javascript string error
Error.prototype.toString = function() {
'use strict';
var obj = Object(this);
if (obj !== this) {
throw new TypeError();
}
var name = this.name;
name = (name === undefined) ? 'Error' : String(name);
var msg = this.message;
msg = (msg === undefined) ? '' : String(msg);
if (name === '') {
return msg;
}
if (msg === '') {
return name;
}
return name + ': ' + msg;
};
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