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Allow reloadExtension() to soft fail #29042

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dreamofabear
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@dreamofabear dreamofabear commented Jun 25, 2020

Fixes #28582 and b/158855528.

@dreamofabear dreamofabear requested review from jridgewell and removed request for kristoferbaxter June 25, 2020 18:53
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Can we also add a protection against evaluating a second script of the same extension?

);
if (!els.length) {
const TAG = 'reloadExtension';
user().warn(
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Let's make this an error

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There's already a different error for this: Error: amp-fit-text is already registered. The script tag for amp-fit-text is likely included twice in the page.

Happens in custom-element-registry.js when we try to register a CE twice.

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That happens too late, though, since any side-effects in the code can already execute. I think we need an earlier check in runtime.js when we're processing the pushed ExtensionPayload.

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Right and it doesn't cover non-CE extensions. I guess we have a similar check for templates. #29050

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This got off topic from the request. Let's make this an error, not a warn.

We can solve the escape hatch in a follow up.

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🚨 Error: Cannot read property 'src' of undefined
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