feat：新增全局默认参数配置

src/config/index.ts

@@ -0,0 +1,25 @@
+let config: object = {}
+
+const setConfig = (cfg?: any) => {
+  config = Object.assign(config, cfg)
+}
+
+const getConfig = (key?: string) => {
+  if (typeof key === "string") {
+    const arr = key.split(".")
+    if (arr && arr.length) {
+      let data = config
+      arr.forEach(v => {
+        if (data && typeof data[v] !== "undefined") {
+          data = data[v]
+        } else {
+          data = null
+        }
+      })
+      return data
+    }
+  }
+  return config
+}
+
+export { getConfig, setConfig }