required keyword for empty string

[soulcm]

What version of Ajv are you using? Does the issue happen if you use the latest version?

Ajv options object

{
  allErrors: true,
  jsonPointers: false, 
  coerceTypes: true,
  validateSchema: false
}

JSON Schema

{
  "type": "object",
  "properties": {
    "test": {
      "type": "string"
    }
  },
  "required": ["test"]
}

Sample data

{
  "test": ""
}

Your code

  ajv.validate(schema, data)
  console.log(ajv.errors)

Validation result, data AFTER validation, error messages

  the ajv.erros is null

What results did you expect?
how can I validate the empty string to use required keyword, or another solution

[epoberezkin]

You can use other JSON schema keywords, e. g. minLength for strings.

[m-jahanbakhsh]

Unfortunately, if someone fills the field with spaces it will be valid because space counts as a character.
you can use addKeyword method for check isNotEmpty