IOTConnect-Web/node_modules/ext/global-this/implementation.js
2024-05-09 09:49:52 +08:00

32 lines
1.0 KiB
JavaScript

var naiveFallback = function () {
if (typeof self === "object" && self) return self;
if (typeof window === "object" && window) return window;
throw new Error("Unable to resolve global `this`");
};
module.exports = (function () {
if (this) return this;
// Unexpected strict mode (may happen if e.g. bundled into ESM module)
// Thanks @mathiasbynens -> https://mathiasbynens.be/notes/globalthis
// In all ES5+ engines global object inherits from Object.prototype
// (if you approached one that doesn't please report)
try {
Object.defineProperty(Object.prototype, "__global__", {
get: function () { return this; },
configurable: true
});
} catch (error) {
// Unfortunate case of Object.prototype being sealed (via preventExtensions, seal or freeze)
return naiveFallback();
}
try {
// Safari case (window.__global__ is resolved with global context, but __global__ does not)
if (!__global__) return naiveFallback();
return __global__;
} finally {
delete Object.prototype.__global__;
}
})();