If true, delete the local cache of the version file and retrieve it again. (default = false)
Optionalcommit: stringThe commit string from https://github.com/schemaorg/schemaorg which is taken as source (if not given, the latest commit of our fork at https://github.com/semantifyit/schemaorg is taken). Use this parameter only if you want to change the schema.org repository used as source for the schema versions file. By standard, SDO Adapter uses a fork of the schema.org repository, which is updated only when schema.org releases a new vocabulary version, and that version passes all tests of SDO Adapter.
The version file as JSON object
const { SOA } = require("schema-org-adapter");
// version file needed for the first time -> the file is fetched and then saved in cache
let schemaVersions = await SOA.fetchSchemaVersions();
// version file already in cache -> no fetching needed
schemaVersions = await SOA.fetchSchemaVersions();
// passing cacheClear = true -> the file is fetched and then saved in cache again
schemaVersions = await SOA.fetchSchemaVersions(true);
Returns the schema.org version file, which is fetched once and then saved in local cache. Also sends head-requests to determine if the 'latest' schema.org version is really 'fetch-able'. If not, this head-requests are done again for older versions until the latest valid version is determined and saved in the cache. It is possible to reset the cache with the parameter cacheClear.