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84 lines
3.9 KiB
JavaScript
84 lines
3.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dynamic-import/ns-prevent-extensions-object.case
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// - src/dynamic-import/namespace/await.template
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/*---
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description: The [[PreventExtensions]] internal method returns `true` (value from await resolving)
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esid: sec-finishdynamicimport
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features: [dynamic-import]
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flags: [generated, async]
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info: |
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Runtime Semantics: FinishDynamicImport ( referencingScriptOrModule, specifier, promiseCapability, completion )
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1. If completion is an abrupt completion, ...
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2. Otherwise,
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...
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d. Let namespace be GetModuleNamespace(moduleRecord).
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e. If namespace is an abrupt completion, perform ! Call(promiseCapability.[[Reject]], undefined, « namespace.[[Value]] »).
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f. Otherwise, perform ! Call(promiseCapability.[[Resolve]], undefined, « namespace.[[Value]] »).
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Runtime Semantics: GetModuleNamespace ( module )
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...
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3. Let namespace be module.[[Namespace]].
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4. If namespace is undefined, then
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a. Let exportedNames be ? module.GetExportedNames(« »).
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b. Let unambiguousNames be a new empty List.
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c. For each name that is an element of exportedNames, do
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i. Let resolution be ? module.ResolveExport(name, « »).
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ii. If resolution is a ResolvedBinding Record, append name to unambiguousNames.
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d. Set namespace to ModuleNamespaceCreate(module, unambiguousNames).
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5. Return namespace.
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ModuleNamespaceCreate ( module, exports )
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...
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4. Let M be a newly created object.
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5. Set M's essential internal methods to the definitions specified in 9.4.6.
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7. Let sortedExports be a new List containing the same values as the list exports where the
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values are ordered as if an Array of the same values had been sorted using Array.prototype.sort
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using undefined as comparefn.
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8. Set M.[[Exports]] to sortedExports.
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9. Create own properties of M corresponding to the definitions in 26.3.
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10. Set module.[[Namespace]] to M.
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11. Return M.
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26.3 Module Namespace Objects
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A Module Namespace Object is a module namespace exotic object that provides runtime
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property-based access to a module's exported bindings. There is no constructor function for
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Module Namespace Objects. Instead, such an object is created for each module that is imported
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by an ImportDeclaration that includes a NameSpaceImport.
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In addition to the properties specified in 9.4.6 each Module Namespace Object has the
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following own property:
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26.3.1 @@toStringTag
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The initial value of the @@toStringTag property is the String value "Module".
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This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.
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Module Namespace Exotic Objects
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A module namespace object is an exotic object that exposes the bindings exported from an
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ECMAScript Module (See 15.2.3). There is a one-to-one correspondence between the String-keyed
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own properties of a module namespace exotic object and the binding names exported by the
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Module. The exported bindings include any bindings that are indirectly exported using export *
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export items. Each String-valued own property key is the StringValue of the corresponding
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exported binding name. These are the only String-keyed properties of a module namespace exotic
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object. Each such property has the attributes { [[Writable]]: true, [[Enumerable]]: true,
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[[Configurable]]: false }. Module namespace objects are not extensible.
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---*/
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async function fn() {
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const ns = await import('./empty_FIXTURE.js');
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// This invocation should not throw an exception
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Object.preventExtensions(ns);
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assert.sameValue(Reflect.preventExtensions(ns), true);
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}
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fn().then($DONE, $DONE).catch($DONE);
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