top = 1,
+    right = 2,
+    bottom = 3,
+    left = 4,
+    epsilon = 1e-6;
+
+function translateX(x) {
+  return "translate(" + x + ",0)";
+}
+
+function translateY(y) {
+  return "translate(0," + y + ")";
+}
+
+function number(scale) {
+  return d => +scale(d);
+}
+
+function center(scale, offset) {
+  offset = Math.max(0, scale.bandwidth() - offset * 2) / 2;
+  if (scale.round()) offset = Math.round(offset);
+  return d => +scale(d) + offset;
+}
+
+function entering() {
+  return !this.__axis;
+}
+
+function axis(orient, scale) {
+  var tickArguments = [],
+      tickValues = null,
+      tickFormat = null,
+      tickSizeInner = 6,
+      tickSizeOuter = 6,
+      tickPadding = 3,
+      offset = typeof window !== "undefined" && window.devicePixelRatio > 1 ? 0 : 0.5,
+      k = orient === top || orient === left ? -1 : 1,
+      x = orient === left || orient === right ? "x" : "y",
+      transform = orient === top || orient === bottom ? translateX : translateY;
+
+  function axis(context) {
+    var values = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments) : scale.domain()) : tickValues,
+        format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity) : tickFormat,
+        spacing = Math.max(tickSizeInner, 0) + tickPadding,
+        range = scale.range(),
+        range0 = +range[0] + offset,
+        range1 = +range[range.length - 1] + offset,
+        position = (scale.bandwidth ? center : number)(scale.copy(), offset),
+        selection = context.selection ? context.selection() : context,
+        path = selection.selectAll(".domain").data([null]),
+        tick = selection.selectAll(".tick").data(values, scale).order(),
+        tickExit = tick.exit(),
+        tickEnter = tick.enter().append("g").attr("class", "tick"),
+        line = tick.select("line"),
+        text = tick.select("text");
+
+    path = path.merge(path.enter().insert("path", ".tick")
+        .attr("class", "domain")
+        .attr("stroke", "currentColor"));
+
+    tick = tick.merge(tickEnter);
+
+    line = line.merge(tickEnter.append("line")
+        .attr("stroke", "currentColor")
+        .attr(x + "2", k * tickSizeInner));
+
+    text = text.merge(tickEnter.append("text")
+        .attr("fill", "currentColor")
+        .attr(x, k * spacing)
+        .attr("dy", orient === top ? "0em" : orient === bottom ? "0.71em" : "0.32em"));
+
+    if (context !== selection) {
+      path = path.transition(context);
+      tick = tick.transition(context);
+      line = line.transition(context);
+      text = text.transition(context);
+
+      tickExit = tickExit.transition(context)
+          .attr("opacity", epsilon)
+          .attr("transform", function(d) { return isFinite(d = position(d)) ? transform(d + offset) : this.getAttribute("transform"); });
+
+      tickEnter
+          .attr("opacity", epsilon)
+          .attr("transform", function(d) { var p = this.parentNode.__axis; return transform((p && isFinite(p = p(d)) ? p : position(d)) + offset); });
+    }
+
+    tickExit.remove();
+
+    path
+        .attr("d", orient === left || orient === right
+            ? (tickSizeOuter ? "M" + k * tickSizeOuter + "," + range0 + "H" + offset + "V" + range1 + "H" + k * tickSizeOuter : "M" + offset + "," + range0 + "V" + range1)
+            : (tickSizeOuter ? "M" + range0 + "," + k * tickSizeOuter + "V" + offset + "H" + range1 + "V" + k * tickSizeOuter : "M" + range0 + "," + offset + "H" + range1));
+
+    tick
+        .attr("opacity", 1)
+        .attr("transform", function(d) { return transform(position(d) + offset); });
+
+    line
+        .attr(x + "2", k * tickSizeInner);
+
+    text
+        .attr(x, k * spacing)
+        .text(format);
+
+    selection.filter(entering)
+        .attr("fill", "none")
+        .attr("font-size", 10)
+        .attr("font-family", "sans-serif")
+        .attr("text-anchor", orient === right ? "start" : orient === left ? "end" : "middle");
+
+    selection
+        .each(function() { this.__axis = position; });
+  }
+
+  axis.scale = function(_) {
+    return arguments.length ? (scale = _, axis) : scale;
+  };
+
+  axis.ticks = function() {
+    return tickArguments = Array.from(arguments), axis;
+  };
+
+  axis.tickArguments = function(_) {
+    return arguments.length ? (tickArguments = _ == null ? [] : Array.from(_), axis) : tickArguments.slice();
+  };
+
+  axis.tickValues = function(_) {
+    return arguments.length ? (tickValues = _ == null ? null : Array.from(_), axis) : tickValues && tickValues.slice();
+  };
+
+  axis.tickFormat = function(_) {
+    return arguments.length ? (tickFormat = _, axis) : tickFormat;
+  };
+
+  axis.tickSize = function(_) {
+    return arguments.length ? (tickSizeInner = tickSizeOuter = +_, axis) : tickSizeInner;
+  };
+
+  axis.tickSizeInner = function(_) {
+    return arguments.length ? (tickSizeInner = +_, axis) : tickSizeInner;
+  };
+
+  axis.tickSizeOuter = function(_) {
+    return arguments.length ? (tickSizeOuter = +_, axis) : tickSizeOuter;
+  };
+
+  axis.tickPadding = function(_) {
+    return arguments.length ? (tickPadding = +_, axis) : tickPadding;
+  };
+
+  axis.offset = function(_) {
+    return arguments.length ? (offset = +_, axis) : offset;
+  };
+
+  return axis;
+}
+
+export function axisTop(scale) {
+  return axis(top, scale);
+}
+
+export function axisRight(scale) {
+  return axis(right, scale);
+}
+
+export function axisBottom(scale) {
+  return axis(bottom, scale);
+}
+
+export function axisLeft(scale) {
+  return axis(left, scale);
+}