Fix region env interpolation

Author: juvenn

docusaurus.config.js

@@ -167,7 +167,24 @@ const config = {
       },
     }),
 
-  plugins: ["docusaurus-plugin-sass"],
+  plugins: [
+    "docusaurus-plugin-sass",
+    function envDefinePlugin() {
+      return {
+        name: "env-define-plugin",
+        configureWebpack() {
+          const webpack = require("webpack");
+          return {
+            plugins: [
+              new webpack.DefinePlugin({
+                "process.env.REGION": JSON.stringify(process.env.REGION || "cn"),
+              }),
+            ],
+          };
+        },
+      };
+    },
+  ],
 };
 
 module.exports = config;

src/constants/env.ts

@@ -1,5 +1,5 @@
 export const BRAND: string = "leancloud";
-export const REGION: string = "cn";
+export const REGION: string = process.env.REGION || "cn";
 
 // Cloud Engine
 export const CLI_BINARY: string = BRAND === "tds" ? "tds" : "lean";