Installation

@cosyte/deid is a TypeScript library for Node.js with zero third-party runtime dependencies (every cryptographic primitive comes from Node's built-in node:crypto). It ships dual ESM + CJS builds with per-condition type declarations, so it works from either module system without configuration.

Status: 0.1, published to npm. The command below installs the current release. npm view @cosyte/deid version is the authority on which one that is.

Prerequisites

• Node.js 22 or later, tested on 22, 24, and 26 (the whole @cosyte/* suite targets ES2023).
• A package manager: pnpm, npm, or yarn.

Install

npm install @cosyte/deid

Install the parser for each format you transform

The root entry point is the format-agnostic core. Each format adapter is a subpath export that reads the model of the matching Cosyte parser, which is an optional peer dependency: install the ones for the formats you handle, and nothing else is pulled in.

Format	Import from	Install beside it
HL7 v2	@cosyte/deid/hl7	@cosyte/hl7
C-CDA	@cosyte/deid/ccda	@cosyte/ccda
FHIR R4	@cosyte/deid/fhir	@cosyte/fhir
X12 EDI	@cosyte/deid/x12	@cosyte/x12
NCPDP Telecom	@cosyte/deid/ncpdp	@cosyte/ncpdp
DICOM	@cosyte/deid/dicom	@cosyte/dicom

npm install @cosyte/deid @cosyte/hl7

Smoke test

Confirm the package resolves and its output label is the honest one:

import { OUTPUT_LABEL } from "@cosyte/deid";

OUTPUT_LABEL; // => "Safe-Harbor-transformed per the configured policy"

Head to the Quickstart to de-identify a model.