Current Dev State

static/js/ketcher2/node_modules/fs-exists-cached/index.js

@@ -0,0 +1,24 @@
+module.exports = exists
+exists.sync = sync
+var fs = require('fs')
+var existsCache = Object.create(null)
+
+function exists (file, cb) {
+  if (file in existsCache)
+    return process.nextTick(cb.bind(null, existsCache[file]))
+  fs.lstat(file, function (er) {
+    cb(existsCache[file] = !er)
+  })
+}
+
+function sync (file) {
+  if (file in existsCache)
+    return existsCache[file]
+  try {
+    fs.lstatSync(file)
+    existsCache[file] = true
+  } catch (er) {
+    existsCache[file] = false
+  }
+  return existsCache[file]
+}