datasette-enrichments-quickjs

Datasette enrichment for enriching data with a custom JavaScript function

Installation

Install this plugin in the same environment as Datasette.

datasette install datasette-enrichments-quickjs

Usage

This enrichment allows you to select rows from a table and specify a custom JavaScript function to use to generate a value for each of those rows, storing that value in a specified column and creating that column if it does not exist.

Code runs in a QuickJS sandbox with a 0.1s time limit for the execution of each function and a 4MB memory limit.

Enrichment JavaScript functions look like this:

function enrich(row) {
    return row["title"] + "!";
}

Development

To set up this plugin locally, first checkout the code. Then create a new virtual environment:

cd datasette-enrichments-quickjs
python3 -m venv venv
source venv/bin/activate

Now install the dependencies and test dependencies:

pip install -e '.[test]'

To run the tests:

pytest