#884 Merging configuration updates to previous condifguration.

src/config.js

@@ -1,8 +1,29 @@
 let config = {
-  securityLevel: 'strict'
 }
 
+const setConf = function (cnf) {
+  // Top level initially mermaid, gflow, sequenceDiagram and gantt
+  const lvl1Keys = Object.keys(cnf)
+  for (let i = 0; i < lvl1Keys.length; i++) {
+    if (typeof cnf[lvl1Keys[i]] === 'object' && cnf[lvl1Keys[i]] != null) {
+      const lvl2Keys = Object.keys(cnf[lvl1Keys[i]])
+
+      for (let j = 0; j < lvl2Keys.length; j++) {
+        // logger.debug('Setting conf ', lvl1Keys[i], '-', lvl2Keys[j])
+        if (typeof config[lvl1Keys[i]] === 'undefined') {
+          config[lvl1Keys[i]] = {}
+        }
+        // logger.debug('Setting config: ' + lvl1Keys[i] + ' ' + lvl2Keys[j] + ' to ' + cnf[lvl1Keys[i]][lvl2Keys[j]])
+        config[lvl1Keys[i]][lvl2Keys[j]] = cnf[lvl1Keys[i]][lvl2Keys[j]]
+      }
+    } else {
+      config[lvl1Keys[i]] = cnf[lvl1Keys[i]]
+    }
+  }
+}
+
+
 export const setConfig = conf => {
-  config = conf
+  setConf(conf)
 }
 export const getConfig = () => config