ReferenceError: window is not defined in React

user_5063789 0
Viewed 8848

I installed "react-speech" package for my application to build text to speech functionality. But while importing the package I'm getting the following error. I did enough googling to resolve this issue but unable to do so. Any help is much appreciated.

Error:

ReferenceError: window is not defined

    at new SpeakTTS (/Users/moharja/Project/React-master/node_modules/speak-tts/lib/speak-tts.js:22:48)

    at Object.<anonymous> (/Users/moharja/Project/React-master/src/components/Judgement/Landing/RightBar/Top/top.component.jsx:24:16)

    at Module._compile (internal/modules/cjs/loader.js:1201:30)

    at Module._compile (/Users/moharja/Project/React-master/node_modules/pirates/lib/index.js:99:24)

    at Module._extensions..js (internal/modules/cjs/loader.js:1221:10)

    at Object.newLoader [as .jsx] (/Users/moharja/Project/React-master/node_modules/pirates/lib/index.js:104:7)

    at Module.load (internal/modules/cjs/loader.js:1050:32)

    at Function.Module._load (internal/modules/cjs/loader.js:938:14)

    at Module.require (internal/modules/cjs/loader.js:1090:19)

    at require (internal/modules/cjs/helpers.js:75:18)

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! lm-suite-react@0.1.0 start: `rimraf build && webpack --mode production --progress --profile --color && node index.js`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the lm-suite-react@0.1.0 start script.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.



npm ERR! A complete log of this run can be found in:

npm ERR!     /Users/moharja/.npm/_logs/2020-10-19T17_30_09_085Z-debug.log `

Note: I tried to use different packages too instead of "react-speech". But the same error is occurring.

npm reactjs web node.js javascript
3 Answers

This library is not compatible with SSR (Server Side Rendering). I guess you are trying to do that with, webpack.

if (typeof window === 'undefined') {
  global.window = {}
}

I guess this might not throw any error, remember you have to declared this before you import the library.

user_10979720

I don't know anything about the react-speech package. But I encountered something similar while trying to bundle one of my modules for browser using webpack (bundle process runs on node and window is undefined in that context). This is what I used:

let win
try {
  win = window
} catch (error) {
  // suppress the Reference error and assign an empty object to win
  // this should not be reachable in actual browser as window 
  // will be defined in that context.

  win = {} 
}

We are doing this just so that webpack builds the module without throwing.

... 
// replace window with win

// window.fetch(...)
win.fetch(...)

Since you are trying to use a library maintained by someone else, you could either try to build it on your own, or you could raise an issue for the package maintainers.

user_57121250

add this line let window = window || global.window this gives the window global.window's value when the window is not defined

user_142371100
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