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CONTRIBUTING.md

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JSON Schema

You can contribute in a variety of ways. For a detailed tutorial, read Scott Addie's Community-Driven JSON Schemas in Visual Studio 2015 blog post.

  1. Submit new JSON schema files
  2. Add a JSON schema file to the catalog
  3. Modify/update existing schema files

Versioning of schema files are handled by modifying the file name to include the version number: myschema-1.2.json

When uploading a new schema file, make sure it targets a file that is commonly used or has potential for broad uptake.

If you don't have Visual Studio (using macOS or Linux?), you can check your modifications are fine by running:

make

Adding to catalog

After adding schema files, register them in schema catalog by adding an entry corresponding to your schema:

{
    "name": "Friendly schema name",
    "description": "Schema description",
    "fileMatch": [
        "list of well-known filenames matching schema"
    ],
    "url": "https://json.schemastore.org/<schemaName>.json"
}

Best practices

  • Use the lowest possible schema draft needed, preferably Draft v4, to ensure interoperability with as many supported editors, IDEs and parsers as possible.
  • Add test files.
  • Add "additionalProperties": true/false to each "properties": {}

Adding tests (for local schemas only)

To make sure that files are validated against your schema correctly (we strongly suggest adding at least one before creating a pull request):

  1. Create a subfolder in src/test named as your schema file
  2. Create one or more .json, .yml or .yaml files in that folder
  3. Run npm run build

If the build succeeds, your changes are valid and you can safely create a PR.

Adding negative tests

To make sure that invalid files fail to validate against your schema, use a subfolder in src/negative_test/ instead.

Self-hosting schemas

If you wish to retain full control over your schema definition, simply register it in the schema catalog by providing a url pointing to the self-hosted schema file to the entry. Example on how to handle multiple schema versions.

JSON formatter

This project contains an .editorconfig file. If your IDE or code editor doesn't natively support it, please install the EditorConfig plugin.

Validation mode

SchemaStore supports three types of schema validation mode.