Function objectStrict

Returns Decoder<T>

A decoder that validates and returns objects matching the specified structure, failing if unknown fields are present

interface User {
  name: string;
  age: number;
}

const userDecoder = JsonDecoder.objectStrict<User>({
  name: JsonDecoder.string(),
  age: JsonDecoder.number()
});

userDecoder.decode({name: 'John', age: 30}); // Ok<User>
userDecoder.decode({name: 'John', age: 30, extra: 'field'}); // Err with issues: [{ message: 'Unknown key "extra" found in strict object', path: [] }]
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// Use the fromKey API to decode from different JSON keys
const userDecoder = JsonDecoder.objectStrict<User>({
  name: { fromKey: 'user_name', decoder: JsonDecoder.string() },
  age: JsonDecoder.number()
});

userDecoder.decode({user_name: 'John', age: 30}); // Ok<User>
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