Variable $GrandpaEquivocationConst

$GrandpaEquivocation: $.Shape<{
    first: readonly [{
        targetHash: `0x${string}`;
        targetNumber: number;
    }, `0x${string}`];
    identity: AccountId32Like;
    roundNumber: bigint;
    second: readonly [{
        targetHash: `0x${string}`;
        targetNumber: number;
    }, `0x${string}`];
}, {
    first: [{
        targetHash: `0x${string}`;
        targetNumber: number;
    }, `0x${string}`];
    identity: AccountId32;
    roundNumber: bigint;
    second: [{
        targetHash: `0x${string}`;
        targetNumber: number;
    }, `0x${string}`];
}> = ...

An equivocation (double-vote) in a given round.

Ref: https://github.com/paritytech/finality-grandpa/blob/master/src/lib.rs#L210