outerBinding.js - mozsearch

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// |reftest| skip-if(!xulRuntime.shell)

//

// The above skip-if is because global lexicals aren't yet implemented. Remove

// that and the |evaluate| call below once they are.

//

// A class statement creates a mutable lexical outer binding.

class Foo { constructor() { } }

assertEq(typeof Foo, "function");

Foo = 5;

assertEq(Foo, 5);

    class foo { constructor() { } }

    assertEq(typeof foo, "function");

    foo = 4;

    assertEq(foo, 4);

    class PermanentBinding { constructor() { } }

    delete PermanentBinding;

    // That...didn't actually work, right?

    assertEq(typeof PermanentBinding, "function");

evaluate("const globalConstant = 0; var earlyError = true;");

try {

    evaluate("earlyError = false; class globalConstant { constructor() { } }");

} catch (e) {

    if (!(e instanceof SyntaxError))

        throw e;

assertEq(earlyError, true);

function strictEvalShadows() {

    "use strict";

    let x = 4;

    eval(`class x { constructor() { } }

           assertEq(typeof x, "function");

`);

    assertEq(x, 4);

strictEvalShadows()

if (typeof reportCompare === "function")

    reportCompare(0, 0, "OK");