Function applyJsonDiff

drizzle-kit/src/jsonDiffer.js:208–411

(json1, json2)

}

export function applyJsonDiff(json1, json2) {
	json1 = JSON.parse(JSON.stringify(json1));
	json2 = JSON.parse(JSON.stringify(json2));

	// deep copy, needed because of the bug in diff library
	const rawDiff = diff(json1, json2);

	const difference = JSON.parse(JSON.stringify(rawDiff || {}));
	difference.schemas = difference.schemas || {};
	difference.tables = difference.tables || {};
	difference.enums = difference.enums || {};
	difference.sequences = difference.sequences || {};
	difference.roles = difference.roles || {};
	difference.policies = difference.policies || {};
	difference.views = difference.views || {};

	// remove added/deleted schemas
	const schemaKeys = Object.keys(difference.schemas);
	for (let key of schemaKeys) {
		if (key.endsWith('__added') || key.endsWith('__deleted')) {
			delete difference.schemas[key];
			continue;
		}
	}

	// remove added/deleted tables
	const tableKeys = Object.keys(difference.tables);
	for (let key of tableKeys) {
		if (key.endsWith('__added') || key.endsWith('__deleted')) {
			delete difference.tables[key];
			continue;
		}

		// supply table name and schema for altered tables
		const table = json1.tables[key];
		difference.tables[key] = {
			name: table.name,
			schema: table.schema,
			...difference.tables[key],
		};
	}

	for (let [tableKey, tableValue] of Object.entries(difference.tables)) {
		const table = difference.tables[tableKey];
		const columns = tableValue.columns || {};
		const columnKeys = Object.keys(columns);
		for (let key of columnKeys) {
			if (key.endsWith('__added') || key.endsWith('__deleted')) {
				delete table.columns[key];
				continue;
			}
		}

		if (Object.keys(columns).length === 0) {
			delete table['columns'];
		}

		if (