tsutils required but not installed

[straussCS]

Error: Cannot find module 'tsutils'
Require stack:
- /home/cstrauss/Documents/w11k/trusted-shops/wix-trusted-shops-legal-app/client/node_modules/@w11k/rx-ninja/dist/bundle/tslint_rules/util.js
- /home/cstrauss/Documents/w11k/trusted-shops/wix-trusted-shops-legal-app/client/node_modules/@w11k/rx-ninja/dist/bundle/tslint_rules/rxNinjaSubscribeTakeuntilRule.js
- /home/cstrauss/Documents/w11k/trusted-shops/wix-trusted-shops-legal-app/client/node_modules/tslint/lib/ruleLoader.js
- /home/cstrauss/Documents/w11k/trusted-shops/wix-trusted-shops-legal-app/client/node_modules/tslint/lib/configuration.js
- /home/cstrauss/Documents/w11k/trusted-shops/wix-trusted-shops-legal-app/client/node_modules/tslint/lib/index.js
- /home/cstrauss/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/221.5080.210/plugins/tslint/js/languageService/tslint-plugin.js
- /home/cstrauss/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/221.5080.210/plugins/tslint/js/languageService/tslint-plugin-provider.js
- /home/cstrauss/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/221.5080.210/plugins/JavaScriptLanguage/jsLanguageServicesImpl/js-language-service.js