export interface Options {
    keepArrayIndent?: boolean;
    updateAll?: boolean;
}
/**
 * Parse the provides update string as JSON and use the keys in the
 * provided object to update, insert, or delete keys in the provided
 * YAML.
 *
 * @param updates      string of updates
 * @param currentYaml  YAML document to update
 * @param options      format settings
 * @return updated YAML document as a string
 */
export declare function updateYamlDocumentWithString(updatesString: string, currentYaml: string, options?: Options): string;
/**
 * Use the keys in the provided object to update, insert, or delete
 * keys in the provided YAML.  The YAML can be multiple documents.
 *
 * The updating follows two possible strategies depending on the ̀updateAll`
 * option. When `false`, the default, if the keys are found in any of the
 * documents, they are updated in the first document the key exists in. If a key
 * is not found in any document, it is added to the first document. When
 * `̀updateAll` is `true`, the updates append on all documents.
 *
 * @param updates      object of updates
 * @param currentYaml  YAML document to update
 * @param options      format settings
 * @return updated YAML document as a string
 */
export declare function updateYamlDocuments(updates: {
    [key: string]: any;
}, yamlDocuments: string, options?: Options): string;
/**
 * Use the keys in the provided object to update, insert, or delete
 * keys in the provided YAML document.
 *
 * @param updates      object of updates
 * @param currentYaml  YAML document to update
 * @param options      format settings
 * @return updated YAML document as a string
 */
export declare function updateYamlDocument(updates: {
    [key: string]: any;
}, currentYaml: string, options?: Options): string;
/**
 * Update, insert, or delete the value of a key in `currentYml`, a
 * string containing valid YAML.  It does its best to retain the same
 * formatting, but empty lines and trailing whitespace may disappear
 * if adjacent lines are edited and comments that are parsed as part
 * of a value that is deleted will be deleted.
 *
 * @param key  the key whose value should be replaced
 * @param value  the value to set the key to, set to `null` or `undefined` to remove the key
 * @param options settings for the formatting
 * @return updated YAML document as a string
 */
export declare function updateYamlKey(key: string, value: any, currentYaml: string, options?: Options): string;
/**
 * Format a key and value into a YAML string.
 *
 * @param key    key to serialize
 * @param value  value to serialize
 * @param options settings for the formatting
 */
export declare function formatYamlKey(key: string, value: any, options?: Options): string;
/**
 * Format object into a YAML string.
 *
 * @param obj     object to serialize
 * @param options settings for the formatting
 */
export declare function formatYaml(obj: any, options?: Options): string;