/**
 * Removes the placeholder content generated by the Angular CLI (as long as it
 * is wrapped by the "placeholder comments" generated by the CLI).
 * @param content HTML file content.
 * @returns HTML file without the placeholder content.
 */
export declare function removeHtmlAppComponentPlaceholder(content: string): string;
/**
 * Removes the `<router-outlet>` generated by the Angular CLI for the app
 * component (as long as it is in the expected position: at the end of the
 * file).
 * @param content HTML file content.
 * @returns HTML file content without the CLI generated router outlet.
 */
export declare function removeHtmlAppComponentRouterOutlet(content: string): string;
/**
 * Removes the default CLI generated content in the HTML file of a module.
 * @param content HTML file content.
 * @param moduleName Name of the module.
 * @returns HTML file content without the CLI generated default content.
 */
export declare function removeHtmlModuleDefaultContent(content: string, moduleName: string): string;
/**
 * Whether the provided HTML file is an unmodified version of the Angular CLI
 * generated app component (ignores added spaces and content modified within the
 * "template" comments).
 * @param content HTML file content.
 * @returns Whether the HTML file content is an unmodified version of the CLI
 * generated app component.
 */
export declare function isUnmodifiedHtmlAppComponent(content: string): boolean;
/**
 * Whether the provided HTML file is an unmodified version of the Angular CLI
 * generated module content (ignores added spaces).
 * @param content HTML file content.
 * @param moduleName Name of the module.
 * @returns Whether the HTML file content is an unmodified version of the CLI
 * generated module content.
 */
export declare function isUnmodifiedHtmlModuleComponent(content: string, moduleName: string): boolean;