Function addItem

lib/encoder.js:851–872

(val, key)

      valueSubtype = subtypes[1];
    }
    function addItem(val, key) {
      if (key === null || typeof key === 'undefined' || key === types.unset) {
        throw new TypeError('A map can\'t contain null or unset keys');
      }
      if (val === null || typeof val === 'undefined' || val === types.unset) {
        throw new TypeError('A map can\'t contain null or unset values');
      }
      const keyBuffer = self.encode(key, keySubtype);
      //include item byte length
      parts.push(self.getLengthBuffer(keyBuffer));
      //include item
      parts.push(keyBuffer);
      //value
      const valueBuffer = self.encode(val, valueSubtype);
      //include item byte length
      parts.push(self.getLengthBuffer(valueBuffer));
      //include item
      if (valueBuffer !== null) {
        parts.push(valueBuffer);
      }
      propCounter++;
    }
    if (this.encodingOptions.map && value instanceof this.encodingOptions.map) {
      //Use Map#forEach() method to iterate
      value.forEach(addItem);