How to use audioWorklet.addModule in React?











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I have started trying to create an audio recorder to use in React using the Web Audio API



Here is the code for my Recorder class



import AudioNode from './workletNode'


export default class Recorder {
constructor(context) {

this.context = context
this.recording = false

console.log(context)

context.audioWorklet.addModule('processor.js')
.then(() => {
console.log('added worklet module')

navigator.mediaDevices.getUserMedia({audio: true, video: false})
.then(stream => {
console.log('Have stream')
let microphone = context.createMediaStreamSource(stream)
let wavEncoder = new AudioNode(context)

microphone.connect(wavEncoder).connect(context.destination)
})
})
.catch((e) => {
alert('Error getting audio')
console.log(e)
})
}


record() {
console.log('Start recorder')
this.recording = true
}

stop() {
console.log('Stop recorder')
this.recording = false
}
}


The problem I am having is with this line: context.audioWorklet.addModule('processor.js')



the processor.js file doesn't get added.



and then an error is thrown when it gets to this line:



let wavEncoder = new AudioNode(context)


The error is:



Unhandled Rejection (TypeError): __WEBPACK_IMPORTED_MODULE_0__workletNode___default.a is not a constructor



I've tried the same code outside of react and it is fine. So it is something to do with using audioWorklet.addModule inside react.



Can anyone help?



This is the react component that calls recorder:



import React from 'react'
import {connect} from 'react-redux'
import {Button} from 'semantic-ui-react'
import {injectIntl} from 'react-intl'
import Recorder from './recorder'

class SpeechToTextAudioWorklet extends React.Component {

componentDidMount() {
this.context = null
this.recorder = null
}

startRecorder() {
if (!this.context) {
this.context = new window.AudioContext()
this.recorder = new Recorder(this.context)
} else {
this.context.resume()
}

this.recorder && this.recorder.record()
}

stopRecorder() {
this.recorder && this.recorder.stop()
}

render() {

return (<div>Speech to text

<Button id="start" onClick={() => {
this.startRecorder()
}}>Record</Button>
<Button id="stop" onClick={() => {
this.stopRecorder()
}}>Stop</Button>
<div id="recordingslist"></div>
</div>)
}
}

const mapStateToProps = () => {
return {}
}

export default connect(
mapStateToProps
)(injectIntl(SpeechToTextAudioWorklet))









share|improve this question




























    up vote
    0
    down vote

    favorite












    I have started trying to create an audio recorder to use in React using the Web Audio API



    Here is the code for my Recorder class



    import AudioNode from './workletNode'


    export default class Recorder {
    constructor(context) {

    this.context = context
    this.recording = false

    console.log(context)

    context.audioWorklet.addModule('processor.js')
    .then(() => {
    console.log('added worklet module')

    navigator.mediaDevices.getUserMedia({audio: true, video: false})
    .then(stream => {
    console.log('Have stream')
    let microphone = context.createMediaStreamSource(stream)
    let wavEncoder = new AudioNode(context)

    microphone.connect(wavEncoder).connect(context.destination)
    })
    })
    .catch((e) => {
    alert('Error getting audio')
    console.log(e)
    })
    }


    record() {
    console.log('Start recorder')
    this.recording = true
    }

    stop() {
    console.log('Stop recorder')
    this.recording = false
    }
    }


    The problem I am having is with this line: context.audioWorklet.addModule('processor.js')



    the processor.js file doesn't get added.



    and then an error is thrown when it gets to this line:



    let wavEncoder = new AudioNode(context)


    The error is:



    Unhandled Rejection (TypeError): __WEBPACK_IMPORTED_MODULE_0__workletNode___default.a is not a constructor



    I've tried the same code outside of react and it is fine. So it is something to do with using audioWorklet.addModule inside react.



    Can anyone help?



    This is the react component that calls recorder:



    import React from 'react'
    import {connect} from 'react-redux'
    import {Button} from 'semantic-ui-react'
    import {injectIntl} from 'react-intl'
    import Recorder from './recorder'

    class SpeechToTextAudioWorklet extends React.Component {

    componentDidMount() {
    this.context = null
    this.recorder = null
    }

    startRecorder() {
    if (!this.context) {
    this.context = new window.AudioContext()
    this.recorder = new Recorder(this.context)
    } else {
    this.context.resume()
    }

    this.recorder && this.recorder.record()
    }

    stopRecorder() {
    this.recorder && this.recorder.stop()
    }

    render() {

    return (<div>Speech to text

    <Button id="start" onClick={() => {
    this.startRecorder()
    }}>Record</Button>
    <Button id="stop" onClick={() => {
    this.stopRecorder()
    }}>Stop</Button>
    <div id="recordingslist"></div>
    </div>)
    }
    }

    const mapStateToProps = () => {
    return {}
    }

    export default connect(
    mapStateToProps
    )(injectIntl(SpeechToTextAudioWorklet))









    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have started trying to create an audio recorder to use in React using the Web Audio API



      Here is the code for my Recorder class



      import AudioNode from './workletNode'


      export default class Recorder {
      constructor(context) {

      this.context = context
      this.recording = false

      console.log(context)

      context.audioWorklet.addModule('processor.js')
      .then(() => {
      console.log('added worklet module')

      navigator.mediaDevices.getUserMedia({audio: true, video: false})
      .then(stream => {
      console.log('Have stream')
      let microphone = context.createMediaStreamSource(stream)
      let wavEncoder = new AudioNode(context)

      microphone.connect(wavEncoder).connect(context.destination)
      })
      })
      .catch((e) => {
      alert('Error getting audio')
      console.log(e)
      })
      }


      record() {
      console.log('Start recorder')
      this.recording = true
      }

      stop() {
      console.log('Stop recorder')
      this.recording = false
      }
      }


      The problem I am having is with this line: context.audioWorklet.addModule('processor.js')



      the processor.js file doesn't get added.



      and then an error is thrown when it gets to this line:



      let wavEncoder = new AudioNode(context)


      The error is:



      Unhandled Rejection (TypeError): __WEBPACK_IMPORTED_MODULE_0__workletNode___default.a is not a constructor



      I've tried the same code outside of react and it is fine. So it is something to do with using audioWorklet.addModule inside react.



      Can anyone help?



      This is the react component that calls recorder:



      import React from 'react'
      import {connect} from 'react-redux'
      import {Button} from 'semantic-ui-react'
      import {injectIntl} from 'react-intl'
      import Recorder from './recorder'

      class SpeechToTextAudioWorklet extends React.Component {

      componentDidMount() {
      this.context = null
      this.recorder = null
      }

      startRecorder() {
      if (!this.context) {
      this.context = new window.AudioContext()
      this.recorder = new Recorder(this.context)
      } else {
      this.context.resume()
      }

      this.recorder && this.recorder.record()
      }

      stopRecorder() {
      this.recorder && this.recorder.stop()
      }

      render() {

      return (<div>Speech to text

      <Button id="start" onClick={() => {
      this.startRecorder()
      }}>Record</Button>
      <Button id="stop" onClick={() => {
      this.stopRecorder()
      }}>Stop</Button>
      <div id="recordingslist"></div>
      </div>)
      }
      }

      const mapStateToProps = () => {
      return {}
      }

      export default connect(
      mapStateToProps
      )(injectIntl(SpeechToTextAudioWorklet))









      share|improve this question















      I have started trying to create an audio recorder to use in React using the Web Audio API



      Here is the code for my Recorder class



      import AudioNode from './workletNode'


      export default class Recorder {
      constructor(context) {

      this.context = context
      this.recording = false

      console.log(context)

      context.audioWorklet.addModule('processor.js')
      .then(() => {
      console.log('added worklet module')

      navigator.mediaDevices.getUserMedia({audio: true, video: false})
      .then(stream => {
      console.log('Have stream')
      let microphone = context.createMediaStreamSource(stream)
      let wavEncoder = new AudioNode(context)

      microphone.connect(wavEncoder).connect(context.destination)
      })
      })
      .catch((e) => {
      alert('Error getting audio')
      console.log(e)
      })
      }


      record() {
      console.log('Start recorder')
      this.recording = true
      }

      stop() {
      console.log('Stop recorder')
      this.recording = false
      }
      }


      The problem I am having is with this line: context.audioWorklet.addModule('processor.js')



      the processor.js file doesn't get added.



      and then an error is thrown when it gets to this line:



      let wavEncoder = new AudioNode(context)


      The error is:



      Unhandled Rejection (TypeError): __WEBPACK_IMPORTED_MODULE_0__workletNode___default.a is not a constructor



      I've tried the same code outside of react and it is fine. So it is something to do with using audioWorklet.addModule inside react.



      Can anyone help?



      This is the react component that calls recorder:



      import React from 'react'
      import {connect} from 'react-redux'
      import {Button} from 'semantic-ui-react'
      import {injectIntl} from 'react-intl'
      import Recorder from './recorder'

      class SpeechToTextAudioWorklet extends React.Component {

      componentDidMount() {
      this.context = null
      this.recorder = null
      }

      startRecorder() {
      if (!this.context) {
      this.context = new window.AudioContext()
      this.recorder = new Recorder(this.context)
      } else {
      this.context.resume()
      }

      this.recorder && this.recorder.record()
      }

      stopRecorder() {
      this.recorder && this.recorder.stop()
      }

      render() {

      return (<div>Speech to text

      <Button id="start" onClick={() => {
      this.startRecorder()
      }}>Record</Button>
      <Button id="stop" onClick={() => {
      this.stopRecorder()
      }}>Stop</Button>
      <div id="recordingslist"></div>
      </div>)
      }
      }

      const mapStateToProps = () => {
      return {}
      }

      export default connect(
      mapStateToProps
      )(injectIntl(SpeechToTextAudioWorklet))






      javascript reactjs audio web-audio-api audiocontext






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      edited Nov 8 at 22:19

























      asked Nov 8 at 22:06









      Leo Farmer

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