@kanzo-tech/mosaic

The Mosaic conversation, without React.

npm install @kanzo-tech/mosaic @uwdata/mosaic-core @uwdata/mosaic-sql

mosaic-core and mosaic-sql are required peers, not optional ones. There is nothing here without them — that is what this package is. Installing them once is also the point: two copies of Mosaic are two coordinators, and two coordinators are two crossfilters that never hear each other.

What it holds

import { Coordinator, Selection, MosaicClient, clausePoints } from "@kanzo-tech/mosaic";
import { column, fillColumn, numbers, IdSetClient } from "@kanzo-tech/mosaic";

• Re-exports of the coordinator, the clients, the five clause builders, the loaders and the connector — so a consumer boots a coordinator without a direct @uwdata import.
• column / fillColumn / numbers — the half of the client protocol the protocol does not give you. The coordinator answers with an Arrow table, and Arrow offers a typed column only when the type allows one: an integer id gives an array, a dictionary-encoded label gives nothing usable. Every call site was writing as { getChild(name: string): … }, which asserts Arrow's shape rather than checking it, and is wrong on the first query that selects a string.
• IdSetClient — the crossfilter adapter for a view whose positions are not in the database. A GPU canvas or a map cannot publish weight BETWEEN …; there is no column to write the predicate over. It can only enumerate what was hit.

Why it is not part of @kanzo-tech/ui

It was, and the cost landed somewhere else. @kanzo-tech/graph/duckdb reached its coordinator through @kanzo-tech/ui/analytics, whose barrel re-exports the React charts first — and calls @uwdata/vgplot doing it. The import is static, so a host that installed the two peers the docs asked for still could not open that subpath: vgplot came along, unasked and unused.

Reading a column out of an answer and publishing a clause are not user-interface concerns. They lived in a component library only because that is where the first chart needed them.

The charts did not move. @kanzo-tech/ui/analytics exports every name it exported before, these among them.