Replace latest and nightly copies in bin/ with symlinks

bin/soljson-latest.js

@@ -0,0 +1 @@
+soljson-v0.6.10+commit.00c0fcaf.js

bin/soljson-nightly.js

@@ -0,0 +1 @@
+soljson-v0.6.11-nightly.2020.6.25+commit.48dd3634.js

update

@@ -111,36 +111,30 @@ dirs.forEach(function (dir) {
       console.log('Updated ' + dir + '/list.js')
     })
 
+    // Update symlinks
     if (dir === '/bin') {
-      // Read latest release file
-      fs.readFile(path.join(__dirname, dir, latestReleaseFile), function (err, data) {
-        if (err) {
-          throw err
-        }
+      const linksAndTargets = {
+        [path.join(dir, '/soljson-latest.js')]: latestReleaseFile,
+        [path.join(dir, '/soljson-nightly.js')]: latestBuildFile
+      }
+
+      for (const link in linksAndTargets) {
+        const absoluteLink = path.join(__dirname, link)
 
-        // Copy to bin/soljson-latest.js
-        fs.writeFile(path.join(__dirname, dir, '/soljson-latest.js'), data, function (err) {
+        fs.lstat(absoluteLink, (err, stats) => {
           if (err) {
             throw err
           }
-          console.log('Updated ' + dir + '/soljson-latest.js')
-        })
-      })
-
-      // Read latest build file
-      fs.readFile(path.join(__dirname, dir, latestBuildFile), function (err, data) {
-        if (err) {
-          throw err
-        }
 
-        // Copy to bin/soljson-nightly.js
-        fs.writeFile(path.join(__dirname, dir, '/soljson-nightly.js'), data, function (err) {
-          if (err) {
-            throw err
+          if (stats) {
+            // It exists. Assume it's a symbolic link. unlinkSync() will fail otherwise anyway.
+            fs.unlinkSync(absoluteLink)
           }
-          console.log('Updated ' + dir + '/soljson-nightly.js')
+
+          fs.symlinkSync(linksAndTargets[link], absoluteLink, 'file')
+          console.log('Updated ' + link + ' to point at ' + linksAndTargets[link])
         })
-      })
+      }
     }
   })
 })