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frontend/node_modules/d3-shape/src/arc.js

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+import constant from "./constant.js";
+import {abs, acos, asin, atan2, cos, epsilon, halfPi, max, min, pi, sin, sqrt, tau} from "./math.js";
+import {withPath} from "./path.js";
+
+function arcInnerRadius(d) {
+  return d.innerRadius;
+}
+
+function arcOuterRadius(d) {
+  return d.outerRadius;
+}
+
+function arcStartAngle(d) {
+  return d.startAngle;
+}
+
+function arcEndAngle(d) {
+  return d.endAngle;
+}
+
+function arcPadAngle(d) {
+  return d && d.padAngle; // Note: optional!
+}
+
+function intersect(x0, y0, x1, y1, x2, y2, x3, y3) {
+  var x10 = x1 - x0, y10 = y1 - y0,
+      x32 = x3 - x2, y32 = y3 - y2,
+      t = y32 * x10 - x32 * y10;
+  if (t * t < epsilon) return;
+  t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t;
+  return [x0 + t * x10, y0 + t * y10];
+}
+
+// Compute perpendicular offset line of length rc.
+// http://mathworld.wolfram.com/Circle-LineIntersection.html
+function cornerTangents(x0, y0, x1, y1, r1, rc, cw) {
+  var x01 = x0 - x1,
+      y01 = y0 - y1,
+      lo = (cw ? rc : -rc) / sqrt(x01 * x01 + y01 * y01),
+      ox = lo * y01,
+      oy = -lo * x01,
+      x11 = x0 + ox,
+      y11 = y0 + oy,
+      x10 = x1 + ox,
+      y10 = y1 + oy,
+      x00 = (x11 + x10) / 2,
+      y00 = (y11 + y10) / 2,
+      dx = x10 - x11,
+      dy = y10 - y11,
+      d2 = dx * dx + dy * dy,
+      r = r1 - rc,
+      D = x11 * y10 - x10 * y11,
+      d = (dy < 0 ? -1 : 1) * sqrt(max(0, r * r * d2 - D * D)),
+      cx0 = (D * dy - dx * d) / d2,
+      cy0 = (-D * dx - dy * d) / d2,
+      cx1 = (D * dy + dx * d) / d2,
+      cy1 = (-D * dx + dy * d) / d2,
+      dx0 = cx0 - x00,
+      dy0 = cy0 - y00,
+      dx1 = cx1 - x00,
+      dy1 = cy1 - y00;
+
+  // Pick the closer of the two intersection points.
+  // TODO Is there a faster way to determine which intersection to use?
+  if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
+
+  return {
+    cx: cx0,
+    cy: cy0,
+    x01: -ox,
+    y01: -oy,
+    x11: cx0 * (r1 / r - 1),
+    y11: cy0 * (r1 / r - 1)
+  };
+}
+
+export default function() {
+  var innerRadius = arcInnerRadius,
+      outerRadius = arcOuterRadius,
+      cornerRadius = constant(0),
+      padRadius = null,
+      startAngle = arcStartAngle,
+      endAngle = arcEndAngle,
+      padAngle = arcPadAngle,
+      context = null,
+      path = withPath(arc);
+
+  function arc() {
+    var buffer,
+        r,
+        r0 = +innerRadius.apply(this, arguments),
+        r1 = +outerRadius.apply(this, arguments),
+        a0 = startAngle.apply(this, arguments) - halfPi,
+        a1 = endAngle.apply(this, arguments) - halfPi,
+        da = abs(a1 - a0),
+        cw = a1 > a0;
+
+    if (!context) context = buffer = path();
+
+    // Ensure that the outer radius is always larger than the inner radius.
+    if (r1 < r0) r = r1, r1 = r0, r0 = r;
+
+    // Is it a point?
+    if (!(r1 > epsilon)) context.moveTo(0, 0);
+
+    // Or is it a circle or annulus?
+    else if (da > tau - epsilon) {
+      context.moveTo(r1 * cos(a0), r1 * sin(a0));
+      context.arc(0, 0, r1, a0, a1, !cw);
+      if (r0 > epsilon) {
+        context.moveTo(r0 * cos(a1), r0 * sin(a1));
+        context.arc(0, 0, r0, a1, a0, cw);
+      }
+    }
+
+    // Or is it a circular or annular sector?
+    else {
+      var a01 = a0,
+          a11 = a1,
+          a00 = a0,
+          a10 = a1,
+          da0 = da,
+          da1 = da,
+          ap = padAngle.apply(this, arguments) / 2,
+          rp = (ap > epsilon) && (padRadius ? +padRadius.apply(this, arguments) : sqrt(r0 * r0 + r1 * r1)),
+          rc = min(abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)),
+          rc0 = rc,
+          rc1 = rc,
+          t0,
+          t1;
+
+      // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0.
+      if (rp > epsilon) {
+        var p0 = asin(rp / r0 * sin(ap)),
+            p1 = asin(rp / r1 * sin(ap));
+        if ((da0 -= p0 * 2) > epsilon) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0;
+        else da0 = 0, a00 = a10 = (a0 + a1) / 2;
+        if ((da1 -= p1 * 2) > epsilon) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1;
+        else da1 = 0, a01 = a11 = (a0 + a1) / 2;
+      }
+
+      var x01 = r1 * cos(a01),
+          y01 = r1 * sin(a01),
+          x10 = r0 * cos(a10),
+          y10 = r0 * sin(a10);
+
+      // Apply rounded corners?
+      if (rc > epsilon) {
+        var x11 = r1 * cos(a11),
+            y11 = r1 * sin(a11),
+            x00 = r0 * cos(a00),
+            y00 = r0 * sin(a00),
+            oc;
+
+        // Restrict the corner radius according to the sector angle. If this
+        // intersection fails, it’s probably because the arc is too small, so
+        // disable the corner radius entirely.
+        if (da < pi) {
+          if (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10)) {
+            var ax = x01 - oc[0],
+                ay = y01 - oc[1],
+                bx = x11 - oc[0],
+                by = y11 - oc[1],
+                kc = 1 / sin(acos((ax * bx + ay * by) / (sqrt(ax * ax + ay * ay) * sqrt(bx * bx + by * by))) / 2),
+                lc = sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
+            rc0 = min(rc, (r0 - lc) / (kc - 1));
+            rc1 = min(rc, (r1 - lc) / (kc + 1));
+          } else {
+            rc0 = rc1 = 0;
+          }
+        }
+      }
+
+      // Is the sector collapsed to a line?
+      if (!(da1 > epsilon)) context.moveTo(x01, y01);
+
+      // Does the sector’s outer ring have rounded corners?
+      else if (rc1 > epsilon) {
+        t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw);
+        t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw);
+
+        context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+        // Have the corners merged?
+        if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
+
+        // Otherwise, draw the two corners and the ring.
+        else {
+          context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
+          context.arc(0, 0, r1, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw);
+          context.arc(t1.cx, t1.cy, rc1, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
+        }
+      }
+
+      // Or is the outer ring just a circular arc?
+      else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw);
+
+      // Is there no inner ring, and it’s a circular sector?
+      // Or perhaps it’s an annular sector collapsed due to padding?
+      if (!(r0 > epsilon) || !(da0 > epsilon)) context.lineTo(x10, y10);
+
+      // Does the sector’s inner ring (or point) have rounded corners?
+      else if (rc0 > epsilon) {
+        t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw);
+        t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw);
+
+        context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+        // Have the corners merged?
+        if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
+
+        // Otherwise, draw the two corners and the ring.
+        else {
+          context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
+          context.arc(0, 0, r0, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw);
+          context.arc(t1.cx, t1.cy, rc0, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
+        }
+      }
+
+      // Or is the inner ring just a circular arc?
+      else context.arc(0, 0, r0, a10, a00, cw);
+    }
+
+    context.closePath();
+
+    if (buffer) return context = null, buffer + "" || null;
+  }
+
+  arc.centroid = function() {
+    var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2,
+        a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi / 2;
+    return [cos(a) * r, sin(a) * r];
+  };
+
+  arc.innerRadius = function(_) {
+    return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant(+_), arc) : innerRadius;
+  };
+
+  arc.outerRadius = function(_) {
+    return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant(+_), arc) : outerRadius;
+  };
+
+  arc.cornerRadius = function(_) {
+    return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant(+_), arc) : cornerRadius;
+  };
+
+  arc.padRadius = function(_) {
+    return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant(+_), arc) : padRadius;
+  };
+
+  arc.startAngle = function(_) {
+    return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), arc) : startAngle;
+  };
+
+  arc.endAngle = function(_) {
+    return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), arc) : endAngle;
+  };
+
+  arc.padAngle = function(_) {
+    return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), arc) : padAngle;
+  };
+
+  arc.context = function(_) {
+    return arguments.length ? ((context = _ == null ? null : _), arc) : context;
+  };
+
+  return arc;
+}

frontend/node_modules/d3-shape/src/areaRadial.js

@@ -0,0 +1,29 @@
+import curveRadial, {curveRadialLinear} from "./curve/radial.js";
+import area from "./area.js";
+import {lineRadial} from "./lineRadial.js";
+
+export default function() {
+  var a = area().curve(curveRadialLinear),
+      c = a.curve,
+      x0 = a.lineX0,
+      x1 = a.lineX1,
+      y0 = a.lineY0,
+      y1 = a.lineY1;
+
+  a.angle = a.x, delete a.x;
+  a.startAngle = a.x0, delete a.x0;
+  a.endAngle = a.x1, delete a.x1;
+  a.radius = a.y, delete a.y;
+  a.innerRadius = a.y0, delete a.y0;
+  a.outerRadius = a.y1, delete a.y1;
+  a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0;
+  a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1;
+  a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0;
+  a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1;
+
+  a.curve = function(_) {
+    return arguments.length ? c(curveRadial(_)) : c()._curve;
+  };
+
+  return a;
+}

frontend/node_modules/d3-shape/src/curve/bundle.js

@@ -0,0 +1,56 @@
+import {Basis} from "./basis.js";
+
+function Bundle(context, beta) {
+  this._basis = new Basis(context);
+  this._beta = beta;
+}
+
+Bundle.prototype = {
+  lineStart: function() {
+    this._x = [];
+    this._y = [];
+    this._basis.lineStart();
+  },
+  lineEnd: function() {
+    var x = this._x,
+        y = this._y,
+        j = x.length - 1;
+
+    if (j > 0) {
+      var x0 = x[0],
+          y0 = y[0],
+          dx = x[j] - x0,
+          dy = y[j] - y0,
+          i = -1,
+          t;
+
+      while (++i <= j) {
+        t = i / j;
+        this._basis.point(
+          this._beta * x[i] + (1 - this._beta) * (x0 + t * dx),
+          this._beta * y[i] + (1 - this._beta) * (y0 + t * dy)
+        );
+      }
+    }
+
+    this._x = this._y = null;
+    this._basis.lineEnd();
+  },
+  point: function(x, y) {
+    this._x.push(+x);
+    this._y.push(+y);
+  }
+};
+
+export default (function custom(beta) {
+
+  function bundle(context) {
+    return beta === 1 ? new Basis(context) : new Bundle(context, beta);
+  }
+
+  bundle.beta = function(beta) {
+    return custom(+beta);
+  };
+
+  return bundle;
+})(0.85);

frontend/node_modules/d3-shape/src/curve/cardinalClosed.js

@@ -0,0 +1,61 @@
+import noop from "../noop.js";
+import {point} from "./cardinal.js";
+
+export function CardinalClosed(context, tension) {
+  this._context = context;
+  this._k = (1 - tension) / 6;
+}
+
+CardinalClosed.prototype = {
+  areaStart: noop,
+  areaEnd: noop,
+  lineStart: function() {
+    this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+    this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+    this._point = 0;
+  },
+  lineEnd: function() {
+    switch (this._point) {
+      case 1: {
+        this._context.moveTo(this._x3, this._y3);
+        this._context.closePath();
+        break;
+      }
+      case 2: {
+        this._context.lineTo(this._x3, this._y3);
+        this._context.closePath();
+        break;
+      }
+      case 3: {
+        this.point(this._x3, this._y3);
+        this.point(this._x4, this._y4);
+        this.point(this._x5, this._y5);
+        break;
+      }
+    }
+  },
+  point: function(x, y) {
+    x = +x, y = +y;
+    switch (this._point) {
+      case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+      case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+      case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+      default: point(this, x, y); break;
+    }
+    this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+    this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+  }
+};
+
+export default (function custom(tension) {
+
+  function cardinal(context) {
+    return new CardinalClosed(context, tension);
+  }
+
+  cardinal.tension = function(tension) {
+    return custom(+tension);
+  };
+
+  return cardinal;
+})(0);

frontend/node_modules/d3-shape/src/curve/catmullRomClosed.js

@@ -0,0 +1,74 @@
+import {CardinalClosed} from "./cardinalClosed.js";
+import noop from "../noop.js";
+import {point} from "./catmullRom.js";
+
+function CatmullRomClosed(context, alpha) {
+  this._context = context;
+  this._alpha = alpha;
+}
+
+CatmullRomClosed.prototype = {
+  areaStart: noop,
+  areaEnd: noop,
+  lineStart: function() {
+    this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+    this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+    this._l01_a = this._l12_a = this._l23_a =
+    this._l01_2a = this._l12_2a = this._l23_2a =
+    this._point = 0;
+  },
+  lineEnd: function() {
+    switch (this._point) {
+      case 1: {
+        this._context.moveTo(this._x3, this._y3);
+        this._context.closePath();
+        break;
+      }
+      case 2: {
+        this._context.lineTo(this._x3, this._y3);
+        this._context.closePath();
+        break;
+      }
+      case 3: {
+        this.point(this._x3, this._y3);
+        this.point(this._x4, this._y4);
+        this.point(this._x5, this._y5);
+        break;
+      }
+    }
+  },
+  point: function(x, y) {
+    x = +x, y = +y;
+
+    if (this._point) {
+      var x23 = this._x2 - x,
+          y23 = this._y2 - y;
+      this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+    }
+
+    switch (this._point) {
+      case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+      case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+      case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+      default: point(this, x, y); break;
+    }
+
+    this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+    this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+    this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+    this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+  }
+};
+
+export default (function custom(alpha) {
+
+  function catmullRom(context) {
+    return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0);
+  }
+
+  catmullRom.alpha = function(alpha) {
+    return custom(+alpha);
+  };
+
+  return catmullRom;
+})(0.5);

frontend/node_modules/d3-shape/src/curve/linearClosed.js

@@ -0,0 +1,25 @@
+import noop from "../noop.js";
+
+function LinearClosed(context) {
+  this._context = context;
+}
+
+LinearClosed.prototype = {
+  areaStart: noop,
+  areaEnd: noop,
+  lineStart: function() {
+    this._point = 0;
+  },
+  lineEnd: function() {
+    if (this._point) this._context.closePath();
+  },
+  point: function(x, y) {
+    x = +x, y = +y;
+    if (this._point) this._context.lineTo(x, y);
+    else this._point = 1, this._context.moveTo(x, y);
+  }
+};
+
+export default function(context) {
+  return new LinearClosed(context);
+}

frontend/node_modules/d3-shape/src/curve/radial.js

@@ -0,0 +1,36 @@
+import curveLinear from "./linear.js";
+
+export var curveRadialLinear = curveRadial(curveLinear);
+
+function Radial(curve) {
+  this._curve = curve;
+}
+
+Radial.prototype = {
+  areaStart: function() {
+    this._curve.areaStart();
+  },
+  areaEnd: function() {
+    this._curve.areaEnd();
+  },
+  lineStart: function() {
+    this._curve.lineStart();
+  },
+  lineEnd: function() {
+    this._curve.lineEnd();
+  },
+  point: function(a, r) {
+    this._curve.point(r * Math.sin(a), r * -Math.cos(a));
+  }
+};
+
+export default function curveRadial(curve) {
+
+  function radial(context) {
+    return new Radial(curve(context));
+  }
+
+  radial._curve = curve;
+
+  return radial;
+}

frontend/node_modules/d3-shape/src/curve/step.js

@@ -0,0 +1,53 @@
+function Step(context, t) {
+  this._context = context;
+  this._t = t;
+}
+
+Step.prototype = {
+  areaStart: function() {
+    this._line = 0;
+  },
+  areaEnd: function() {
+    this._line = NaN;
+  },
+  lineStart: function() {
+    this._x = this._y = NaN;
+    this._point = 0;
+  },
+  lineEnd: function() {
+    if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y);
+    if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+    if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line;
+  },
+  point: function(x, y) {
+    x = +x, y = +y;
+    switch (this._point) {
+      case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+      case 1: this._point = 2; // falls through
+      default: {
+        if (this._t <= 0) {
+          this._context.lineTo(this._x, y);
+          this._context.lineTo(x, y);
+        } else {
+          var x1 = this._x * (1 - this._t) + x * this._t;
+          this._context.lineTo(x1, this._y);
+          this._context.lineTo(x1, y);
+        }
+        break;
+      }
+    }
+    this._x = x, this._y = y;
+  }
+};
+
+export default function(context) {
+  return new Step(context, 0.5);
+}
+
+export function stepBefore(context) {
+  return new Step(context, 0);
+}
+
+export function stepAfter(context) {
+  return new Step(context, 1);
+}

frontend/node_modules/d3-shape/src/descending.js

@@ -0,0 +1,3 @@
+export default function(a, b) {
+  return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+}

frontend/node_modules/d3-shape/src/identity.js

@@ -0,0 +1,3 @@
+export default function(d) {
+  return d;
+}

frontend/node_modules/d3-shape/src/line.js

@@ -0,0 +1,58 @@
+import array from "./array.js";
+import constant from "./constant.js";
+import curveLinear from "./curve/linear.js";
+import {withPath} from "./path.js";
+import {x as pointX, y as pointY} from "./point.js";
+
+export default function(x, y) {
+  var defined = constant(true),
+      context = null,
+      curve = curveLinear,
+      output = null,
+      path = withPath(line);
+
+  x = typeof x === "function" ? x : (x === undefined) ? pointX : constant(x);
+  y = typeof y === "function" ? y : (y === undefined) ? pointY : constant(y);
+
+  function line(data) {
+    var i,
+        n = (data = array(data)).length,
+        d,
+        defined0 = false,
+        buffer;
+
+    if (context == null) output = curve(buffer = path());
+
+    for (i = 0; i <= n; ++i) {
+      if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+        if (defined0 = !defined0) output.lineStart();
+        else output.lineEnd();
+      }
+      if (defined0) output.point(+x(d, i, data), +y(d, i, data));
+    }
+
+    if (buffer) return output = null, buffer + "" || null;
+  }
+
+  line.x = function(_) {
+    return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), line) : x;
+  };
+
+  line.y = function(_) {
+    return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), line) : y;
+  };
+
+  line.defined = function(_) {
+    return arguments.length ? (defined = typeof _ === "function" ? _ : constant(!!_), line) : defined;
+  };
+
+  line.curve = function(_) {
+    return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve;
+  };
+
+  line.context = function(_) {
+    return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context;
+  };
+
+  return line;
+}

frontend/node_modules/d3-shape/src/lineRadial.js

@@ -0,0 +1,19 @@
+import curveRadial, {curveRadialLinear} from "./curve/radial.js";
+import line from "./line.js";
+
+export function lineRadial(l) {
+  var c = l.curve;
+
+  l.angle = l.x, delete l.x;
+  l.radius = l.y, delete l.y;
+
+  l.curve = function(_) {
+    return arguments.length ? c(curveRadial(_)) : c()._curve;
+  };
+
+  return l;
+}
+
+export default function() {
+  return lineRadial(line().curve(curveRadialLinear));
+}

frontend/node_modules/d3-shape/src/link.js

@@ -0,0 +1,73 @@
+import {slice} from "./array.js";
+import constant from "./constant.js";
+import {bumpX, bumpY, bumpRadial} from "./curve/bump.js";
+import {withPath} from "./path.js";
+import {x as pointX, y as pointY} from "./point.js";
+
+function linkSource(d) {
+  return d.source;
+}
+
+function linkTarget(d) {
+  return d.target;
+}
+
+export function link(curve) {
+  let source = linkSource,
+      target = linkTarget,
+      x = pointX,
+      y = pointY,
+      context = null,
+      output = null,
+      path = withPath(link);
+
+  function link() {
+    let buffer;
+    const argv = slice.call(arguments);
+    const s = source.apply(this, argv);
+    const t = target.apply(this, argv);
+    if (context == null) output = curve(buffer = path());
+    output.lineStart();
+    argv[0] = s, output.point(+x.apply(this, argv), +y.apply(this, argv));
+    argv[0] = t, output.point(+x.apply(this, argv), +y.apply(this, argv));
+    output.lineEnd();
+    if (buffer) return output = null, buffer + "" || null;
+  }
+
+  link.source = function(_) {
+    return arguments.length ? (source = _, link) : source;
+  };
+
+  link.target = function(_) {
+    return arguments.length ? (target = _, link) : target;
+  };
+
+  link.x = function(_) {
+    return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), link) : x;
+  };
+
+  link.y = function(_) {
+    return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), link) : y;
+  };
+
+  link.context = function(_) {
+    return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), link) : context;
+  };
+
+  return link;
+}
+
+export function linkHorizontal() {
+  return link(bumpX);
+}
+
+export function linkVertical() {
+  return link(bumpY);
+}
+
+export function linkRadial() {
+  const l = link(bumpRadial);
+  l.angle = l.x, delete l.x;
+  l.radius = l.y, delete l.y;
+  return l;
+}

frontend/node_modules/d3-shape/src/noop.js

@@ -0,0 +1 @@
+export default function() {}

frontend/node_modules/d3-shape/src/offset/diverging.js

@@ -0,0 +1,14 @@
+export default function(series, order) {
+  if (!((n = series.length) > 0)) return;
+  for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) {
+    for (yp = yn = 0, i = 0; i < n; ++i) {
+      if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) {
+        d[0] = yp, d[1] = yp += dy;
+      } else if (dy < 0) {
+        d[1] = yn, d[0] = yn += dy;
+      } else {
+        d[0] = 0, d[1] = dy;
+      }
+    }
+  }
+}

frontend/node_modules/d3-shape/src/offset/expand.js

@@ -0,0 +1,10 @@
+import none from "./none.js";
+
+export default function(series, order) {
+  if (!((n = series.length) > 0)) return;
+  for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) {
+    for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0;
+    if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y;
+  }
+  none(series, order);
+}

frontend/node_modules/d3-shape/src/offset/silhouette.js

@@ -0,0 +1,10 @@
+import none from "./none.js";
+
+export default function(series, order) {
+  if (!((n = series.length) > 0)) return;
+  for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) {
+    for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0;
+    s0[j][1] += s0[j][0] = -y / 2;
+  }
+  none(series, order);
+}

frontend/node_modules/d3-shape/src/offset/wiggle.js

@@ -0,0 +1,24 @@
+import none from "./none.js";
+
+export default function(series, order) {
+  if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return;
+  for (var y = 0, j = 1, s0, m, n; j < m; ++j) {
+    for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) {
+      var si = series[order[i]],
+          sij0 = si[j][1] || 0,
+          sij1 = si[j - 1][1] || 0,
+          s3 = (sij0 - sij1) / 2;
+      for (var k = 0; k < i; ++k) {
+        var sk = series[order[k]],
+            skj0 = sk[j][1] || 0,
+            skj1 = sk[j - 1][1] || 0;
+        s3 += skj0 - skj1;
+      }
+      s1 += sij0, s2 += s3 * sij0;
+    }
+    s0[j - 1][1] += s0[j - 1][0] = y;
+    if (s1) y -= s2 / s1;
+  }
+  s0[j - 1][1] += s0[j - 1][0] = y;
+  none(series, order);
+}

frontend/node_modules/d3-shape/src/order/reverse.js

@@ -0,0 +1,5 @@
+import none from "./none.js";
+
+export default function(series) {
+  return none(series).reverse();
+}

frontend/node_modules/d3-shape/src/pie.js

@@ -0,0 +1,80 @@
+import array from "./array.js";
+import constant from "./constant.js";
+import descending from "./descending.js";
+import identity from "./identity.js";
+import {tau} from "./math.js";
+
+export default function() {
+  var value = identity,
+      sortValues = descending,
+      sort = null,
+      startAngle = constant(0),
+      endAngle = constant(tau),
+      padAngle = constant(0);
+
+  function pie(data) {
+    var i,
+        n = (data = array(data)).length,
+        j,
+        k,
+        sum = 0,
+        index = new Array(n),
+        arcs = new Array(n),
+        a0 = +startAngle.apply(this, arguments),
+        da = Math.min(tau, Math.max(-tau, endAngle.apply(this, arguments) - a0)),
+        a1,
+        p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)),
+        pa = p * (da < 0 ? -1 : 1),
+        v;
+
+    for (i = 0; i < n; ++i) {
+      if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) {
+        sum += v;
+      }
+    }
+
+    // Optionally sort the arcs by previously-computed values or by data.
+    if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); });
+    else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); });
+
+    // Compute the arcs! They are stored in the original data's order.
+    for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) {
+      j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = {
+        data: data[j],
+        index: i,
+        value: v,
+        startAngle: a0,
+        endAngle: a1,
+        padAngle: p
+      };
+    }
+
+    return arcs;
+  }
+
+  pie.value = function(_) {
+    return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), pie) : value;
+  };
+
+  pie.sortValues = function(_) {
+    return arguments.length ? (sortValues = _, sort = null, pie) : sortValues;
+  };
+
+  pie.sort = function(_) {
+    return arguments.length ? (sort = _, sortValues = null, pie) : sort;
+  };
+
+  pie.startAngle = function(_) {
+    return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), pie) : startAngle;
+  };
+
+  pie.endAngle = function(_) {
+    return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), pie) : endAngle;
+  };
+
+  pie.padAngle = function(_) {
+    return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), pie) : padAngle;
+  };
+
+  return pie;
+}

frontend/node_modules/d3-shape/src/stack.js

@@ -0,0 +1,58 @@
+import array from "./array.js";
+import constant from "./constant.js";
+import offsetNone from "./offset/none.js";
+import orderNone from "./order/none.js";
+
+function stackValue(d, key) {
+  return d[key];
+}
+
+function stackSeries(key) {
+  const series = [];
+  series.key = key;
+  return series;
+}
+
+export default function() {
+  var keys = constant([]),
+      order = orderNone,
+      offset = offsetNone,
+      value = stackValue;
+
+  function stack(data) {
+    var sz = Array.from(keys.apply(this, arguments), stackSeries),
+        i, n = sz.length, j = -1,
+        oz;
+
+    for (const d of data) {
+      for (i = 0, ++j; i < n; ++i) {
+        (sz[i][j] = [0, +value(d, sz[i].key, j, data)]).data = d;
+      }
+    }
+
+    for (i = 0, oz = array(order(sz)); i < n; ++i) {
+      sz[oz[i]].index = i;
+    }
+
+    offset(sz, oz);
+    return sz;
+  }
+
+  stack.keys = function(_) {
+    return arguments.length ? (keys = typeof _ === "function" ? _ : constant(Array.from(_)), stack) : keys;
+  };
+
+  stack.value = function(_) {
+    return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), stack) : value;
+  };
+
+  stack.order = function(_) {
+    return arguments.length ? (order = _ == null ? orderNone : typeof _ === "function" ? _ : constant(Array.from(_)), stack) : order;
+  };
+
+  stack.offset = function(_) {
+    return arguments.length ? (offset = _ == null ? offsetNone : _, stack) : offset;
+  };
+
+  return stack;
+}

frontend/node_modules/d3-shape/src/symbol/asterisk.js

@@ -0,0 +1,17 @@
+import {min, sqrt} from "../math.js";
+
+const sqrt3 = sqrt(3);
+
+export default {
+  draw(context, size) {
+    const r = sqrt(size + min(size / 28, 0.75)) * 0.59436;
+    const t = r / 2;
+    const u = t * sqrt3;
+    context.moveTo(0, r);
+    context.lineTo(0, -r);
+    context.moveTo(-u, -t);
+    context.lineTo(u, t);
+    context.moveTo(-u, t);
+    context.lineTo(u, -t);
+  }
+};

frontend/node_modules/d3-shape/src/symbol/circle.js

@@ -0,0 +1,9 @@
+import {pi, sqrt, tau} from "../math.js";
+
+export default {
+  draw(context, size) {
+    const r = sqrt(size / pi);
+    context.moveTo(r, 0);
+    context.arc(0, 0, r, 0, tau);
+  }
+};

frontend/node_modules/d3-shape/src/symbol/diamond.js

@@ -0,0 +1,16 @@
+import {sqrt} from "../math.js";
+
+const tan30 = sqrt(1 / 3);
+const tan30_2 = tan30 * 2;
+
+export default {
+  draw(context, size) {
+    const y = sqrt(size / tan30_2);
+    const x = y * tan30;
+    context.moveTo(0, -y);
+    context.lineTo(x, 0);
+    context.lineTo(0, y);
+    context.lineTo(-x, 0);
+    context.closePath();
+  }
+};

frontend/node_modules/d3-shape/src/symbol/square.js

@@ -0,0 +1,9 @@
+import {sqrt} from "../math.js";
+
+export default {
+  draw(context, size) {
+    const w = sqrt(size);
+    const x = -w / 2;
+    context.rect(x, x, w, w);
+  }
+};

frontend/node_modules/d3-shape/src/symbol/square2.js

@@ -0,0 +1,12 @@
+import {sqrt} from "../math.js";
+
+export default {
+  draw(context, size) {
+    const r = sqrt(size) * 0.4431;
+    context.moveTo(r, r);
+    context.lineTo(r, -r);
+    context.lineTo(-r, -r);
+    context.lineTo(-r, r);
+    context.closePath();
+  }
+};

frontend/node_modules/d3-shape/src/symbol/times.js

@@ -0,0 +1,11 @@
+import {min, sqrt} from "../math.js";
+
+export default {
+  draw(context, size) {
+    const r = sqrt(size - min(size / 6, 1.7)) * 0.6189;
+    context.moveTo(-r, -r);
+    context.lineTo(r, r);
+    context.moveTo(-r, r);
+    context.lineTo(r, -r);
+  }
+};

frontend/node_modules/d3-shape/src/symbol/wye.js

@@ -0,0 +1,25 @@
+import {sqrt} from "../math.js";
+
+const c = -0.5;
+const s = sqrt(3) / 2;
+const k = 1 / sqrt(12);
+const a = (k / 2 + 1) * 3;
+
+export default {
+  draw(context, size) {
+    const r = sqrt(size / a);
+    const x0 = r / 2, y0 = r * k;
+    const x1 = x0, y1 = r * k + r;
+    const x2 = -x1, y2 = y1;
+    context.moveTo(x0, y0);
+    context.lineTo(x1, y1);
+    context.lineTo(x2, y2);
+    context.lineTo(c * x0 - s * y0, s * x0 + c * y0);
+    context.lineTo(c * x1 - s * y1, s * x1 + c * y1);
+    context.lineTo(c * x2 - s * y2, s * x2 + c * y2);
+    context.lineTo(c * x0 + s * y0, c * y0 - s * x0);
+    context.lineTo(c * x1 + s * y1, c * y1 - s * x1);
+    context.lineTo(c * x2 + s * y2, c * y2 - s * x2);
+    context.closePath();
+  }
+};