@robotical/martyblocks
Version:
MartyBlocks based on Scratch for Marty the Robot by Robotical
50 lines (42 loc) • 1.35 kB
JavaScript
;
var GetIntrinsic = require('get-intrinsic');
var IsCallable = require('es-abstract/2024/IsCallable');
var Type = require('es-abstract/2024/Type');
var whichBuiltinType = require('which-builtin-type');
var $TypeError = require('es-errors/type');
var $gPO = GetIntrinsic('%Object.getPrototypeOf%', true);
var $ObjectPrototype = GetIntrinsic('%Object.prototype%');
var hasProto = [].__proto__ === Array.prototype; // eslint-disable-line no-proto
module.exports = function getPrototypeOf(O) {
if (Type(O) !== 'Object') {
throw new $TypeError('Reflect.getPrototypeOf called on non-object');
}
if ($gPO) {
return $gPO(O);
}
if (hasProto) {
// eslint-disable-next-line no-proto
var proto = O.__proto__;
if (proto || proto === null) {
return proto;
}
}
var type = whichBuiltinType(O);
if (type) {
var intrinsic = GetIntrinsic('%' + type + '.prototype%', true);
if (intrinsic) {
return intrinsic;
}
}
if (IsCallable(O.constructor)) {
return O.constructor.prototype;
}
if (O instanceof Object) {
return $ObjectPrototype;
}
/*
* Correctly return null for Objects created with `Object.create(null)` (shammed or native) or `{ __proto__: null}`. Also returns null for
* cross-realm objects on browsers that lack `__proto__` support (like IE <11), but that's the best we can do.
*/
return null;
};