diff options
Diffstat (limited to 'node_modules/core-js/modules/_classof.js')
-rw-r--r-- | node_modules/core-js/modules/_classof.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/_classof.js b/node_modules/core-js/modules/_classof.js new file mode 100644 index 000000000..dab3a80f1 --- /dev/null +++ b/node_modules/core-js/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; +};
\ No newline at end of file |