ajv/spec/custom_rules/range_with_errors.jst

{{
  var $data = 'data' + (it.dataLevel || '')
    , $min = it.schema['x-range'][0]
    , $max = it.schema['x-range'][1]
    , $exclusive = !!it.schema.exclusiveRange
    , $gt = $exclusive ? '>' : '>='
    , $lt = $exclusive ? '<' : '<='
    , $lvl = it.level
    , $err = 'err' + $lvl;
}}

var minOk{{=$lvl}} = {{=$data}} {{=$gt}} {{=$min}};
var valid{{=$lvl}} = minOk{{=$lvl}} && {{=$data}} {{=$lt}} {{=$max}};

if (!valid{{=$lvl}}) {
  var {{=$err}};
  if (minOk{{=$lvl}}) {
    {{=$err}} = {
      keyword: 'x-range',
      message: 'should be {{=$lt}} {{=$max}}',
      params: {
        comparison: '{{=$lt}}',
        limit: {{=$max}},
        exclusive: {{=$exclusive}}
      }
    };
  } else {
    {{=$err}} = {
      keyword: 'x-range',
      message: 'should be {{=$gt}} {{=$min}}',
      params: {
        comparison: '{{=$gt}}',
        limit: {{=$min}},
        exclusive: {{=$exclusive}}
      }
    };
  }

  errors++;
  if (vErrors) vErrors[vErrors.length] = {{=$err}};
  else vErrors = [{{=$err}}];
}