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Which APIs are supported in Web Workers and Service Workers? This chart shows the breakdown for each browser, based on automated testing. Note that the goal is not for browsers to reach 100% on all tests. Some APIs are intentionally not exposed to workers. This site is for informational purposes only.

Regular object ES6 Map ES6 Set Immutable Map Immutable Set Immutable List Immutable#FromJS Immutable Map#mergeDeep LocalStorage WebSQL IndexedDB LokiJS PouchDB PouchDB (WebSQL) LocalForage LocalForage (WebSQL) Dexie