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WorkingTreeEnableIfEmptyResult

type WorkingTreeEnableIfEmptyResult = 
  | {
  capability: CommitCapabilityInfo;
  kind: "enabled";
}
  | {
  capability: CommitCapabilityInfo;
  kind: "already_enabled";
}
  | {
  kind: "not_empty";
};

Defined in: packages/rxdb-plugin-working-tree/src/working-tree/working-tree-facade.ts:96

WorkingTreeManager.enableIfEmpty 的三种结局。

Union Members​

Type Literal​

{
  capability: CommitCapabilityInfo;
  kind: "enabled";
}

capability​

readonly capability: CommitCapabilityInfo;

启用后的能力信息

kind​

readonly kind: "enabled";

判别位：本次调用完成了启用

Type Literal​

{
  capability: CommitCapabilityInfo;
  kind: "already_enabled";
}

capability​

readonly capability: CommitCapabilityInfo;

现状的能力信息

kind​

readonly kind: "already_enabled";

判别位：库本来就已启用，本次调用什么都没改

Type Literal​

{
  kind: "not_empty";
}

kind​

readonly kind: "not_empty";

判别位：库里已有内容，按规则不自动启用；手动 enable() 仍可用

Remarks​

做成判别联合而不是 { enabled: boolean; … }：三种结局各有各的载荷——enabled 与 already_enabled 带能力信息，not_empty 什么都没有。拍平成一个对象就要给「没发生的 那次启用」编造一份能力信息（或可空字段），调用方被迫处理四种组合，其中两种是假的。