Module transfer 

Envelope encoding shared by the page and the worker: every postMessage is a plain object whose fields are the crate::wire::MESSAGE_KEY control message or the crate::wire::APP_KEY application message, plus optional crate::wire::ATTACHMENTS_KEY binary payloads whose buffers ride the transfer list.

Functions

app_value_from

Decodes the application message riding data, if any.

attach

Adds named binary payloads to envelope and their buffers to transfer. Returns false when the attachment bag could not be written.

attachments_from

Decodes the named binary attachments riding data, empty when none did.

control_value_from

Decodes the control message riding data, if any.

envelope_with

Builds an envelope carrying message under key, or None when the message does not serialize.