DuckDBClient

[mbostock]

This…

• Mostly rewrites CMU’s DuckDBClient (with a proper implementation of queryStream).
• Minimizes the exposed interface for DuckDBClient to reduce maintenance burden and discourage mutation.
• Preserves stdlib’s Arrow as apache-arrow@4 for backwards compatibility.
• Adds apache-arrow@9 (not 8) as a new dependency for DuckDB, per its package.json.
• Uses jsDelivr’s esm.run to load @duckdb/duckdb-wasm and apache-arrow as an ES module (rather than require).
• Minimizes the changes to recommended library versions in src/dependencies.mjs.
• Adds CMU DIG’s BSD license to the derived code for DuckDBClient.

Demo:

TODO Document and test the DuckDBClient implementation.

[mbostock]

/cc @domoritz if you want to review!

[domoritz]

Oh cool. I'll take a look.

[kimmolinna]

@mbostock this sounds really good. 👍