Function selectMessageToPgsExport

selectMessageToPgsExport(
source: string,
): { segments: PgsSegmentExport[]; switchAttr: string } | null
If source is a classifiable .match message, returns PGS attributes and per-variant segments; otherwise null (caller falls back to plain XLIFF).
Parameters
- source: string
Returns { segments: PgsSegmentExport[]; switchAttr: string } | null
- Defined in src/lib/pgs-mf2.ts:263