Version 1

[yaffs-website] / node_modules / core-js / library / modules / _classof.js

diff --git a/node_modules/core-js/library/modules/_classof.js b/node_modules/core-js/library/modules/_classof.js
new file mode 100644 (file)
index 0000000..dab3a80
--- /dev/null
+++ b/node_modules/core-js/library/modules/_classof.js
@@ -0,0 +1,23 @@
+// getting tag from 19.1.3.6 Object.prototype.toString()
+var cof = require('./_cof')
+  , TAG = require('./_wks')('toStringTag')
+  // ES3 wrong here
+  , ARG = cof(function(){ return arguments; }()) == 'Arguments';
+
+// fallback for IE11 Script Access Denied error
+var tryGet = function(it, key){
+  try {
+    return it[key];
+  } catch(e){ /* empty */ }
+};
+
+module.exports = function(it){
+  var O, T, B;
+  return it === undefined ? 'Undefined' : it === null ? 'Null'
+    // @@toStringTag case
+    : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T
+    // builtinTag case
+    : ARG ? cof(O)
+    // ES3 arguments fallback
+    : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;
+};
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