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Work around firefox webextensions bug #249

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@DCNick3 DCNick3 commented Aug 29, 2022

Importing gloo_timers in firefox webextension's content script results in an error: LinkError: import object field '__wbg_clearTimeout_65417660fe82f08d' is not a Function

It actually seems to be a firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1787770

This can simply be worked around by refering to timer functions using window object (setInterval -> window.setInterval) which this PR does. I do not think this would impact users outside of webextensions in any way, as window.setInterval and setInterval are the same functions in usual context (but apparently not in content scripts...)

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DCNick3 commented Aug 29, 2022

Well, looks like this work around is not good enough. While the wasm module does instantiate fine, it still raises an error TypeError: 'clearTimeout' called on an object that does not implement interface Window. when the function is actually invoked.

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DCNick3 commented Aug 29, 2022

Now this should work. Instead of using window object to refer to the function I make wasm-bindgen generate a wrapper around the desired function by marking it with catch. This way wasm module does not error out on instantiation and is actually able to use those APIs

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It seems as a fix for the Firefox bug is underway. I would say we shouldn't merge this and let Firefox handle it.

kmusick added a commit to kmusick/uuid that referenced this pull request Jun 21, 2023
…bAssembly.Instance(): Import uuid-rs#9 module="./index_bg.js" function="__wbg_now_dc6f7ce2227b5592" error: function import requires a callable"

Similar issue: rustwasm/gloo#249
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