[英]How to instantiate and use the Chirp WebAssembly SDK in a Next.js app?
Next.js並不是使用chirp-js-sdk
問題,但是由於我的應用程序需要在瀏覽器中接收chirp
發送的數據,因此我不得不使用WebAssembly SDK。 我在哪里以及如何實例化和使用chirpsdk
?
我曾在設置它的解釋沒有問題在這里 。 但是,不會調用onReceived
和onReceiving
回調。
這是我正在使用chirpsdk
的頁面的chirpsdk
。
class AttendEvent extends Component {
static async getInitialProps({req, query, res}) {
return {
attendString: query
}
}
constructor() {
super();
this.sdk = null;
this.state = {
user: '',
started: false,
waiting: false,
receiving: false,
received: 'Awaiting messages..',
disabled: false
}
}
toAscii(payload) {
let str = ''
for (let i = 0; i < payload.length; i++) {
str += String.fromCharCode(payload[i])
}
return str
}
async startSDK() {
this.sdk = await import ('../node_modules/chirpsdk/index').then( ({Chirp}) => {
return Chirp({
key: CHIRP_API_KEY,
onReceiving: () => {
console.log('Receving Data');
this.setState({
...this.state,
received: '...',
disabled: true
})
},
onReceived: data => {
console.log("Received Data");
if (data.length > 0) {
this.setState({
...this.state,
received: this.toAscii(data),
disabled: false
})
} else {
this.setState({
...this.state,
received: `I didn't hear that. Try turning the volume up?`,
disabled: false
})
}
}
})
})
this.setState({
...this.state,
started: true
})
}
componentDidMount() {
loadFirebase().auth().onAuthStateChanged(user => {
if (user) {
this.setState({
...this.state,
user: user
})
return user
.getIdToken()
.then(token => {
return fetch('/api/login', {
method: 'POST',
headers: new Headers({ 'Content-Type': 'application/json' }),
credentials: 'same-origin',
body: JSON.stringify({ token })
})
})
} else {
Router.push('/');
}
})
this.setState({
...this.state,
waiting: true
})
}
handleLogout() {
loadFirebase().auth().signOut()
}
render() {
const { classes } = this.props;
return (
<React.Fragment>
<Navbar page="AttendEvent" />
{
this.state.user !== null ? (
<Grid
container
spacing={0}
direction="row"
alignItems="center"
justify="center"
style={{ minHeight: '90vh' }}
>
<Typography variant="h1">
{
this.state.waiting ? "Waiting for code..." : (this.state.receiving ? "Receiving code...": (this.state.received ? this.state.received : "Mounting...") )
}
</Typography> <br/>
<Button variant="contained" color="primary" onClick={() => {
this.startSDK()
}}>
START
</Button>
</Grid>) : true
}
</React.Fragment>);
}
}
我希望在接收16kHz-mono
音頻消息時調用onReceived
回調,但未調用它。
找到了我自己的問題的解決方案,這似乎很好。
問題在於動態導入和承諾的處理方式。
async startSDK() {
this.sdk = await import ('../node_modules/chirpsdk/index')
.then(({Chirp}) => {
return Chirp ({
// rest of the initialisation parameters
})
)
.catch( error => {
console.log(error.message);
}
this.setState({
...this.state,
started: true
})
}
它應該完成的方式。 雖然,也可以使用then..catch
完成。
async startSDK(){
try {
const chirp = await import('../node_modules/chirpsdk/index');
const { Chirp } = chirp;
this.sdk = await Chirp ({
// rest of the initialisation parameters
)}
}
catch (err) {
console.log(err);
}
this.setState({
...this.state,
started: true
})
}
關於使用動態導入的說明
起初,我以為Next.js將處理的進口chirpsdk
正如反應一樣。 但是,我想由於Next的SSR特性,導入無法按預期進行,這是拋出的錯誤:
Assertion failed: undefined
Assertion failed: undefined
abort("Assertion failed: undefined") at Error
at /Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:10515
at z (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:10647)
at sn (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:75732)
at O (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:5568)
at Ne (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:14094)
at /Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:22110
at Object.openDatabase (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:21497)
at Object.staticInit (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:21983)
at /Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:27857
at E.locateFile (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:131)
at Object.<anonymous> (/Users/warrenwhite/Documents/MajorProj/faculty-dashboard-app-ssr/node_modules/chirpsdk/index.js:1:226)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
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