Features

• Supports both strict and truthy boolean validation
• Multi-language support (English, Spanish, French, German)
• Custom mapping for boolean values
• Case-sensitive and case-insensitive options
• Configurable null value handling
• Option to convert non-boolean values
• Custom error messages
• Default value setting

Installation

To install the plugin, run the following command:

npm install @flatfile/plugin-validate-boolean

Example Usage

import { validateBoolean } from '@flatfile/plugin-validate-boolean';

listener.use(
  validateBoolean({
    fields: ['isActive', 'hasSubscription'],
    validationType: 'truthy',
    language: 'en',
    handleNull: 'false',
    convertNonBoolean: true
  }
));

Configuration

The BooleanValidator function accepts a configuration object with the following properties:

• fields: An array of field names to validate
• validationType: 'strict' or 'truthy'
• customMapping: A custom mapping of string values to boolean
• caseSensitive: Whether the validation should be case-sensitive
• handleNull: How to handle null values ('error', 'false', 'true', or 'skip')
• convertNonBoolean: Whether to convert non-boolean values to boolean
• language: The language for predefined mappings ('en', 'es', 'fr', 'de')
• customErrorMessages: Custom error messages for different scenarios
• defaultValue: A default value to use for invalid inputs

Behavior

1. Strict Validation: Only accepts 'true', 'false', true, or false as valid inputs.
2. Truthy Validation: Accepts various representations of true/false, including language-specific terms.
3. Null Handling: Configurable behavior for null or undefined values.
4. Non-Boolean Conversion: Option to convert non-boolean values to boolean.
5. Error Handling: Adds errors or info messages to the record for invalid inputs.
6. Default Value: Option to set a default value for invalid inputs instead of raising an error.

The plugin can be used either as a RecordHook or as an external constraint, providing flexibility in integration with your Flatfile setup.