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arturovt
4ea70e36b9
The `patchCallbacks` is used for patching the `document.registerElement` and `customElements.define`. We explicitly wrap the patching code into try-catch since callbacks may be already patched by other web components frameworks (e.g. LWC), and they make those properties non-writable. This means that patching callback will throw an error `cannot assign to read-only property`. See this code as an example: https://github.com/salesforce/lwc/blob/master/packages/@lwc/engine-core/src/framework/base-bridge-element.ts#L180-L186 We don't want to stop the application rendering if we couldn't patch some callback, e.g. `attributeChangedCallback`. PR Close #42546 PR Close #45400