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'use strict';
module.exports = function applyDefaultsToPOJO(doc, schema) {  const paths = Object.keys(schema.paths);  const plen = paths.length;
  for (let i = 0; i < plen; ++i) {    let curPath = '';    const p = paths[i];
    const type = schema.paths[p];    const path = type.splitPath();    const len = path.length;    let doc_ = doc;    for (let j = 0; j < len; ++j) {      if (doc_ == null) {        break;      }
      const piece = path[j];      curPath += (!curPath.length ? '' : '.') + piece;
      if (j === len - 1) {        if (typeof doc_[piece] !== 'undefined') {          if (type.$isSingleNested) {            applyDefaultsToPOJO(doc_[piece], type.caster.schema);          } else if (type.$isMongooseDocumentArray && Array.isArray(doc_[piece])) {            doc_[piece].forEach(el => applyDefaultsToPOJO(el, type.schema));          }
          break;        }
        const def = type.getDefault(doc, false, { skipCast: true });        if (typeof def !== 'undefined') {          doc_[piece] = def;
          if (type.$isSingleNested) {            applyDefaultsToPOJO(def, type.caster.schema);          } else if (type.$isMongooseDocumentArray && Array.isArray(def)) {            def.forEach(el => applyDefaultsToPOJO(el, type.schema));          }        }      } else {        if (doc_[piece] == null) {          doc_[piece] = {};        }        doc_ = doc_[piece];      }    }  }};