1735474 - [meta] Implement `scripting.executeScript()`

Status: NEW

(WebExtensions :: General, enhancement, P3)

Description

[William Durand [:willdurand]]

Bug 1687764 is about implementing the entire MV3 API. Let's start small and focus on executScript() only with this bug: https://developer.chrome.com/docs/extensions/reference/scripting/#method-executeScript

Comment 1

[William Durand [:willdurand]]

Attachment: Bug 1735474 - Implement `browser.scripting.executeScript()`. r=robwu

Comment 2

[William Durand [:willdurand]]

One thing to maybe consider in the future, making target optional and defaulting to the active tab: https://bugs.chromium.org/p/chromium/issues/detail?id=1194519&q=component%3APlatform%3EExtensions%3EAPI

Comment 3

[Rob Wu [:robwu]]

FYI relevant design docs from Chrome's side:

• https://bugs.chromium.org/p/chromium/issues/detail?id=1144839
• https://docs.google.com/document/d/1l75bKG3ecO7xJPzlnpaXQUhEy9wR1XcC2srwyB6E-aE/edit
• https://docs.google.com/document/d/1C68-UiKmG7TUN5xVpdw7eSiHRTQEjlGB2-svenaIm4s/edit

It seems that the documents are not accounting for non-serializable or non-callable functions. E.g.:

• class X{} = cannot be called, only with new.
• Math.min = function() { [native functon] } cannot be serialized.
• new Proxy(function() {}, {}); = Proxy around function.
• a = {async prop(){}, prop2() {}}; -> a.prop and a.prop2 cannot be called after trivial serialization ((async prop(){})() and (prop2(){})() are syntactically invalid)

The docs do account for cases where func.toString has been overridden with a custom implementation.
In practice, Xray vision in Firefox ensures that func.toString uses the native toString implementation, but it would be good to have unit tests nevertheless. Consider making that part of the initial patch, or a follow-up bug.

Comment 4

[Phabricator Automation]

Comment on attachment 9245672 [details]
Bug 1735474 - Implement browser.scripting.executeScript(). r=robwu

Revision D128339 was moved to bug 1740601. Setting attachment 9245672 [details] to obsolete.

Comment 5

[William Durand [:willdurand]]

For scripting.executeScript(), we currently have a limitation around the world parameter. It only supports "ISOLATED", which is the default (see Bug 1759932). Adding support for other execution worlds is tracked in Bug 1736575.