The @istanbuljs/schema package provides JSON schemas for the configuration options of various IstanbulJS libraries. These schemas are used to validate and document the expected format and types of configuration objects. This can be particularly useful for developers integrating IstanbulJS tools into their projects, ensuring they configure the tools correctly according to the schema definitions.

What are @istanbuljs/schema's main functionalities?

Validation of nyc configuration

This code sample demonstrates how to use the @istanbuljs/schema package to validate an nyc configuration object. It uses the Ajv library to compile and validate the configuration against the schema.

const Ajv = require('ajv');
const ajv = new Ajv();
const nycConfigSchema = require('@istanbuljs/schema').nycConfig;
const validate = ajv.compile(nycConfigSchema);
const valid = validate({
  'check-coverage': true,
  'per-file': true,
  lines: 90,
  functions: 90,
  branches: 90,
  statements: 90
});
if (!valid) console.log(validate.errors);

Other packages similar to @istanbuljs/schema

Readme

Source

@istanbuljs/schema

Schemas describing various structures used by nyc and istanbuljs

Usage

const {nyc} = require('@istanbuljs/schema').defaults;

console.log(`Default exclude list:\n\t* ${nyc.exclude.join('\n\t* ')}`);

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Last updated on 13 Feb 2021

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