Node js does not parse the csv file using fast-csv library

Question

I'm using the fast-csv node library to parse a csv-file named myFile.csv. The code looks like this:

var csv = require("fast-csv");
var fs = require("fs");
var stream = fs.createReadStream('myFile.csv');
                csv
                    .fromStream(stream, {headers : true})
                    .on("data", function(data){
                         console.log("Start of parsing...");
                         console.log(data);
                    })
                    .on("end", function(data){
                         console.log(data);
                         console.log("End of parsing");
                    })

When I run it, I see the following two lines in node console:

1
End of parsing

It doesn't print "Start of parsing..." or any data from the csv file. What could be the reason for that? Thanks in advance!

Vicente Olivert Riera · Accepted Answer · 2016-08-08 18:15:48Z

0

Put the csv into a variable and then use stream.pipe() with it. Like this:

var csvStream = csv
                .fromStream(stream, {headers : true})
                .on("data", function(data) {
                    console.log("Start of parsing...");
                    console.log(data);
                })
                .on("end", function(data){
                    console.log(data);
                    console.log("End of parsing");
                });

stream.pipe(csvStream);

answered Aug 8, 2016 at 18:15

Vicente Olivert Riera

1,27010 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

D. Singh Over a year ago

Your suggestion is another way of writing the same code. I had some other problem with my code. I was running the 0.2.0 version of the fast-csv module. I updated it to the latest version 2.1.0 and now my old code as well as the one you suggested work perfectly fine. Thanks!

D. Singh · Accepted Answer · 2016-08-10 18:38:53Z

0

Just reinstall fast-csv module by using the following command:

npm install fast-csv --save

answered Aug 10, 2016 at 18:38

D. Singh

311 silver badge4 bronze badges

1 Comment

Vicente Olivert Riera Over a year ago

The solution is not reinstall fast-csv, the solution is to use a version which accepts that syntax.

Tyler2P · Accepted Answer · 2023-06-09 14:55:39Z

0

Verify the types array in your tsconfig.json: Confirm that the types array in your tsconfig.json file includes the csv-parser entry. Double-check the spelling and casing to ensure it matches the package name exactly. Here's an example of how the updated types array should look: TypeScript:

"types": [
  "node",
  "webpack-env",
  "fast-csv"
]

edited Jun 9, 2023 at 14:55

Tyler2P

2,37030 gold badges26 silver badges34 bronze badges

answered Jun 8, 2023 at 20:08

Jaisa Ram Jangid

11 bronze badge

Collectives™ on Stack Overflow

Node js does not parse the csv file using fast-csv library

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related