Add jsdoc and refactor a bit of code

src/diagrams/class/classRenderer-v2.js

@@ -25,8 +25,8 @@ const conf = {
 
 /**
  * Function that adds the vertices found during parsing to the graph to be rendered.
- * @param vert Object containing the vertices.
- * @param g The graph that is to be drawn.
+ * @param {Object<string, { cssClasses: Array<string>; text: string; id: string; type: string; domId: string; }>} classes Object containing the vertices.
+ * @param {SVGGElement} g The graph that is to be drawn.
  */
 export const addClasses = function (classes, g) {
   // const svg = select(`[id="${svgId}"]`);
@@ -226,19 +226,23 @@ export const addRelations = function (relations, g) {
   });
 };
 
-// Todo optimize
+/**
+ * Gets the ID with the same label as in the cache
+ * @param {string} label The label to look for
+ * @returns {string} The resulting ID
+ */
 const getGraphId = function (label) {
-  const keys = Object.keys(idCache);
+  const foundEntry = Object.entries(idCache).find((entry) => entry[1].label === label);
 
-  for (let i = 0; i < keys.length; i++) {
-    if (idCache[keys[i]].label === label) {
-      return keys[i];
-    }
+  if (foundEntry) {
+    return foundEntry[0];
   }
-
-  return undefined;
 };
 
+/**
+ * Merges the value of `conf` with the passed `cnf`
+ * @param {Object} cnf Config to merge
+ */
 export const setConf = function (cnf) {
   const keys = Object.keys(cnf);
 
@@ -249,8 +253,8 @@ export const setConf = function (cnf) {
 
 /**
  * Draws a flowchart in the tag with id: id based on the graph definition in text.
- * @param text
- * @param id
+ * @param {string} text
+ * @param {string} id
  */
 export const drawOld = function (text, id) {
   idCache = {};
@@ -498,10 +502,11 @@ export const draw = function (text, id) {
   // });
 };
 
-export default {
-  setConf,
-  draw,
-};
+/**
+ * Gets the arrow marker for a type index
+ * @param {number} type The type to look for
+ * @returns {"aggregation" | "extension" | "composition" | "dependency"} The arrow marker
+ */
 function getArrowMarker(type) {
   let marker;
   switch (type) {
@@ -522,3 +527,8 @@ function getArrowMarker(type) {
   }
   return marker;
 }
+
+export default {
+  setConf,
+  draw,
+};