reexport-deferred-ns-evaluation.js

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// |reftest| skip module -- import-defer is not supported

// Copyright (C) 2026 Igalia, S.L. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: sec-resolveexport

description: >

  Re-exported deferred namespace preserves deferred semantics

info: |

  ResolveExport ( _exportName_ )

    1. ...

    1. For each ExportEntry Record _e_ of _module_.[[IndirectExportEntries]], do

      1. If _e_.[[ExportName]] is _exportName_, then

        1. Assert: _e_.[[ModuleRequest]] is not *null*.

        1. Let _importedModule_ be GetImportedModule(_module_, _e_.[[ModuleRequest]]).

        1. If _e_.[[ImportName]] is ~all~, then

          1. Assert: _module_ does not provide the direct binding for this export.

          1. If _e_.[[ModuleRequest]].[[Phase]] is ~defer~, then

            1. Return ResolvedBinding Record { [[Module]]: _importedModule_,

               [[BindingName]]: ~deferred-namespace~ }.

          1. Else,

            1. Assert: _e_.[[Phase]] is ~evaluation~.

            1. Return ResolvedBinding Record { [[Module]]: _importedModule_,

               [[BindingName]]: ~namespace~ }.

flags: [module]

features: [import-defer]

includes: [compareArray.js]

---*/

import { ns } from "./deferred_ns_export_FIXTURE.js";

assert.compareArray(globalThis.evaluations, ["reexport"],

  "deferred module should not be evaluated");

assert.sameValue(ns[Symbol.toStringTag], "Deferred Module",

  "'ns' should be a deferred namespace object");

assert.sameValue(ns.foo, 42);

assert.compareArray(globalThis.evaluations, ["reexport", "dep"],

  "deferred module should be evaluated after property access");

reportCompare(0, 0);