private _replaceExamplePlaceholders()

in src/app/shared/stack-blitz/stack-blitz-writer.ts [158:211]
30 lines of code
8 McCabe index (conditional complexity)

  private _replaceExamplePlaceholders(data: ExampleData, fileName: string,
                                      fileContent: string, isTest: boolean): string {
    // Replaces the version placeholder in the `index.html` and `package.json` file.
    // Technically we invalidate the `package-lock.json` file for the StackBlitz boilerplate
    // by dynamically changing the version in the `package.json`, but the Turbo package manager
    // seems to be able to partially re-use the lock file to speed up the module tree computation,
    // so providing a lock file is still reasonable while modifying the `package.json`.
    if (fileName === 'src/index.html' || fileName === 'package.json') {
      fileContent = fileContent.replace(/\${version}/g, MAT_VERSION.full);
    }

    if (fileName === 'src/index.html') {
      // Replace the component selector in `index,html`.
      // For example, <material-docs-example></material-docs-example> will be replaced as
      // <button-demo></button-demo>
      fileContent = fileContent
        .replace(/material-docs-example/g, data.selectorName)
        .replace(/\${title}/g, data.description);
    } else if (fileName === '.stackblitzrc') {
      fileContent = fileContent
        .replace(/\${startCommand}/, isTest ? 'turbo test' : 'turbo start');
    } else if (fileName === 'src/app/app.module.ts') {
      const joinedComponentNames = data.componentNames.join(', ');
      // Replace the component name in `main.ts`.
      // Replace `import {MaterialDocsExample} from 'material-docs-example'`
      // will be replaced as `import {ButtonDemo} from './button-demo'`
      fileContent = fileContent.replace(/{MaterialDocsExample}/g, `{${joinedComponentNames}}`);

      // Replace `declarations: [MaterialDocsExample]`
      // will be replaced as `declarations: [ButtonDemo]`
      fileContent = fileContent.
        replace(/declarations: \[MaterialDocsExample]/g,
          `declarations: [${joinedComponentNames}]`);

      // Replace `entryComponents: [MaterialDocsExample]`
      // will be replaced as `entryComponents: [DialogContent]`
      fileContent = fileContent.
        replace(/entryComponents: \[MaterialDocsExample]/g,
          `entryComponents: [${joinedComponentNames}]`);

      // Replace `bootstrap: [MaterialDocsExample]`
      // will be replaced as `bootstrap: [ButtonDemo]`
      // This assumes the first component listed in the main component
      fileContent = fileContent.
        replace(/bootstrap: \[MaterialDocsExample]/g,
          `bootstrap: [${data.componentNames[0]}]`);

      const dotIndex = data.indexFilename.lastIndexOf('.');
      const importFileName = data.indexFilename.slice(0, dotIndex === -1 ? undefined : dotIndex);
      fileContent = fileContent.replace(/material-docs-example/g, importFileName);

    }
    return fileContent;
  }