@koopjs/featureserver/src/helpers/fields/layer-fields.js

*An open source implementation of the GeoServices specification*

const Fields = require('./fields');

class LayerFields extends Fields {
  static create(inputOptions) {
    const options = Fields.normalizeOptions(inputOptions);
    return new LayerFields(options);
  }

  constructor(options) {
    super(options);

    return this.fields.map((field) => {
      const { editable = false, nullable = false } = findDefinition(
        field.name,
        options.fieldDefinitions,
      );
      field.setEditable(editable).setNullable(nullable);
      return field;
    });
  }
}

function findDefinition(fieldName, fieldDefinitions = []) {
  return (
    fieldDefinitions.find((definition) => {
      return definition.name === fieldName;
    }) || {}
  );
}
module.exports = LayerFields;