fast-csv | CSV parser and formatter for node | CSV Processing library

 by   C2FO TypeScript Version: 5.0.1 License: MIT

kandi X-RAY | fast-csv Summary

kandi X-RAY | fast-csv Summary

fast-csv is a TypeScript library typically used in Utilities, CSV Processing, Nodejs applications. fast-csv has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

CSV parser and formatter for node
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            kandi-support Support

              fast-csv has a medium active ecosystem.
              It has 1413 star(s) with 207 fork(s). There are 51 watchers for this library.
              There were 1 major release(s) in the last 6 months.
              There are 40 open issues and 238 have been closed. On average issues are closed in 115 days. There are 25 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of fast-csv is 5.0.1

            kandi-Quality Quality

              fast-csv has 0 bugs and 0 code smells.

            kandi-Security Security

              fast-csv has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              fast-csv code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              fast-csv is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              fast-csv releases are available to install and integrate.
              Installation instructions are available. Examples and code snippets are not available.
              It has 64 lines of code, 0 functions and 200 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            fast-csv Key Features

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            fast-csv Examples and Code Snippets

            No Code Snippets are available at this moment for fast-csv.

            Community Discussions

            QUESTION

            Nodejs AWS Lambda s3 getObject method returns nothing
            Asked 2022-Feb-24 at 13:11

            The script used when trying to get contents from the csv stored in the s3 bucket

            ...

            ANSWER

            Answered 2022-Feb-24 at 13:11

            Hey you can try this one:-

            Source https://stackoverflow.com/questions/71252185

            QUESTION

            How can I rescue from Postgresql's COPY command when copying a large CSV file?
            Asked 2022-Jan-11 at 16:30

            I have a feature where I am attempting to copy a very large CSV file into my database. I am using the pg gem to do so very quickly as explained in this article here POSTGRESQL COPY.

            In my schema.rb, I have unique constraints on a model so there are times during the upload process, I'll encounter a PG::UniqueViolation constraint error when attempting to import a file.

            What I need to do is I need to be able to capture this error and once captured, write some code that will log the error and the message along with some other details. The problem I am experiencing is that I am unable to currently capture the exception of writing the data into the file. Below is the following pseudo code:

            ...

            ANSWER

            Answered 2022-Jan-11 at 16:30

            COPY is a single statement and can only apply atomically - even if you are streaming in the data in chunks. By the time you catch the exception, the COPY statement has been aborted, none of the rows prior to the violation occurring will be queryable, and the COPY cannot be resumed. In a case where you have, say, 10 rows, and a single row causes a violation, the only way of getting those other 9 rows present is with an INSERT or a COPY that does not include the problematic row. In practice, this means using single-row inserts, possibly with savepoints so you don't have to do a transaction-per-row.

            Another approach you may want to consider is to COPY into a table with no constraints, use regular DML to duplicate non-violating rows into the real data, and then drop/truncate the table you used for the import.

            But fundamentally, a "resumable, violation-tolerant COPY" just isn't a thing; the statement is the finest-grained level at which an operation can succeed or fail in PG, and COPY is still just one statement.

            Source https://stackoverflow.com/questions/70669800

            QUESTION

            how to fix "invalid instruction" error when running node.js in Docker, with sharp.js lib
            Asked 2021-Dec-28 at 23:35

            When running node.js in Docker, with sharp.js lib I am getting "invalid instruction" error and it exits with code 1.

            This is likely related to "libvips" used by sharp.js, that requires C compiler. I tried using various base Docker images, and so far all get same error. Any suggestion would be helpful.

            Here is minimum reproducible set:

            When const sharp = require("sharp"); is commented out it works.

            When it is included, getting this error Illegal instruction

            Dockerfile

            ...

            ANSWER

            Answered 2021-Dec-28 at 23:35

            This issue is related to CPU instructions used by current version sharp.js lib that are not supported by some older processors. Resolved by setting exact older version of sharp.js lib, based on this useful answer here:

            NodeJS: Illegal instruction (core dumped) Error after using sharp library

            this solved issue

            Source https://stackoverflow.com/questions/70488206

            QUESTION

            How do I write special characters to csv file in node with fast-csv
            Asked 2021-Nov-17 at 16:43

            I have a list that contains German characters and I write to csv file with fast-csv and gives me different characters.

            ...

            ANSWER

            Answered 2021-Nov-17 at 16:43

            This is the Excel issue with guessing a CSV encoding. Just indicate the option writeBOM equals to true, that way Excel can guess that the encoding is UTF-8.
            The most reliable way is to write to XLSX-file directly to avoid such encoding issues.

            Source https://stackoverflow.com/questions/70007426

            QUESTION

            Unable to send data to response after pipeline failed
            Asked 2021-Sep-08 at 06:15

            I'm trying to query some data from mysql, transform it to csv and then finally download it as csv. Goal is to achieve this using streams.

            ...

            ANSWER

            Answered 2021-Sep-08 at 06:15

            By the time the catch block is reached, the socket of the res object has already been destroyed by the pipeline. A pipeline "forwards errors" and destroys the destination if an error occurs in the source or along the intermediate transformations.

            Try the following:

            Source https://stackoverflow.com/questions/69074406

            QUESTION

            Detect duplicate data on csv
            Asked 2021-Aug-31 at 01:28

            With node.js using fast-csv package, I currently have this parsing function, which reads csv file, change headers, go through each row and fire an event based on row data.

            ...

            ANSWER

            Answered 2021-Aug-31 at 01:28

            I've extended my on("end") event with the following and some helper functions under. It works out for now.

            Source https://stackoverflow.com/questions/68979566

            QUESTION

            SequelizeUniqueConstraintError create method add only one row
            Asked 2021-Jul-01 at 15:28

            I am trying to parse a csv file with fast-csv and at the end store all the lines in a database with sequelize

            Here is my script to parse the data:

            ...

            ANSWER

            Answered 2021-Jul-01 at 15:28

            It seems you are getting the same id, because all models in Sequelize are "prepared" once, and your function uuidv4() runs only once. Thus for every row you insert into the DB it will have the same uuid. You could try mitigating it like this:

            Source https://stackoverflow.com/questions/68211922

            QUESTION

            write headers in csv file with fast-csv
            Asked 2021-Jun-29 at 10:30

            I am trying to add headers to my csv file using fast-csv

            my csv file :

            "nina", 24

            "sarah", 25

            ...

            ANSWER

            Answered 2021-Jun-29 at 10:30

            According to the docs here: https://c2fo.github.io/fast-csv/docs/formatting/methods#write, the first parameter to .write is the data rows that you want to write, but you have the options as the first parameter.

            Try something like this:

            Source https://stackoverflow.com/questions/68176647

            QUESTION

            How to identify different input schemas with FastCSV?
            Asked 2021-Jun-25 at 09:29

            The following code works fine with the "Winner" type. The tech is typescript with node streams.

            Sometimes someone uploads a winner-2 type though. I'd like to look at the header and change format type based on the header.

            I could possibly

            • write a function that reads the header and returns the stream based on 'parse'. This is part of a class, so I could set the type. It would take a row and return one.
            • make the specification of Winner|Winner2 and see what happens. Look at the result in transform
            • make an uber winner interface and pull out the values that are set.

            I'm planning on rewriting the headers as there are inconsistencies.

            How to solve the problem of normalising these different CSV inputs into one idealised structure? rxjs?

            ...

            ANSWER

            Answered 2021-Jun-25 at 09:29

            I rewrote the headers in a map function to take schema a and schema b and turn them into the target schema

            Source https://stackoverflow.com/questions/68081765

            QUESTION

            Deploying NodeRED Docker image to Heroku fails, but local build is error free
            Asked 2021-May-24 at 08:54

            We are trying to push a Docker image based on NodeRED to Heroku. Local build and test runs like a charm, but when we deploy it to Heroku, the Docker image build fails. Our docker file is quite simple:

            ...

            ANSWER

            Answered 2021-May-24 at 08:54

            First up, copying settings.js to /usr/app/node-red/.node-red will do nothing as it will be ignored. The usrDir for the Node-RED Docker container is /data so the settings.js needs to be copied to there.

            Second, to install extra nodes add them to the package.json in /data not /usr/src/node-red. Then run npm install ... in the /data directory, this will install the nodes into /data/node_modules.

            If you want to remove any of the core nodes then you need to included their filenames in the nodesExcludes key in the settings.js as follows:

            Source https://stackoverflow.com/questions/67667294

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install fast-csv

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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          • npm

            npm i fast-csv

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            https://github.com/C2FO/fast-csv.git

          • CLI

            gh repo clone C2FO/fast-csv

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            git@github.com:C2FO/fast-csv.git

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