squashMysqlScheme() — drizzle-orm Function Reference

Source Code

drizzle-kit/src/serializer/mysqlSchema.ts lines 338–399

export const squashMysqlScheme = (json: MySqlSchema): MySqlSchemaSquashed => {
	const mappedTables = Object.fromEntries(
		Object.entries(json.tables).map((it) => {
			const squashedIndexes = mapValues(it[1].indexes, (index) => {
				return MySqlSquasher.squashIdx(index);
			});

			const squashedFKs = mapValues(it[1].foreignKeys, (fk) => {
				return MySqlSquasher.squashFK(fk);
			});

			const squashedPKs = mapValues(it[1].compositePrimaryKeys, (pk) => {
				return MySqlSquasher.squashPK(pk);
			});

			const squashedUniqueConstraints = mapValues(
				it[1].uniqueConstraints,
				(unq) => {
					return MySqlSquasher.squashUnique(unq);
				},
			);

			const squashedCheckConstraints = mapValues(it[1].checkConstraint, (check) => {
				return MySqlSquasher.squashCheck(check);
			});

			return [
				it[0],
				{
					name: it[1].name,
					columns: it[1].columns,
					indexes: squashedIndexes,
					foreignKeys: squashedFKs,
					compositePrimaryKeys: squashedPKs,
					uniqueConstraints: squashedUniqueConstraints,
					checkConstraints: squashedCheckConstraints,
				},
			];
		}),
	);

	const mappedViews = Object.fromEntries(
		Object.entries(json.views).map(([key, value]) => {
			const meta = MySqlSquasher.squashView(value);

			return [key, {
				name: value.name,
				isExisting: value.isExisting,
				columns: value.columns,
				definition: value.definition,
				meta,
			}];
		}),
	);

	return {
		version: '5',
		dialect: json.dialect,
		tables: mappedTables,
		views: mappedViews,
	};
};