How to use the @nrwl/schematics.toFileName function in @nrwl/schematics

export default function(options: any): Rule {
  const fullPath = path.join(options.directory, toFileName(options.name), options.sourceDir);

  const templateSource = apply(url('./files'), [template({ ...options, ...names(options.name), dot: '.', tmpl: '' })]);

  return chain([branchAndMerge(chain([mergeWith(templateSource), addLibToAngularCliJson(fullPath, options)]))]);
}

export default function(options: any): Rule {
  const fullPath = path.join(options.directory, toFileName(options.name), options.sourceDir);

  const templateSource = apply(url('./files'), [template({ ...options, ...names(options.name), dot: '.', tmpl: '' })]);

  return chain([branchAndMerge(chain([mergeWith(templateSource), addLibToAngularCliJson(fullPath, options)]))]);
}

export default function(options: Schema): Rule {
  const fullPath = path.join(options.directory, toFileName(options.name), options.sourceDir);
  return chain([
    mergeWith(apply(url('./files'), [template({ ...options, ...names(options.name), dot: '.', tmpl: '' })])),
    externalSchematic('@schematics/angular', 'module', {
      name: 'app',
      commonModule: false,
      flat: true,
      routing: options.routing,
      sourceDir: fullPath,
      spec: false
    }),
    externalSchematic('@schematics/angular', 'component', {
      name: 'app',
      selector: `${options.prefix}-root`,
      sourceDir: fullPath,
      flat: true,
      inlineStyle: options.inlineStyle,