The YAML to TypeScript Interface tool is a tool that converts the YAML format to a TypeScript interface. It can convert the input YAML string into a TypeScript interface definition, which is convenient for developers to use in TypeScript projects. 

Function description:
1. Paste or input data in YAML format into the tool. 

2. The tool will automatically convert YAML data into JSON format and format it. 

3. The tool will automatically convert JSON data into TypeScript interface definitions. 

4. The tool provides sample data and the function of automatically filling the input bar, which is convenient for users to use. 

Usage scenarios:

1. TypeScript project development: In TypeScript projects, developers usually need to determine the right interface for type checking and code hinting. Using the YAML to TypeScript Interface tool, developers can easily convert YAML data into TypeScript interface definition, providing high development efficiency. 
 
2. Data format conversion: In the process of data format conversion, developers can use the YAML to TypeScript interface tool to convert YAML data into TypeScript interface, which is convenient for subsequent data processing and use. 

3. Data structure analysis: When analyzing the data structure, developers can use the YAML to TypeScript Interface tool to convert YAML data into TypeScript interface definition, which is convenient for explaining data structure and content.