Listr - dynamically populate nested list

gistfile1.txt

'use strict';
const Listr = require('listr');
const config = require('./config');
const {
	connect,
	getSaveableMeasures,
	convertToMeasureValues,
	saveMeasures,
	updateMeasureState
} = require('.');

const pool = connect(config);
const tasks = new Listr([{
	title: 'Find unsaved measures',
	task: async ctx => {
		ctx.unsavedMeasures = await getSaveableMeasures(pool);
	}
}, {
	title: 'Saving measures',
	task: ctx => {
		const savingProcedures = ctx.unsavedMeasures.map(({year, code, results}) => ({
			title: code,
			task: async() => {
				const measures = convertToMeasureValues(results, 4242, year);
				await saveMeasures(measures, pool);
				await updateMeasureState(code, 'Caricata', pool);
			}
		}));
		return new Listr(savingProcedures);
	}
}, {
	title: 'All measures saved',
	task: () => pool.close()
}]);

tasks.run().catch(err => {
	console.error(err);
});

// originally found at https://github.com/SamVerschueren/listr/issues/50