Function getFieldValue

packages/core/src/forms/bind.ts:15–37

(
  state: S,
  field: keyof S | string,
)

}

function getFieldValue<S extends Record<string, unknown>>(
  state: S,
  field: keyof S | string,
): unknown {
  if (typeof field !== "string") {
    return state[field];
  }

  const path = parseFieldPath(field);
  if (path.length === 0) {
    return undefined;
  }

  let current: unknown = state;
  for (const segment of path) {
    if (current === null || typeof current !== "object") {
      return undefined;
    }
    current = (current as Record<string, unknown>)[segment];
  }

  return current;
}

function setField<S extends Record<string, unknown>>(
  prev: Readonly<S>,