fix: Wrong URL to a missing translation page (#4885)

There're some files that aren't translated into the locale, which causes the "404 Page Not Found" Error when clicking "Edit on GitHub".
Now the current solution is: If the file doesn't exist, it will create a new blank file, with a link of translation guide there to guide what to do next. The user can either continue translating or abandoning it by clicking "Cancel" or "Submit".

Author: Maledong

scripts/plugins/githubLinks.js

@@ -7,7 +7,6 @@ const fs = require('fs');
 const isEditable = `(security|index).html|(about|download|docs|foundation|get-involved|knowledge)\\${sep}`;
 const isEditableReg = new RegExp(isEditable);
 
-// This middleware adds "Edit on GitHub" links to every editable page
 function githubLinks(options) {
   return (files, m, next) => {
     Object.keys(files).forEach((path) => {
@@ -18,7 +17,9 @@ function githubLinks(options) {
       const file = files[path];
       path = path.replace('.html', '.md').replace(/\\/g, '/');
 
-      const currentFilePath = resolve(
+      // Step 1: Check each page's URL (generated by "permalinks") really matches
+      // the real file when converted back to "md".
+      let currentFilePath = resolve(
         __dirname,
         `../../locale/${options.locale}/${path}`
       );
@@ -27,7 +28,23 @@ function githubLinks(options) {
         path = path.replace('/index.md', '.md');
       }
 
-      const url = `https://github.com/nodejs/nodejs.org/edit/main/locale/${options.locale}/${path}`;
+      // Step 2: Check again each page URL's really exists or not (Because some files aren't
+      // localized, you can NEVER find the md file under such localization but under 'en').
+      // we have to create a new file with the given name here:
+      // E.g: 1. Create a new file named "aaa.md" under "locale/zh-cn/":
+      // https://github.com/nodejs/nodejs.org/new/main/locale/zh-cn/locale?filename=aaa.md
+      // E.g: 2. Create a new file with new folders:
+      // https://github.com/nodejs/nodejs.org/new/main/locale/zh-cn/locale?filename=folder1/folder2.../folderN/filename.md
+      let url = `https://github.com/nodejs/nodejs.org/edit/main/locale/${options.locale}/${path}`;
+
+      currentFilePath = resolve(
+        __dirname,
+        `../../locale/${options.locale}/${path}`
+      );
+      if (!fs.existsSync(currentFilePath)) {
+        url = `https://github.com/nodejs/nodejs.org/new/main/locale/${options.locale}/locale?filename=${path}&value=contribute%20your%20translation%20here,for%20more%20you%20can%20see:%20https://github.com/nodejs/nodejs.org/blob/main/TRANSLATION.md`;
+      }
+
       const editOnGitHubTrans = options.site.editOnGithub || 'Edit on GitHub';
       const replCallBack = (match, $1, $2) => {
         return `<div class="openjsfoundation-footer-edit">