ff-validator

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Table of Contents

1. Install
2. Rules
   1. required
   2. urlHttpsProtocol
3. GutHub

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# Install

            
                npm install ff-validator
            
        

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# Rules

# required

Check the field is valid if it matters

Invalid cases:

1. undefined
2. null
3. false - falsy boolean
4. NaN - not a number
5. [] - empty array
6. "" - empty string

Valid cases:

• true - truthy boolean
• {} - any instance of Object
• 0 / "0" - zero has matter as value
• any other value that will be true in a logical transformation, e.g. !!myValue

Usage

                
                    import { required } from 'ff-validator/dist/rules/required';
                    const rule = required('My custom error message');

                    // invalid cases           // valid cases
                    rule();                    rule(true);
                    rule(null);                rule({});
                    rule(false);               rule(0);
                    rule(NaN);                 rule('0');
                    rule([]);
                    rule('');
                
            

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# urlHttpsProtocol

Check the https:// at the beginning of your URL string

Usage

                
                    import { urlHttpsProtocol } from 'ff-validator/dist/rules/urlHttpsProtocol';
                    const rule = urlHttpsProtocol('My custom error message');

                    // invalid cases               // valid cases
                    rule('http://site.com');       rule('https://site.com');
                    rule('//site.com');
                
            

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# GitHub

https://github.com/ff-validator/ff-validator

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