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jest-validate

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jest-validate

Generic configuration validation tool that helps you with warnings, errors and deprecation messages as well as showing users examples of correct configuration.

  • 29.7.0
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27M
decreased by-4.76%
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6
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What is jest-validate?

The jest-validate package is a utility for validating and ensuring that configurations passed to Jest, the JavaScript testing framework, are correct. It checks if the provided configuration object adheres to Jest's expected configurations and provides warnings or errors for any invalid or unknown options. This helps developers to quickly identify issues with their Jest setup.

What are jest-validate's main functionalities?

Validation of configuration objects

This feature allows developers to validate their Jest configuration objects against a schema. It ensures that the configuration provided matches the expected format and values that Jest can work with.

{"validateConfig": require('jest-validate').validateConfig, "config": { "verbose": true }, "exampleConfig": { "verbose": false }}

Customization of validation messages

Developers can provide custom messages for unknown or deprecated options. This helps in guiding the user to correct their configuration with helpful feedback.

{"validateConfig": require('jest-validate').validateConfig, "config": { "unknownOption": true }, "exampleConfig": { "verbose": false }, "options": { "comment": "A custom message for unknownOption" }}

Deprecation warnings

jest-validate can warn users about deprecated configuration options. It provides a mechanism to inform users about the new options they should use instead.

{"validateConfig": require('jest-validate').validateConfig, "config": { "scriptPreprocessor": "<rootDir>/preprocessor.js" }, "exampleConfig": { "transform": {"^.+\\.js$": "<rootDir>/preprocessor.js"} }, "deprecatedConfig": { "scriptPreprocessor": "Please use `transform` instead" }}

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Package last updated on 12 Sep 2023

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