1 files changed, 65 insertions, 0 deletions
diff --git a/node_modules/load-script/index.js b/node_modules/load-script/index.js
new file mode 100644
index 00000000..667b9193
--- /dev/null
+++ b/node_modules/load-script/index.js
@@ -0,0 +1,65 @@
+
+module.exports = function load (src, opts, cb) {
+  var head = document.head || document.getElementsByTagName('head')[0]
+  var script = document.createElement('script')
+
+  if (typeof opts === 'function') {
+    cb = opts
+    opts = {}
+  }
+
+  opts = opts || {}
+  cb = cb || function() {}
+
+  script.type = opts.type || 'text/javascript'
+  script.charset = opts.charset || 'utf8';
+  script.async = 'async' in opts ? !!opts.async : true
+  script.src = src
+
+  if (opts.attrs) {
+    setAttributes(script, opts.attrs)
+  }
+
+  if (opts.text) {
+    script.text = '' + opts.text
+  }
+
+  var onend = 'onload' in script ? stdOnEnd : ieOnEnd
+  onend(script, cb)
+
+  // some good legacy browsers (firefox) fail the 'in' detection above
+  // so as a fallback we always set onload
+  // old IE will ignore this and new IE will set onload
+  if (!script.onload) {
+    stdOnEnd(script, cb);
+  }
+
+  head.appendChild(script)
+}
+
+function setAttributes(script, attrs) {
+  for (var attr in attrs) {
+    script.setAttribute(attr, attrs[attr]);
+  }
+}
+
+function stdOnEnd (script, cb) {
+  script.onload = function () {
+    this.onerror = this.onload = null
+    cb(null, script)
+  }
+  script.onerror = function () {
+    // this.onload = null here is necessary
+    // because even IE9 works not like others
+    this.onerror = this.onload = null
+    cb(new Error('Failed to load ' + this.src), script)
+  }
+}
+
+function ieOnEnd (script, cb) {
+  script.onreadystatechange = function () {
+    if (this.readyState != 'complete' && this.readyState != 'loaded') return
+    this.onreadystatechange = null
+    cb(null, script) // there is no way to catch loading errors in IE8
+  }
+}