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Expose promise-based script loading for hosts with asynchronous resources and a synchronous importScripts adapter for bundles with packaged chunks. Keep resource lookup host-owned and test resolution, ordering, and failure propagation. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
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[Commented by Copilot on behalf of @bghgary] Closing while we reconsider the API. This proposal mixes host script loading with a Web Worker-specific compatibility shim without defining how dynamic imports should work across the supported engines. |
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[Created by Copilot on behalf of @bghgary]
Context
Hosts that package JavaScript as resources need to load deferred scripts without opening an unrestricted file or network path. Some hosts can provide source synchronously; others can retrieve it only asynchronously. Chakra does not parse native
import()syntax, so a bundler must transform source-level imports for that engine.Compatibility
The optional
loadScript(name)contract accepts either immediate or asynchronously resolved source. The separateimportScriptscontract supports bundlers whose chunk-loading mode requires synchronous, already-packaged resources. Webpack's built-inimport-scriptsmode cannot awaitloadScript; an async-only host needs an asynchronous bundler chunk loader. Browser builds can retain URL-based chunk loading. Neither contract changes native ES module parsing.