Edit - coerce.def

Edit: coerce.def

{{## def.coerceType:
  {{
    var $dataType = 'dataType' + $lvl
      , $coerced = 'coerced' + $lvl;
  }}
  var {{=$dataType}} = typeof {{=$data}};
  var {{=$coerced}} = undefined;

{{? it.opts.coerceTypes == 'array' }}
    if ({{=$dataType}} == 'object' && Array.isArray({{=$data}}) && {{=$data}}.length == 1) {
      {{=$data}} = {{=$data}}[0];
      {{=$dataType}} = typeof {{=$data}};
      if ({{=it.util.checkDataType(it.schema.type, $data, it.opts.strictNumbers)}}) {{=$coerced}} = {{=$data}};
    }
  {{?}}

if ({{=$coerced}} !== undefined) ;
  {{~ $coerceToTypes:$type:$i }}
    {{? $type == 'string' }}
      else if ({{=$dataType}} == 'number' || {{=$dataType}} == 'boolean')
        {{=$coerced}} = '' + {{=$data}};
      else if ({{=$data}} === null) {{=$coerced}} = '';
    {{?? $type == 'number' || $type == 'integer' }}
      else if ({{=$dataType}} == 'boolean' || {{=$data}} === null
          || ({{=$dataType}} == 'string' && {{=$data}} && {{=$data}} == +{{=$data}}
          {{? $type == 'integer' }} && !({{=$data}} % 1){{?}}))
        {{=$coerced}} = +{{=$data}};
    {{?? $type == 'boolean' }}
      else if ({{=$data}} === 'false' || {{=$data}} === 0 || {{=$data}} === null)
        {{=$coerced}} = false;
      else if ({{=$data}} === 'true' || {{=$data}} === 1)
        {{=$coerced}} = true;
    {{?? $type == 'null' }}
      else if ({{=$data}} === '' || {{=$data}} === 0 || {{=$data}} === false)
        {{=$coerced}} = null;
    {{?? it.opts.coerceTypes == 'array' && $type == 'array' }}
      else if ({{=$dataType}} == 'string' || {{=$dataType}} == 'number' || {{=$dataType}} == 'boolean' || {{=$data}} == null)
        {{=$coerced}} = [{{=$data}}];
    {{?}}
  {{~}}
  else {
    {{# def.error:'type' }}
  }

if ({{=$coerced}} !== undefined) {
    {{# def.setParentData }}
    {{=$data}} = {{=$coerced}};
    {{? !$dataLvl }}if ({{=$parentData}} !== undefined){{?}}
      {{=$parentData}}[{{=$parentDataProperty}}] = {{=$coerced}};
  }
#}}

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