/**
 * What a rule whose primary selector yielded nothing IS — the answer
 * `settleRuleEmptiness` gives, for every plane.
 */
export declare enum RuleEmptiness {
    /** The rule extracted at least one unit: not empty, evaluate it normally. */
    Matched = "matched",
    /** Nothing came out, but a matched file was not read: PARTIAL through the read scope, never empty. */
    Unread = "unread",
    /**
     * The primary list matched no FILE, nothing was unread, and EVERY primary
     * inclusion unit is intended-empty: accepted (exit 0, printed). Never granted
     * for "0 units out of live files" — that is the stale-extractor loud skip.
     */
    IntendedEmpty = "intended-empty",
    /** A baselines rule-level `expectEmpty` fence over live (or intended-empty) inputs: the empty output is the verified state. */
    AssertedEmptyOutput = "asserted-empty-output",
    /** The primary list's own negations excluded every file its inclusion globs matched. Skipped. */
    EmptiedByNegations = "emptied-by-negations",
    /** Nothing to accept: a loud skip (`failOnEmpty` → 1, else 2). `RuleEmptinessCause` says why. */
    Stale = "stale"
}
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