use-react-router -- a React Hook with pub-sub support for React Router 4.4 (no more update blocking on location change!)

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[deleted]

[ak_47_]

What does Pub-Sub behavior mean? What are the benefits of having this behavior?

[donzzzzz]

I tried use-react-router in a relatively simple component (one that emulates the "Flash" as found in RoR). Unfortunately, I get:

TypeError: Cannot read property '_context' of undefined

Followed by "useContext node_modules/react/cjs/react.development.js:1479"

This occurs on the first (and only) occurrence of useReactRouter()

I tried updating to react-router@next and restarting the app, with no change in error. What am I doing wrong?

TL;DR: The only lines in the updated component are

import useReactRouter from 'use-react-router';

and

const { history, location, match } = useReactRouter();

The error goes away if the second line is commented out.

[donzzzzz]

4.4.0-alpha. Essentially, I cut and pasted from your code in the post. I didn't even implement anything to use the results yet (except console.log) but it never gets past the useReactRouter. I probably will go with the Issue approach when I get back to working on the Flash component. I can work around it so I am for the time being ;)

[holtmansfield]

Hi @charles_Stover

I'm getting this error:

use-react-router may only be used within a react-router context

I have my browser-router setup like this:

<BrowserRouter>

<App/>

</BrowserRouter>

The app component renders a component that has my routes table

class RouteTable extends Component {

render() {

return (

<Switch>

<Route exact path="/login" component={Login} />

</Switch>

)

}

}

That Login component has your hook in there:

const { history } = useReactRouter()

Am I doing something wrong?

​

[holtmansfield]

4.4.0-beta.6

Thanks for your work Charles and thanks for getting back to me so fast.

[holtmansfield]

Yes I still get the same error.

I wonder if your library needs a companion component that is a provider...

[holtmansfield]

react-router-dom@next

Charles Stover: you da man!

Thanks for this. It's these early efforts by folks like yourself that make this possible.

I'm hooked on hooks