wikibase-sdk now uses ES modules: to keep using CommonJS, you will need to use wikibase-sdk <= v9
Some functions that were accepting arguments as several arguments were changed to accept arguments as an object only. The concerned functions are:
- getReverseClaims: getReverseClaims('P50', 'Q535') should be replaced by getReverseClaims({ properties: 'P50', values: 'Q535' })
- getRevisions: getRevisions('Q3548931', { limit: 10 }) should be replaced by getRevisions({ ids: 'Q3548931', { limit: 10 })
Functions that were accepting arguments either as several arguments or as an object now only accept arguments as an object. The concerned functions are:
simplify.claims, simplify.propertyClaims, and simplify.claim legacy interfaces were dropped: options are now expected in a single option object (rather than as several arguments)
Functions previously avaialble on wbk.parsers.wb and wbk.parsers.wd — namely entities and pagesTitles — are now directly on wbk.parsers

Other changes:

The source code was converted to TypeScript to recover types declarations, and keep them maintained in the future. This change was taken as an opportunity to do a bit of cleanup in the function interfaces.
The convenience module wikidata-sdk has been deprecated. The wdk object can now be imported from wikibase-sdk/wikidata.org: import wdk from 'wikibase-sdk/wikidata.org'