4da20cce0e
This shim redirects Cu.import("foo.jsm") to ChromeUtils.importModule("foo.mjs")
if foo.jsm is already renamed to foo.mjs.
This de-optimizes ESM component's global `var`s, in order to expose all
variables in `ModuleEnvironmentObject`, and return those variables from
`Cu.improt`'s return value.
In contrast to normal Cu.import, the return value of shim version exposes
all non-exported lexical variables.
Bug 1768060 patch aligns the normal Cu.import to expose them as well,
so that `this.foo = foo;` hack can be removed in bug 1610653.
Once not-in-tree `Cu.import` consumers are gone and `Cu.import` is removed,
this shim and the de-optimization for the `var` can be removed.
Differential Revision: https://phabricator.services.mozilla.com/D145784
31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_loader_ModuleEnvironmentProxy_h
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#define mozilla_loader_ModuleEnvironmentProxy_h
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#include "js/TypeDecls.h" // JSContext, JSObject
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#include "js/RootingAPI.h" // JS::Handle
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namespace mozilla {
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namespace loader {
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// Create an object that works in the same way as global object returned by
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// `Cu.import`. This proxy exposes all global variables, including lexical
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// variables.
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//
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// This is a temporary workaround to support not-in-tree code that depends on
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// `Cu.import` return value.
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//
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// This will eventually be removed once ESM-ification finishes.
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JSObject* CreateModuleEnvironmentProxy(JSContext* aCx,
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JS::Handle<JSObject*> aModuleObj);
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} // namespace loader
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} // namespace mozilla
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#endif // mozilla_loader_ModuleEnvironmentProxy_h
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