Update jsdoc and add destructuring

- Per maintainer review

app/assets/javascripts/ide/components/new_dropdown/upload.vue

@@ -25,10 +25,10 @@ export default {
   },
   methods: {
     createFile(target, file) {
-      const { name } = file;
+      const { name, type: mimeType } = file;
       const encodedContent = target.result.split('base64,')[1];
       const rawContent = encodedContent ? atob(encodedContent) : '';
-      const isText = isTextFile({ content: rawContent, mimeType: file.type, name });
+      const isText = isTextFile({ content: rawContent, mimeType, name });
 
       const emitCreateEvent = content =>
         this.$emit('create', {
@@ -36,7 +36,7 @@ export default {
           type: 'blob',
           content,
           rawPath: !isText ? URL.createObjectURL(file) : '',
-          mimeType: file.type,
+          mimeType,
         });
 
       if (isText) {

app/assets/javascripts/ide/lib/files.js

@@ -12,7 +12,11 @@ export const splitParent = path => {
 /**
  * Create file objects from a list of file paths.
  *
- * @param options.blobData Values to initialize each blob with
+ * @param {Array} options.data Array of blob paths to parse and create a file tree from.
+ * @param {Boolean} options.tempFile Web IDE flag for whether this is a "new" file or not.
+ * @param {String} options.content Content to initialize the new blob with.
+ * @param {String} options.rawPath Raw path used for the new blob.
+ * @param {Object} options.blobData Extra values to initialize each blob with.
  */
 export const decorateFiles = ({
   data,