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Uncaught TypeError: exists is not a function

See original GitHub issue

I’m trying to include node-ffi in a simple webpack app.

Uncaught TypeError: exists is not a function
    at Function.getRoot (bundle.js:19867)
    at bindings (bundle.js:19769)
    at Object.<anonymous> (bundle.js:3045)
    at Object.<anonymous> (bundle.js:4503)
    at __webpack_require__ (bundle.js:1303)
    at fn (bundle.js:726)
    at Object.exports.byteLength (bundle.js:39099)
    at __webpack_require__ (bundle.js:1303)
    at fn (bundle.js:726)
    at Object.<anonymous> (bundle.js:39072)

I’m fairly certain this is because of an earlier problem I was having with webpack:

ERROR in ./node_modules/ffi/node_modules/bindings/bindings.js
Module not found: Error: Can't resolve 'fs' in '/Users/ethan/Projects/PolyWrite/node_modules/ffi/node_modules/bindings'
 @ ./node_modules/ffi/node_modules/bindings/bindings.js 6:9-22
 @ ./node_modules/ffi/lib/bindings.js
 @ ./node_modules/ffi/lib/ffi.js
 @ ./javascript/app/components/Header.js
 @ ./javascript/app/App.js
 @ ./javascript/start.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./javascript/start.js ./styles/main.scss

ERROR in ./node_modules/ffi/node_modules/ref/node_modules/bindings/bindings.js
Module not found: Error: Can't resolve 'fs' in '/Users/ethan/Projects/PolyWrite/node_modules/ffi/node_modules/ref/node_modules/bindings'
 @ ./node_modules/ffi/node_modules/ref/node_modules/bindings/bindings.js 6:9-22
 @ ./node_modules/ffi/node_modules/ref/lib/ref.js
 @ ./node_modules/ffi/lib/ffi.js
 @ ./javascript/app/components/Header.js
 @ ./javascript/app/App.js
 @ ./javascript/start.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./javascript/start.js ./styles/main.scss

My solution to this was to add these lines to the webpack.config.js:

node: {
  fs: 'empty',
},

So now I don’t know where to go from here. I appreciate any help.

Issue Analytics

State:
Created 6 years ago
Reactions:1
Comments:5 (1 by maintainers)

Top GitHub Comments

1reaction

EthanBogartcommented, Sep 18, 2017

It eventually ended up running when I tried it without webpack. I don’t think they work very well together, unfortunately. Good luck!

0reactions

naveed-31commented, Jun 12, 2019

whats the solution of this ? i am also having this issue

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