utils.fetch is a synchronous, read-only GET or HEAD to the channel Base URL
host or the plugin's allowedHosts, through the channel proxy used for
polling. It is available in buildSubmitRequest, the query and batch build
and parse hooks, and buildContentRequest; every other hook throws. Each hook
call gets at most 4 fetches, 15 s per fetch, 30 s in total and 1 MiB per
body. Redirects are returned, not followed. responseType "bytes" returns an
ArrayBuffer for binary data such as a media file header.
While a fetch waits, the runtime gives up its execution slot and the
watchdog pauses. BuildContentRequest now receives the request context, and
the media proxy shares the plugin request header rules.
Task plugins now run on github.com/Calcium-Ion/moejs v0.1.0-alpha.3
instead of Sobek, and the host utils are ported to it. The plugin API is
unchanged. Code compiled from strings is no longer allowed: eval and the
Function constructors throw an EvalError.
Hooks receive host values without defensive copies. The engine converts
an object or array when the hook first reads it and never writes
JavaScript changes back to the host value. Stored protocol state and task
views are passed as raw JSON and parsed inside the runtime instead of
being decoded into Go maps first. An idle runtime drops its references to
the last call's arguments.
Whether an optional hook is exported is decided once when the plugin
loads, so checking for it no longer takes an execution slot.
Usage validation returns the normalized facts in a new map instead of
writing into the hook result, so a hook that returns the request body no
longer changes it. The request descriptor is copied instead of being
round-tripped through JSON.
CaIon