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es-module-shims makes request to browser internal data (blob:...) requiring specific CSP policy #404

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jean553 opened this issue Nov 27, 2023 · 1 comment
Open

es-module-shims makes request to browser internal data (blob:...) requiring specific CSP policy #404

jean553 opened this issue Nov 27, 2023 · 1 comment

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@jean553
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jean553 commented Nov 27, 2023

By loading the library, we can see the browser making some requests to cached data stored on the browser memory: blob:https://our-domain/....

This request is made from es-module-shims.js.

We have very strict CSP policies. Is this call to cache really necessary and is there a way to disable it ?
@guybedford
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Yes, this is necessary, as that is how the polyfill operates in rewriting the specifiers using blob URLs.

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@guybedford @jean553