逐步完成前后端服务器

frontend/node_modules/zrender/lib/graphic/shape/Droplet.js

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+import { __extends } from "tslib";
+import Path from '../Path.js';
+var DropletShape = (function () {
+    function DropletShape() {
+        this.cx = 0;
+        this.cy = 0;
+        this.width = 0;
+        this.height = 0;
+    }
+    return DropletShape;
+}());
+export { DropletShape };
+var Droplet = (function (_super) {
+    __extends(Droplet, _super);
+    function Droplet(opts) {
+        return _super.call(this, opts) || this;
+    }
+    Droplet.prototype.getDefaultShape = function () {
+        return new DropletShape();
+    };
+    Droplet.prototype.buildPath = function (ctx, shape) {
+        var x = shape.cx;
+        var y = shape.cy;
+        var a = shape.width;
+        var b = shape.height;
+        ctx.moveTo(x, y + a);
+        ctx.bezierCurveTo(x + a, y + a, x + a * 3 / 2, y - a / 3, x, y - b);
+        ctx.bezierCurveTo(x - a * 3 / 2, y - a / 3, x - a, y + a, x, y + a);
+        ctx.closePath();
+    };
+    return Droplet;
+}(Path));
+Droplet.prototype.type = 'droplet';
+export default Droplet;