Awesome

flow2schema

Example

$ cat example.js

type A<T, K> = {
    t: T,
    k: K,
};

export type X = {
    a: A<string, boolean>,
    b: number,
};

$ flow2schema -t json-schema example.js

{
    "$schema": "http://json-schema.org/draft-06/schema#",
    "definitions": {
        "example::A::string::boolean": {
            "type": "object",
            "properties": {
                "t": {"type": "string"},
                "k": {"type": "boolean"}
            },
            "required": ["t", "k"]
        },
        "example::X": {
            "type": "object",
            "properties": {
                "a": {"$ref": "#/definitions/example::A::string::boolean"},
                "b": {"type": "number"}
            },
            "required": ["a", "b"]
        }
    }
}

TODO

• Complete generics support.
• Errors and warnings.
• Complete commonjs support.
• Documentation.
• Stabilize API.
• Webpack plugin.
• Rollup plugin.