feat: init

node_modules/db0/dist/integrations/drizzle/_utils.mjs

@@ -0,0 +1,48 @@
+import { getTableName, is, Column, SQL } from "drizzle-orm";
+// Source: https://github.com/drizzle-team/drizzle-orm/blob/main/drizzle-orm/src/utils.ts#L14
+/** @internal */
+export function mapResultRow(columns, row, joinsNotNullableMap) {
+	// Key -> nested object key, value -> table name if all fields in the nested object are from the same table, false otherwise
+	const nullifyMap = {};
+	// eslint-disable-next-line unicorn/no-array-reduce
+	const result = columns.reduce((result, { path, field }, columnIndex) => {
+		let decoder;
+		if (is(field, Column)) {
+			decoder = field;
+		} else if (is(field, SQL)) {
+			decoder = "decoder" in field && field.decoder;
+		} else {
+			decoder = "decoder" in field.sql && field.sql.decoder;
+		}
+		let node = result;
+		for (const [pathChunkIndex, pathChunk] of path.entries()) {
+			if (pathChunkIndex < path.length - 1) {
+				if (!(pathChunk in node)) {
+					node[pathChunk] = {};
+				}
+				node = node[pathChunk];
+			} else {
+				const rawValue = row[columnIndex];
+				const value = node[pathChunk] = rawValue === null ? null : decoder.mapFromDriverValue(rawValue);
+				if (joinsNotNullableMap && is(field, Column) && path.length === 2) {
+					const objectName = path[0];
+					if (!(objectName in nullifyMap)) {
+						nullifyMap[objectName] = value === null ? getTableName(field.table) : false;
+					} else if (typeof nullifyMap[objectName] === "string" && nullifyMap[objectName] !== getTableName(field.table)) {
+						nullifyMap[objectName] = false;
+					}
+				}
+			}
+		}
+		return result;
+	}, {});
+	// Nullify all nested objects from nullifyMap that are nullable
+	if (joinsNotNullableMap && Object.keys(nullifyMap).length > 0) {
+		for (const [objectName, tableName] of Object.entries(nullifyMap)) {
+			if (typeof tableName === "string" && !joinsNotNullableMap[tableName]) {
+				result[objectName] = null;
+			}
+		}
+	}
+	return result;
+}