function getBoundData()

in packages/api-builder/src/xform/marks/processMark.ts [94:125]

• 28 lines of code
• 9 McCabe index (conditional complexity)

function getBoundData(mark: Mark, frame: SceneFrame): BoundData {
	const { table, facet } = mark

	// If the table is unset, render as a singleton of the existing bound data-item
	const isSingleton = !table && !facet
	if (isSingleton) {
		return [frame.boundDataItem]
	}

	if (!table) {
		throw new Error('table must be set when facet is set')
	}

	const sourceTable = frame.data[table]
	if (facet) {
		const facetSourceTable = facet.table || table
		if (!facetSourceTable) {
			throw new Error('mark does not have table or faceting table defined')
		}
		if (!facet.groupBy) {
			throw new Error('faceting must groupBy defined')
		}
		const facetSource = frame.data[facetSourceTable]
		const result = createFacetedData(facet, facetSource, sourceTable)
		return result
	} else {
		if (!sourceTable) {
			throw new Error(`could not find table ${table}`)
		}
		return sourceTable
	}
}