import { Rule } from '@angular-devkit/schematics';
/**
 * Update Otter environment variable for schematics
 * @param options @see RuleFactory.options
 * @param options.projectName
 * @param options.enableStyling
 * @param options.enableAnalytics
 * @param options.workingDirectory
 * @param _rootPath @see RuleFactory.rootPath
 */
export declare function updateOtterEnvironmentAdapter(options: {
    projectName?: string | null | undefined;
    enableStyling?: boolean;
    enableAnalytics?: boolean;
    workingDirectory?: string | null;
}, _rootPath: string): Rule;
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