Current Dev State

static/js/ketcher2/node_modules/map-limit/index.js

@@ -0,0 +1,54 @@
+var once = require('once')
+var noop = function noop(){}
+
+module.exports = mapLimit
+
+function mapLimit(arr, limit, iterator, callback) {
+  var complete = 0
+  var aborted = false
+  var results = []
+  var queued = 0
+  var l = arr.length
+  var i = 0
+
+  callback = once(callback || noop)
+  if (typeof iterator !== 'function') throw new Error(
+    'Iterator function must be passed as the third argument'
+  )
+
+  for (var r = 0; r < l; r++) {
+    results[r] = null
+  }
+
+  flush()
+
+  function flush() {
+    if (complete === l)
+      return callback(null, results)
+
+    while (queued < limit) {
+      if (aborted) break
+      if (i === l) break
+      push()
+    }
+  }
+
+  function abort(err) {
+    aborted = true
+    return callback(err)
+  }
+
+  function push() {
+    var idx = i++
+
+    queued += 1
+
+    iterator(arr[idx], function(err, result) {
+      if (err) return abort(err)
+      results[idx] = result
+      complete += 1
+      queued -= 1
+      flush()
+    })
+  }
+}