/**
 * Parse repeated `--attribute key=value` flags into the filter the analytics
 * runs listing takes.
 *
 * Bounds are checked here as well as in the World so the message names the
 * flag the user typed rather than the parameter it becomes. Only the first
 * `=` splits, since an attribute value may contain one. An empty value is
 * meaningful — it matches runs whose attribute was set to the empty string —
 * so only an empty key is rejected. A key given twice is rejected rather
 * than resolved: matching is per-key, so one of the two values would have to
 * be discarded, and silently picking either would answer a question the
 * caller did not ask.
 */
export declare function parseAttributeFilters(values: string[] | undefined): Record<string, string> | undefined;
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