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32 lines
1.1 KiB
32 lines
1.1 KiB
/**
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*
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* Types for use when summarizing differences between versions of a table, with the
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* diff itself presented in tabular form.
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*
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*/
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/**
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* Pairs of before/after values of cells. Values, when present, are nested in a trivial
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* list since they can be literally anything - null, undefined, etc. Otherwise they
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* are either null, meaning non-existent, or "?", meaning unknown. Non-existent values
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* appear prior to a table/column being created, or after it has been destroyed.
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* Unknown values appear when they are omitted from summaries of bulk actions, and those
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* summaries are then merged with others.
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*/
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export type CellDelta = [[any]|"?"|null, [any]|"?"|null];
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/** a special column indicating what changes happened on row (addition, update, removal) */
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export type RowChangeType = string;
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/** differences for an individual table */
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export interface TabularDiff {
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header: string[]; /** labels for columns */
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cells: Array<[RowChangeType, number, CellDelta[]]>; // "number" is rowId
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}
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/** differences for a collection of tables */
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export interface TabularDiffs {
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[tableId: string]: TabularDiff;
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}
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