6b5eaff0ae
Test that destructured parameter bindings correctly do NOT receive local indices when defeated by closure capture, direct eval, with statements, or arguments object access.
30 lines
753 B
JavaScript
30 lines
753 B
JavaScript
// Destructured parameter captured by a closure loses its local index.
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function captured_by_closure({ x }) {
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return function () {
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return x;
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};
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}
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// Direct eval in the function defeats local indices.
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function eval_defeats({ a, b }) {
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eval("");
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return a + b;
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}
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// `with` statement defeats local indices for identifiers used inside.
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function with_defeats({ x }, obj) {
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with (obj) {
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return x;
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}
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}
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// Accessing `arguments` object prevents parameter locals.
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function arguments_access({ x }) {
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return arguments[0];
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}
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// Plain + destructured: only plain should keep [argument:N] when
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// no defeating conditions apply within the same function.
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function mixed_no_defeat(first, [a, b]) {
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return first + a + b;
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}
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