JSON to TypeScript in VS Code
How to generate TypeScript interfaces from JSON in VS Code — plugins, Paste JSON as Code, and manual approach.
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Tags: JSON to TypeScript VS Code, VS Code JSON types, Paste JSON as Code extension
JSON to TypeScript in VS Code The fastest way to get typed interfaces from a JSON API response without leaving VS Code is the Paste JSON as Code extension. Ten seconds from copy to typed interface. TypeScript is used by 68% of JavaScript developers, with VS Code being the editor for 73% of TypeScript projects, according to State of JS 2024 --- What is the paste json as code extension? Extension: Paste JSON as Code by quicktype Installs: 2M+ Engine: quicktype open-source code generator Installation Open VS Code Extensions (Cmd+Shift+X) Search "Paste JSON as Code" Install the quicktype extension Usage Copy any JSON to clipboard (API response, file contents, browser DevTools payload) Open the file where you want the interfaces Place cursor where interfaces should be inserted Open Command…
Frequently Asked Questions
How do I generate TypeScript from JSON in VS Code?
Install the 'Paste JSON as Code' extension (by quicktype). Copy your JSON, open your TypeScript file, then run the 'Paste JSON as Code' command from the Command Palette. It generates fully typed interfaces at your cursor. No browser tab switching required.
What is the Paste JSON as Code extension?
Paste JSON as Code is a VS Code extension built on quicktype, an open-source code generator. It converts JSON, JSON Schema, GraphQL, and TypeScript objects into typed interfaces for TypeScript, Python, Go, Java, C#, and more. It's one of the most-installed developer extensions on the VS Code marketplace.
How do I use quicktype in VS Code?
quicktype powers the Paste JSON as Code extension. After installing, copy JSON to your clipboard and run the 'Paste JSON as Code' command. You can also use quicktype directly from the web at app.quicktype.io, or from the CLI with npx quicktype --src data.json --lang typescript.
How do I convert an API response to TypeScript?
Open your browser DevTools Network tab, find the API call, right-click the response and copy it as JSON. Then use Paste JSON as Code in VS Code, or paste into theproductguy.in/tools/json-to/-typescript/. Either produces fully typed interfaces you can import immediately.
How do I update TypeScript interfaces when JSON changes?
Re-run the generator with the new response and compare the output to your existing interfaces using a diff view. In VS Code, split the editor, paste the old and new interfaces side by side, and update only the changed fields. The JSON Diff tool can help you spot what changed in the data before updating the types.
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