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test_function_scope.js
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test_function_scope.js
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// Test that window/globalThis remain global inside functions
console.log("=== Global Scope ===");
globalThis.globalVar = "I am global";
console.log("globalThis.globalVar:", globalThis.globalVar);
console.log("\n=== Inside Regular Function ===");
function testRegularFunc() {
console.log("Inside function, globalThis.globalVar:", globalThis.globalVar);
console.log("Inside function, window.globalVar:", window.globalVar);
// Set a new property from inside the function
window.fromFunction = "set from inside function";
globalThis.alsoFromFunction = "also from inside";
// Test that window/globalThis are the same
console.log("Inside function, window === globalThis:", window === globalThis);
}
testRegularFunc();
console.log("After function, window.fromFunction:", window.fromFunction);
console.log("After function, globalThis.alsoFromFunction:", globalThis.alsoFromFunction);
console.log("\n=== Inside Arrow Function ===");
const testArrowFunc = () => {
console.log("Arrow function, globalThis.globalVar:", globalThis.globalVar);
console.log("Arrow function, window.globalVar:", window.globalVar);
window.fromArrow = "from arrow function";
};
testArrowFunc();
console.log("After arrow, window.fromArrow:", window.fromArrow);
console.log("\n=== Inside Nested Function ===");
function outer() {
console.log("Outer function, globalThis.globalVar:", globalThis.globalVar);
function inner() {
console.log("Inner function, globalThis.globalVar:", globalThis.globalVar);
console.log("Inner function, window.globalVar:", window.globalVar);
window.fromNested = "from nested function";
}
inner();
}
outer();
console.log("After nested, window.fromNested:", window.fromNested);
console.log("\n=== Inside Constructor ===");
function MyClass() {
console.log("Constructor, globalThis.globalVar:", globalThis.globalVar);
console.log("Constructor, window.globalVar:", window.globalVar);
console.log("Constructor, this === window:", this === window);
console.log("Constructor, this === globalThis:", this === globalThis);
window.fromConstructor = "from constructor";
}
new MyClass();
console.log("After constructor, window.fromConstructor:", window.fromConstructor);
console.log("\n=== Inside Method ===");
const obj = {
method: function() {
console.log("Method, globalThis.globalVar:", globalThis.globalVar);
console.log("Method, window.globalVar:", window.globalVar);
console.log("Method, this === window:", this === window);
console.log("Method, this === globalThis:", this === globalThis);
window.fromMethod = "from method";
}
};
obj.method();
console.log("After method, window.fromMethod:", window.fromMethod);
console.log("\n=== All tests passed! ===");

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