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YAML to TypeScript

Generate TypeScript interfaces from a YAML sample — powered by quicktype-core, client-side.

Root type name:

Input YAML

TypeScript Output

What is YAML to TypeScript?

This tool reads a YAML sample and infers matching TypeScript interface/type definitions. Useful when you hand-edit config files (app settings, Kubernetes values, Helm charts) and want compile-time safety in your codebase. Built on quicktype-core, the same engine trusted by countless converters.

How to Use

Paste a representative YAML sample (the richer, the better types).
Set the root type name (PascalCase).
Click Convert and copy the generated interfaces.

Key Features

Nested structures, arrays, unions inferred automatically
Keeps types minimal — uses interfaces, optional properties
Handles numbers, booleans, nulls, and string enums
Fully client-side — no YAML leaves your browser

Common Use Cases

Typed access to app config loaded from YAML
Strong types for Helm values and chart parameters
Kubernetes CRD spec modeling for controllers
CI pipeline object modeling for custom actions

Frequently Asked Questions

Q: Does it support every YAML feature?

A: Most YAML 1.2 features via js-yaml. Anchors and aliases are dereferenced to concrete values before type inference.

Q: Why are some fields typed as any?

A: When a field is null or absent in the sample, quicktype cannot infer its type. Provide a richer sample or add the field manually.

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