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// @@unscopables checks can call getters.
// The @@unscopables property itself can be a getter.
let hit1 = 0;
let x = "global x";
let env1 = {
x: "env1.x",
get [Symbol.unscopables]() {
hit1++;
return {x: true};
}
};
with (env1)
assertEq(x, "global x");
assertEq(hit1, 1);
// It can throw; the exception is propagated out.
function Fit() {}
with ({x: 0, get [Symbol.unscopables]() { throw new Fit; }})
assertThrowsInstanceOf(() => x, Fit);
// Individual properties on the @@unscopables object can have getters.
let hit2 = 0;
let env2 = {
x: "env2.x",
[Symbol.unscopables]: {
get x() {
hit2++;
return true;
}
}
};
with (env2)
assertEq(x, "global x");
assertEq(hit2, 1);
// And they can throw.
with ({x: 0, [Symbol.unscopables]: {get x() { throw new Fit; }}})
assertThrowsInstanceOf(() => x, Fit);
reportCompare(0, 0);
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