convertToSerializedForm() — astro Function Reference

Source Code

packages/astro/src/runtime/server/serialize.ts lines 57–110

function convertToSerializedForm(
	value: any,
	metadata: AstroComponentMetadata | Record<string, any> = {},
	parents = new WeakSet<any>(),
): [ValueOf<typeof PROP_TYPE>, any] | [ValueOf<typeof PROP_TYPE>] {
	const tag = Object.prototype.toString.call(value);
	switch (tag) {
		case '[object Date]': {
			return [PROP_TYPE.Date, (value as Date).toISOString()];
		}
		case '[object RegExp]': {
			return [PROP_TYPE.RegExp, (value as RegExp).source];
		}
		case '[object Map]': {
			return [PROP_TYPE.Map, serializeArray(Array.from(value as Map<any, any>), metadata, parents)];
		}
		case '[object Set]': {
			return [PROP_TYPE.Set, serializeArray(Array.from(value as Set<any>), metadata, parents)];
		}
		case '[object BigInt]': {
			return [PROP_TYPE.BigInt, (value as bigint).toString()];
		}
		case '[object URL]': {
			return [PROP_TYPE.URL, (value as URL).toString()];
		}
		case '[object Array]': {
			return [PROP_TYPE.JSON, serializeArray(value, metadata, parents)];
		}
		case '[object Uint8Array]': {
			return [PROP_TYPE.Uint8Array, Array.from(value as Uint8Array)];
		}
		case '[object Uint16Array]': {
			return [PROP_TYPE.Uint16Array, Array.from(value as Uint16Array)];
		}
		case '[object Uint32Array]': {
			return [PROP_TYPE.Uint32Array, Array.from(value as Uint32Array)];
		}
		default: {
			if (value !== null && typeof value === 'object') {
				return [PROP_TYPE.Value, serializeObject(value, metadata, parents)];
			}
			if (value === Infinity) {
				return [PROP_TYPE.Infinity, 1];
			}
			if (value === -Infinity) {
				return [PROP_TYPE.Infinity, -1];
			}
			if (value === undefined) {
				return [PROP_TYPE.Value];
			}
			return [PROP_TYPE.Value, value];
		}
	}
}