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Code run within Deno-mode and Node-mode should have access to a
slightly different set of globals. Previously this was done through a
compile time code-transform for Node-mode, but this is not ideal and has
many edge cases, for example Node's globalThis having a different
identity than Deno's globalThis.
This commit makes the `globalThis` of the entire runtime a semi-proxy.
This proxy returns a different set of globals depending on the caller's
mode. This is not a full proxy, because it is shadowed by "real"
properties on globalThis. This is done to avoid the overhead of a full
proxy for all globalThis operations.
The globals between Deno-mode and Node-mode are now properly segregated.
This means that code running in Deno-mode will not have access to Node's
globals, and vice versa. Deleting a managed global in Deno-mode will
NOT delete the corresponding global in Node-mode, and vice versa.
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Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: Aapo Alasuutari <aapo.alasuutari@gmail.com>
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Closes https://github.com/denoland/deno/issues/19510
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This PR restores `node:worker_threads` implementation and test cases
from
[`std@0.175.0/node`](https://github.com/denoland/deno_std/blob/0.175.0/node/worker_threads.ts).
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Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
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This commit shams "performance.markResourceTiming" API by
using a noop function. It is done to provide compatibility with
"npm:undici" package. We should look into actually implementing
this API properly, but I wanted to unblock support for "undici" and
"astro" for now.
Ref https://github.com/denoland/deno/issues/19065
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(#19092)
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Moving some code around in `ext/node` is it's a bit better well defined
and makes it possible for others to embed it.
I expect to see no difference in startup perf with this change.
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