mat3ra-mode 2026.3.4.post0

MOdel and method DEfinitions

mode

MOdel DEfinitions in JS/TS/Py - houses entity definitions for:

• Method - See Method Overview
• Model - See Model Overview

Installation

For usage within a JavaScript project:

npm install @mat3ra/mode

For development:

git clone https://github.com/Exabyte-io/mode.git

Contribution

This repository is an open-source work-in-progress and we welcome contributions.

We regularly deploy the latest code containing all accepted contributions online as part of the Mat3ra.com platform, so contributors will see their code in action there.

See ESSE for additional context regarding the data schemas used here.

Useful commands for development:

# run linter without persistence
npm run lint

# run linter and save edits
npm run lint:fix

# compile the library
npm run transpile

# run tests
npm run test

How to Add New Models and Methods

!NOTE: this section is moved to @mat3ra/standata.

The list of model and method entities is compiled from Yaml assets located in the ./assets directory using the build_entities.js script. The assets processed by this script usually involve custom Yaml types such as !combine to generate several entity configurations at once.

A new model or method may be added either by extending parameters of an existing entity or by adding a new asset file such as the following:

!combine
name:
  template: 'Model{{ "-" + parameters.example }}' # set the model name using a template

# Loop over parameters to create combinations
forEach:
  - !parameter
    key: parameters.example # path of where to set the property
    values: ["A", "B", "C"] # values to iterate over
    isOptional: true

# static configuration (same for all created entities
config:
  tags:
    - example_model
    - tutorial
  schema: !esse 'schema-id-placeholder' # add a schema using the !esse type to validate each configuration 

The above asset file will create four model configurations, "Model-A", "Model-B", "Model-C", and "Model". The latter entity is created due to the isOptional flag of the example parameter. There are a few more options available to customize the entity asset, for instance, the !combine type has an exclusions property where conflicting pairs of entity properties can be defined, so that combinations of those will be avoided.

For more examples, please see the asset files in ./assets or code.js for the definition of Yaml types such as !combine or !parameter.