First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/d3-transition/src/transition/text.js

@@ -0,0 +1,20 @@
+import {tweenValue} from "./tween.js";
+
+function textConstant(value) {
+  return function() {
+    this.textContent = value;
+  };
+}
+
+function textFunction(value) {
+  return function() {
+    var value1 = value(this);
+    this.textContent = value1 == null ? "" : value1;
+  };
+}
+
+export default function(value) {
+  return this.tween("text", typeof value === "function"
+      ? textFunction(tweenValue(this, "text", value))
+      : textConstant(value == null ? "" : value + ""));
+}