* wip: working on rrweb logger * wip: can record and replay some simple log * wip: can record and replay log's stack * wip: try to serialize object * wip: record and replay console logger hijack all of the console functions. add listener to thrown errors * wip: record and replay console logger add limit to the max number of log records * feat: enable rrweb to record and replay log messages in console this is the implementation of new feature request(issue #234) here are a few points of description. 1. users need to set recordLog option in rrweb.record's parameter to record log messages. The log recorder is off by default. 2. support recording and replaying all kinds of console functions. But the reliability of them should be tested more 3. the stringify function in stringify.ts needs improvement. e.g. robustness, handler for cyclical structures and better support for more kinds of object 4. we can replay the log messages in a simulated html console like LogRocket by implementing the interface "ReplayLogger" in the future * improve: the stringify function 1. handle cyclical structures 2. add stringify option to limit the length of result 3. handle function type * refactor: simplify the type definition of ReplayLogger
rrweb
The new adventure of the rrweb community
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rrweb refers to 'record and replay the web', which is a tool for recording and replaying users' interactions on the web.
Currently, rrweb has already solved many difficult problems in recording and replaying, but the data structure may still be changed before the release of Version 1.0. So please be cautious to use rrweb in the production environment.
Guide
📚 Read the rrweb guide here. 📚
Project Structure
rrweb is mainly composed of 3 parts:
- rrweb-snapshot, including both snapshot and rebuilding features. The snapshot is used to convert the DOM and its state into a serializable data structure with a unique identifier; the rebuilding feature is to rebuild the snapshot into corresponding DOM.
- rrweb, including two functions, record and replay. The record function is used to record all the mutations in the DOM; the replay is to replay the recorded mutations one by one according to the corresponding timestamp.
- rrweb-player, is a player UI for rrweb, providing GUI-based functions like pause, fast-forward, drag and drop to play at any time.
Roadmap
- rrweb
- handle cross-domain request errors
- record in web worker
- implement transmission data compression
- verify recording in mobile browser
- rrweb-player
- implement efficient progress bar drag and drop control
- add full screen mode
- extensions
- hijack the console API and record corresponding events
- hijack Ajax/fetch API and record request events
- use TraceKit to log exception events
Internal Design
Contribute Guide
Since we want the record and replay sides to share a strongly typed data structure, rrweb is developed with typescript which provides stronger type support.
- Fork the rrweb component repository you want to patch.
- Run
npm installto install required dependencies. - Patch the code and pass all the tests.
- Push the code and create a pull request.
In addition to adding integration tests and unit tests, rrweb also provides a REPL testing tool.