fix: handle non-branch blob pages

src/driver/core/SideBar.js

@@ -16,7 +16,8 @@ const init = dispatch => async () => {
     let detectedBranchName
     const metaData = URLHelper.parse()
     if (DOMHelper.isInCodePage()) {
-      detectedBranchName = DOMHelper.getCurrentBranch()
+      detectedBranchName = DOMHelper.getCurrentBranch() // not working well with non-branch blob
+        || URLHelper.parseBlobSHA() // cannot handle '/' split branch name, should not use when possibly on branch page
     }
     metaData.branchName = detectedBranchName || 'master'
     dispatch(setMetaData, metaData)
@@ -67,12 +68,14 @@ const init = dispatch => async () => {
         }
       })
     }
-    getTreeData.then(treeData => {
-      if (treeData) {
-        // in an unknown rare case this NOT happen
-        dispatch({ treeData })
-      }
-    }).catch(err => dispatch(handleError, err))
+    getTreeData
+      .then(treeData => {
+        if (treeData) {
+          // in an unknown rare case this NOT happen
+          dispatch({ treeData })
+        }
+      })
+      .catch(err => dispatch(handleError, err))
     Object.assign(metaData, { api: metaDataFromAPI })
     dispatch(setMetaData, metaData)
     const shouldShow = URLHelper.isInCodePage(metaData)

src/utils/URLHelper.js

@@ -1,9 +1,10 @@
-import { raiseError } from "analytics";
+import { raiseError } from 'analytics'
 
 function parse() {
   const { pathname } = window.location
   let [
-    , // ignore content before the first '/'
+    ,
+    // ignore content before the first '/'
     userName,
     repoName,
     type,
@@ -17,6 +18,11 @@ function parse() {
   }
 }
 
+function parseBlobSHA() {
+  const { type, path } = parse()
+  return type === 'blob' ? path[0] : false
+}
+
 function isInRepoPage() {
   const repoHeaderSelector = '.repohead'
   return Boolean(document.querySelector(repoHeaderSelector))
@@ -36,9 +42,9 @@ function isInCodePage(metaData = {}) {
   const { type, branchName } = mergedRepo
   return Boolean(
     isInRepoPage(mergedRepo) &&
-    (!type || type === TYPES.TREE || type === TYPES.BLOB) &&
-    type !== TYPES.COMMIT &&
-    (branchName || (!type && !branchName))
+      (!type || type === TYPES.TREE || type === TYPES.BLOB) &&
+      type !== TYPES.COMMIT &&
+      (branchName || (!type && !branchName))
   )
 }
 
@@ -75,4 +81,5 @@ export default {
   isInRepoPage,
   isInCodePage,
   parse,
+  parseBlobSHA,
 }