JSON to TypeScript
Paste JSON and get TypeScript interfaces, including nested objects and arrays
Instructions
JSON 转 TypeScript 接口使用说明
功能简介
拿到一份接口返回的 JSON，要手写 TypeScript 类型很费时间。这个工具直接读 JSON 结构，递归推断出嵌套的 interface。
使用方法
注意事项
❓ FAQ
What if the object types in an array are inconsistent?
The tool generates one interface for each distinct structure and writes the array element type as a union, for example `(User | Admin)[]`. You can narrow it down after generation based on your actual business logic.
Why is the type of a null field null?
Because there is only this one piece of data, it is impossible to tell whether it will be a string or a number later. It is recommended to add all the types that have appeared in real data, or manually change it to `string | null`.
Does it support generating Go or Java types?
Currently it only generates TypeScript. If you want to see the structure first, the nested interface names inferred by this tool are not hard to rewrite as structs in other languages.
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