npm / @cloudflare/computer

@cloudflare/computer

What changed in @cloudflare/computer 0.9 to 0.10, from its official release notes, upgrade guides and advisories. Sources checked 2026-11-11.

10 breaking7 new APIs and options4 behavior and defaults1 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

@cloudflare/computer 0.1020 changes

A backend without an explicit id now registers as codemode; saved runs under the old default id are not resumed or returned by pending or getExec.
0.10.0release notes
Replaces WorkerJavaScriptBackend and is imported from @cloudflare/computer/backends/codemode.
0.10.0release notes
Replaces the WorkerJavaScriptBackendOptions type.
0.10.0release notes
Tool-set exec options now use an object containing backends, output, and metadata; the old backend map and execOutput shape is replaced.
0.10.0release notes
To disable the exec tool, configure exec: { backends: {} }; an empty exec object now throws.
0.10.0release notes
The old backend name has no alias; update imports and construction to CodemodeBackend.
0.10.0release notes
Traces now record the backend type as codemode, regardless of its id.
0.10.0release notes
Now requires execution: { id, metadata }, so code constructing host call contexts by hand must provide it.
0.10.0release notes
Now requires metadata, so code constructing pending calls by hand must provide it.
0.10.0release notes

Adds values to ctx once per connection or run scope, and disposes them when that scope ends.
0.10.0release notes
Host module calls receive the run's id and metadata in context.execution.
0.10.0release notes
Creates the experimental codemode:browser host module, letting isolate JavaScript drive an agents' Browser through the same browser functions as browserTool.
0.10.0release notes
Creates experimental host modules whose functions return objects with journaled methods and run-scoped context that can persist across pauses and restarts.
0.10.0release notes
The exec tool can set metadata for each run through its exec options.
0.10.0release notes
Accepts string-record metadata for a run; host modules can read it through context.execution while the run's code cannot.
0.10.0release notes
Lists run metadata with each waiting call.
0.10.0release notes

A host module call can return more than 4,096 values if the response fits the backend's byte limits.
0.10.0release notes
Codemode modules can also take callbacks and return streams and live stubs in runs that do not replay.
0.10.0release notes
Codemode modules can take and return Date, bigint, byte and typed arrays, Headers, and errors with their names and properties.
0.10.0release notes

Stops double-encoding non-ASCII bytes written by redirected byte-oriented commands.
0.10.0release notes

Host and source modules for WorkerJavaScriptBackend that used the ws: prefix now use codemode: instead.
0.9.0release notes

Custom modules now support exporting objects as well as functions.
0.9.0release notes