ladybird/Userland/Libraries/LibJS/Tests/let-scoping.js

test("let scoping", () => {
    let i = 1;
    {
        let i = 3;
        expect(i).toBe(3);
    }
    expect(i).toBe(1);

    {
        const i = 2;
        expect(i).toBe(2);
    }
    expect(i).toBe(1);
});
LibJS: Convert some top-level tests to the new system First test conversions! These look really good :) 2020-07-04 00:39:25 +03:00			`test("let scoping", () => {`
LibJS: Indent tests with 4 spaces instead of 2 2020-07-06 17:37:45 +03:00			`let i = 1;`
			`{`
			`let i = 3;`
			`expect(i).toBe(3);`
			`}`
			`expect(i).toBe(1);`
LibJS: Hoist variable declarations to the nearest relevant scope "var" declarations are hoisted to the nearest function scope, while "let" and "const" are hoisted to the nearest block scope. This is done by the parser, which keeps two scope stacks, one stack for the current var scope and one for the current let/const scope. When the interpreter enters a scope, we walk all of the declarations and insert them into the variable environment. We don't support the temporal dead zone for let/const yet. 2020-04-13 17:42:54 +03:00
LibJS: Indent tests with 4 spaces instead of 2 2020-07-06 17:37:45 +03:00			`{`
			`const i = 2;`
			`expect(i).toBe(2);`
			`}`
			`expect(i).toBe(1);`
LibJS: Convert some top-level tests to the new system First test conversions! These look really good :) 2020-07-04 00:39:25 +03:00			`});`