Utilities for the @signpdf packages.
npm install @signpdf/utilsfor 
Used by the other @signpdf packages internally. Additionally, needed for PAdES compliant signatures"
``js
import { plainAddPlaceholder } from '@signpdf/placeholder-plain';
import { SUBFILTER_ETSI_CADES_DETACHED } from '@signpdf/utils';
const pdfToSign = plainAddPlaceholder({
...,
subFilter: SUBFILTER_ETSI_CADES_DETACHED,
});
``
* Feel free to copy and paste any part of this code. See its defined Purpose.