How to use the @graphql-codegen/plugin-helpers.normalizeOutputParam function in @graphql-codegen/plugin-helpers

      .map(filename => ({ filename, config: normalizeOutputParam(config.generates[filename]) }))
      .forEach(entry => {

It should looks like that:

        schema:
          - my-schema.graphql
        generates:
          my-file.ts:
            - plugin1
            - plugin2
            - plugin3
        `
      );
    }

    for (const filename of generateKeys) {
      generates[filename] = normalizeOutputParam(config.generates[filename]);

      if (generates[filename].plugins.length === 0) {
        throw new DetailedError(
          'Invalid Codegen Configuration!',
          `
          Please make sure that your codegen config file has defined plugins list for output "${filename}".
          
          It should looks like that:
  
          schema:
            - my-schema.graphql
          generates:
            my-file.ts:
              - plugin1
              - plugin2
              - plugin3

    .map(filename => normalizeOutputParam(config.generates[filename]))
    .forEach(conf => {