Hi Aruna, +1 for the approach. We have faced a similar issue in Product SP and tested the above-mentioned fix in our local environment. It is working fine.
Thanks, Nisala On Thu, Feb 15, 2018 at 12:04 PM, Aruna Herath <aru...@wso2.com> wrote: > Loading multiple copies of React in the same page creates problems > <https://reactjs.org/warnings/refs-must-have-owner.html#multiple-copies-of-react>, > such as errors with discriptions like "Element ref was specified as a > string (myRefName) but no owner was set. You may have multiple copies of > React loaded." > > In our dashboards, we have widgets that can be added by dragging and > dropping. Since it should be possible to add widgets without building the > whole app, widgets are bundled separate to the parent app. How ever this > means react is bundled with both the widget and the parent app. > > Adding react as a peerDep doesn't resolve this, as peerDeps only makes > sense if we add the widget as a dependency of the parent app and build the > parent app only. > > To resolve this something we can do is to export React to the global scope > and allow widgets to use this global reference to React. So we don't have > to bundle React with widgets. > > To put React into global context in the parent dashboard app we can do, > > import React from 'react' > global.React = React > > in the widget to use this global React ref instead of bundling use webpack > externals <https://webpack.js.org/configuration/externals/>. > > webpack config should be, > > externals: { > react: 'React' > } > > Instead of the variable name 'React' we can even use some other name like > 'CarbonDashboardReactGlobalRef' > to avoid possible conflicts. > > -- > Aruna Herath > Senior Software Engineer | WSO2 > Mobile: 0711 051 799 | 0774 569 555 > > <http://wso2.com/signature> > > _______________________________________________ > Dev mailing list > Dev@wso2.org > http://wso2.org/cgi-bin/mailman/listinfo/dev > > -- *Nisala Niroshana Nanayakkara,* Software Engineer Mobile | +94 717600022 WSO2 Inc | http://wso2.com/
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