boundaryFor
@forge/monorepo / backend/src / boundaryFor
Function: boundaryFor()
boundaryFor(
parts):string
Defined in: backend/src/toolkit/mime.ts:120
A boundary that depends only on the message.
Deterministic so email_compose_preview and email_send produce the same bytes, and content-derived so two
different messages do not share one. The loop rules out the remaining case where the chosen boundary appears
inside a part — astronomically unlikely with a hash, and cheaper to exclude than to reason about.
Parameters
parts
readonly string[]
Returns
string