AWS CDK Template Param Helper

ParamWithMeta.ts

export class ParamWithMeta extends CfnParameter {
  constructor(
    scope: Construct,
    id: string,
    props?: { label?: string; group?: string } & CfnParameterProps
  ) {
    const { label = id, group = 'Parameters', ...paramProps } = props || {};

    super(scope, id, paramProps);

    if (scope instanceof Stack) {
      const stackScope: Stack = scope as Stack;

      stackScope.templateOptions.metadata =
        stackScope.templateOptions.metadata || {};
      stackScope.templateOptions.metadata['AWS::CloudFormation::Interface'] =
        stackScope.templateOptions.metadata['AWS::CloudFormation::Interface'] ||
        {};
      stackScope.templateOptions.metadata[
        'AWS::CloudFormation::Interface'
      ].ParameterGroups =
        stackScope.templateOptions.metadata['AWS::CloudFormation::Interface']
          .ParameterGroups || [];
      stackScope.templateOptions.metadata[
        'AWS::CloudFormation::Interface'
      ].ParameterLabels =
        stackScope.templateOptions.metadata['AWS::CloudFormation::Interface']
          .ParameterLabels || {};

      const {
        templateOptions: {
          metadata: {
            ['AWS::CloudFormation::Interface']: {
              ParameterGroups = [],
              ParameterLabels = {},
            } = {},
          } = {},
        } = {},
      } = stackScope;
      const targetParamGrp = ParameterGroups.filter(
        (pg: Record<any, any>) => pg.Label === group
      )[0] || {
        Label: group,
        Parameters: [],
      };

      targetParamGrp.Parameters.push(label);

      if (ParameterGroups.indexOf(targetParamGrp) === -1) {
        ParameterGroups.push(targetParamGrp);
      }

      ParameterLabels[id] = {
        default: label,
      };
    }
  }
}