YAML to TypeScript Converter
Generate TypeScript interfaces from YAML data
YAML Input
TypeScript Output
What Is YAML to TypeScript?
TypeScript uses interfaces and types for structure. This tool generates TypeScript interfaces from your YAML so you can type parsed config or data. The YAML 1.2 specification defines the input format.
Conversion runs in your browser. Nothing is sent to a server. The generated types work with parsers like js-yaml or the yaml package. For JSON to TypeScript, use JSON to TypeScript.
YAML to TypeScript Examples
Generate TypeScript interfaces from YAML. Telecom-themed example:
Example: Subscriber record
TypeScript output:
Click the Sample button above to load more examples into the editor.
How to Use This Tool
Paste or Upload YAML
Copy your YAML and paste it into the left editor. You can also click Upload to load a .yaml or .yml file. The Sample button loads example data. Invalid YAML will show an error.
Copy or Download
Use Copy or Download. For JSON to TypeScript, use JSON to TypeScript. For YAML formatting, use YAML Formatter.
When YAML to TypeScript Helps
When building Node.js or frontend apps that load YAML config (e.g. config.yml, Kubernetes manifests, or CI workflows), you need typed structures for the parsed data. Pasting a sample here gives you TypeScript interfaces you can use with js-yaml or the yaml package. Manually writing types for complex nested YAML is tedious; this tool infers the structure from your sample.
Config files like application.yml or GitHub Actions workflows often have deep nesting. The generated types help catch typos and provide autocomplete in your IDE. For pulling out specific values from large YAML, convert to JSON first and use the JSON Path tool.
Frequently Asked Questions
How do I parse YAML in TypeScript?
Use js-yaml or the yaml package. Parse the YAML string and assign to the generated type: const config = yaml.parse(str) as MyConfig. For runtime validation, consider Zod or io-ts.
js-yaml vs yaml package?
js-yaml is widely used. The yaml package has a different API and better comment preservation. Both work with the generated types.
Is my data private?
Yes. Generation runs entirely in your browser. No YAML or code is sent to any server.
Optional vs required fields?
The generator infers from the sample. Add ? to interface properties for optional fields. For strict runtime validation, use Zod or similar with the generated types as a reference.
Can I use with Angular or React?
Yes. The generated types work in any TypeScript project. Load YAML at build time or runtime and cast to the generated interface. For environment config, consider loading YAML in a config service.