Version 1

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

diff --git a/node_modules/core-js/library/modules/_set-proto.js b/node_modules/core-js/library/modules/_set-proto.js
new file mode 100644 (file)
index 0000000..8d5dad3
--- /dev/null
+++ b/node_modules/core-js/library/modules/_set-proto.js
@@ -0,0 +1,25 @@
+// Works with __proto__ only. Old v8 can't work with null proto objects.
+/* eslint-disable no-proto */
+var isObject = require('./_is-object')
+  , anObject = require('./_an-object');
+var check = function(O, proto){
+  anObject(O);
+  if(!isObject(proto) && proto !== null)throw TypeError(proto + ": can't set as prototype!");
+};
+module.exports = {
+  set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line
+    function(test, buggy, set){
+      try {
+        set = require('./_ctx')(Function.call, require('./_object-gopd').f(Object.prototype, '__proto__').set, 2);
+        set(test, []);
+        buggy = !(test instanceof Array);
+      } catch(e){ buggy = true; }
+      return function setPrototypeOf(O, proto){
+        check(O, proto);
+        if(buggy)O.__proto__ = proto;
+        else set(O, proto);
+        return O;
+      };
+    }({}, false) : undefined),
+  check: check
+};
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