TypeError: fs$ReadStream is undefined

[saadb]

using graceful-fs version 4.1.11 in create-react-app with "react-scripts": "1.0.17"

The error above is reported when I run yarn start

./node_modules/graceful-fs/graceful-fs.js:166

163 | }
164 |
165 | var fs$ReadStream = fs.ReadStream

166 | ReadStream.prototype = Object.create(fs$ReadStream.prototype)
167 | ReadStream.prototype.open = ReadStream$open
168 |
169 | var fs$WriteStream = fs.WriteStream

./node_modules/configstore/node_modules/graceful-fs/graceful-fs.js
24 | })
25 | }
26 |

27 | module.exports = patch(require('./fs.js'))
28 | if (process.env.TEST_GRACEFUL_FS_GLOBAL_PATCH) {
29 | module.exports = patch(fs)
30 | }

./node_modules/configstore/node_modules/graceful-fs/graceful-fs.js

1 | var fs = require('fs')
2 | var polyfills = require('./polyfills.js')
3 | var legacy = require('./legacy-streams.js')
4 | var queue = []

Please investigate, why is happening?

[Hertox82]

same issue

[anonymous0374]

fs does not have ReadStream method.

tried on:
nodejs: v8.3, v8.4, v9.4
node-graceful-fs and webpack are of the latest versions

in nodejs v9.4 api documentation, fs object does have ReadStream method, is the fs required in node-graceful-fs the same fs in nodejs?

could someone give a hand?

[anonymous0374]

I bypassed this error by adding these last two lines(comment with "fix"), any risks underneath?
thank you
@isaacs

[anonymous0374]

OK, my mistake. I should use node-graceful-fs in a nodejs environment, instead of in browser via webpack.
I'm setting up a rest api with expressjs to do this(in order to communicate with mongodb server).

[AnelaNuo]

Dear Isaacs,
Could you close issues #109 and this after fixing this bug.
I tried to rewrite two last lines in your code by the above pattern in my local node_modules and solved this problem in React app.
But I finded this precription for a long time, because no one issues not closed.

Best regards, Anela.

[spirosbax]

Here is how I fixed it:

• replace fs.ReadStream with fs.createReadStream in line 165,
• replace fs.WriteStream with fs.createWriteStream in line 169,

this works because in the docs there are create methods for creating streams.

[sumit6b]

@spirosbax was trying your solution but got this error:

Uncaught TypeError: Cannot read property 'require' of undefined
at Proxyquire../node_modules/graceful-ncp/node_modules/proxyquire/lib/proxyquire.js.Proxyquire.load

[coreyfarrell]

This issue should be resolved by latest graceful-fs. Please let us know if you continue to have problems after updating.