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// Take care with < (which has special meaning inside script tags)
// See: https://github.com/sveltejs/kit/blob/ff9a27b4/packages/kit/src/runtime/server/page/serialize_data.js#L4-L28
const replacements = {
'<': '\\u003C',
'\u2028': '\\u2028',
'\u2029': '\\u2029',
};
const pattern = new RegExp(`[${Object.keys(replacements).join('')}]`, 'g');
/**
* Serializes a POJO into a HTML <script> tag that can be read clientside by
* `deserializeServerData`.
*
* Use this to share data between serverside and clientside. Include the
* returned HTML in the response to a client to allow it to read this data.
*
* @param data data to serialize
* @returns serialized data (or empty string if serialization fails)
*/
export function serializeJSONData(data: object): string {
try {
return JSON.stringify(data).replace(
pattern,
(match) => replacements[match],
);
} catch (e) {
// Don't let recursive data (or other non-serializable things) throw.
// We'd rather just let the serialize no-op to avoid breaking consumers.
return '';
}
}
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