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CLI for HL7v2

Package Exports

  • @rethinkhealth/hl7v2-cli

Readme

@rethinkhealth/cli

Command line interface to inspect and change HL7v2 files with @rethinlhealth/hl7v2.

Intro

This package is a command line interface (CLI) that you can use in your terminal or in npm scripts and the like to inspect and change Hl7v2 files. This CLI is built around @rethinkhealth/hl7v2, which is an ecosystem of plugins that work with HTML as structured data, specifically ASTs (abstract syntax trees). You can choose from the existing plugins or make your own.

See the monorepo readme for info on what the @rethinkhealth/hl7v2 ecosystem is.

When should I use this?

You can use this package when you want to work with the HL7v2 files in your project from the command line. @rethinkhealth/hl7v2-cli has many options and you can combine it with many plugins, so it should be possible to do what you want. If not, you can always use @rethinkhealth/hl7v2 itself manually in a script.

Install

This package is ESM only. In Node.js (version 16+), install with npm:

npm install @rethinkhealth/hl7v2-cli

Use

Parse siu.hl7v2 and generate JSON with @rethinkhealth/hl7v2-jsonify:

hl7v2 siu.hl7v2 --output

CLI

The interface of @rethinkhealth/hl7v2-cli is explained as follows on its help page (hl7v2 --help):

Usage: hl7v2 [options] [path | glob ...]

  Command line interface to inspect and change HL7v2 messages

Options:

      --[no-]color                        specify color in report (on by default)
      --[no-]config                       search for configuration files (on by default)
  -e  --ext <extensions>                  specify extensions
      --file-path <path>                  specify path to process as
  -f  --frail                             exit with 1 on warnings
  -h  --help                              output usage information
      --[no-]ignore                       search for ignore files (on by default)
  -i  --ignore-path <path>                specify ignore file
      --ignore-path-resolve-from cwd|dir  resolve patterns in `ignore-path` from its directory or cwd
      --ignore-pattern <globs>            specify ignore patterns
      --inspect                           output formatted syntax tree
  -o  --output [path]                     specify output location
  -q  --quiet                             output only warnings and errors
  -r  --rc-path <path>                    specify configuration file
      --report <reporter>                 specify reporter
  -s  --setting <settings>                specify settings
  -S  --silent                            output only errors
      --silently-ignore                   do not fail when given ignored files
      --[no-]stdout                       specify writing to stdout (on by default)
  -t  --tree                              specify input and output as syntax tree
      --tree-in                           specify input as syntax tree
      --tree-out                          output syntax tree
  -u  --use <plugins>                     use plugins
      --verbose                           report extra info for messages
  -v  --version                           output version number
  -w  --watch                             watch for changes and reprocess

Examples:

  # Process `input.hl7v2`
  $ hl7v2 input.hl7v2 -o output.hl7v2

  # Pipe
  $ hl7v2 < input.hl7v2 > output.hl7v2

  # Rewrite all applicable files
  $ hl7v2 . -o

More info on all these options is available at [unified-args][unified-args].

@rethinkhealth/h7l7v2-cli is unified-args preconfigured to:

  • load @rethinkhealth/h7l7v2- plugins
  • search for HL7v2 extensions (.hl7v2, .hl7, .txt)
  • ignore paths found in .hl7v2ignore files
  • load configuration from .hl7v2rc, .hl7v2rc.js, etc files
  • use configuration from hl7v2 fields in package.json files

Security

Use of @rethinkhealth/hl7v2 plugins could open you up to some potential attacks. Carefully assess each plugin and the risks involved in using them.

Contributing

We welcome contributions! Please see our Contributing Guide for more details.

  1. Fork the repository
  2. Create your feature branch (git checkout -b feature/amazing-feature)
  3. Commit your changes (git commit -m 'Add some amazing feature')
  4. Push to the branch (git push origin feature/amazing-feature)
  5. Open a Pull Request

Code of Conduct

To ensure a welcoming and positive environment, we have a Code of Conduct that all contributors and participants are expected to adhere to.

License

Copyright 2025 Rethink Health, SUARL. All rights reserved.

This program is licensed to you under the terms of the MIT License. This program is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the LICENSE file for details.