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# Util
Utility API for third-party implementations of the dispatcher API.
## `parseHeaders(headers, [obj])`
Receives a header object and returns the parsed value.
Arguments:
- **headers** `Record<string, string | string[]> | (Buffer | string | (Buffer | string)[])[]` (required) - Header object.
- **obj** `Record<string, string | string[]>` (optional) - Object to specify a proxy object. The parsed value is assigned to this object. But, if **headers** is an object, it is not used.
Returns: `Record<string, string | string[]>` If **headers** is an object, it is **headers**. Otherwise, if **obj** is specified, it is equivalent to **obj**.
## `headerNameToString(value)`
Retrieves a header name and returns its lowercase value.
Arguments:
- **value** `string | Buffer` (required) - Header name.
Returns: `string`
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