How can I call Web APIs in React JSX?

I'm writing a music player with React and Electron and want to add metadata for the audio so as I can get MPRIS support. So I did some searching and found Media Session API is what I needed. To test it, I copied the code from the exmaple code contained by the above link into a function in my project.

  navigator.mediaSession.metadata = new MediaMetadata({
    title: 'Unforgettable',
    artist: 'Nat King Cole',
    album: 'The Ultimate Collection (Remastered)',
    artwork: [
      { src: 'https://dummyimage.com/96x96',   sizes: '96x96',   type: 'image/png' },
      { src: 'https://dummyimage.com/128x128', sizes: '128x128', type: 'image/png' },
      { src: 'https://dummyimage.com/192x192', sizes: '192x192', type: 'image/png' },
      { src: 'https://dummyimage.com/256x256', sizes: '256x256', type: 'image/png' },
      { src: 'https://dummyimage.com/384x384', sizes: '384x384', type: 'image/png' },
      { src: 'https://dummyimage.com/512x512', sizes: '512x512', type: 'image/png' },
    ]
  });

I put it into a function that a component will call when the next song is played.However, I got errors like this:

Failed to compile.

./src/components/FM/Cover/index.jsx
  Line 112:  'MediaMetadata' is not defined  no-undef

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Why?