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The error message "Unexpected token '<'" typically means that the TypeScript code in the test file is not being properly compiled to JavaScript by the Jest testing framework. This can occur if the necessary configuration files for TypeScript and Jest are not set up correctly, or if there are syntax errors in the test file. Some possible solutions include ensuring that the correct versions of TypeScript and Jest are installed, configuring the TypeScript compiler options in your Jest configuration file, and checking for syntax errors in the test file.