LANGUAGES Signal 573
Workers RPC now works across Python and JavaScript
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Engineers can now mix Python and JavaScript in distributed systems without writing glue code or schemas. This reduces friction when integrating components written in different languages, particularly for teams with diverse language preferences. The change simplifies cross-language workflows by making remote calls feel like local function calls.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
No schema or serialization code is required to call methods between Python and JavaScript Workers; the RPC system handles type conversion automatically.
Live objects, functions, and structured data can be passed between languages, with exceptions and promises/futures propagated natively.
The RPC implementation runs in-process by default, avoiding network overhead and behaving like a local library call.
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