TypeError: parse is not a function on csv-parse

Question

I ran into this issue after setting up a simple app using:

• node v16.13.2
• npm v8.1.2
• csv-parse v5.0.4
  On
• VSCode v1.63.2

Code is:

const parse = require('csv-parse');
const fs = require('fs');

const results = [];

fs.createReadStream('kepler_data.csv')
    .pipe(parse({
        comment: "#",
        columns: true,
    }))
    .on('data', (data) => {
        results.push(data);
    })
    .on('error', (err) => {
        console.log(err);
    })
    .on('end', () => {
        console.log(results);
        console.log('Done!');
    });

Running it resulted in:

index.js:7
    .pipe(parse({
          ^

TypeError: parse is not a function
    at Object.<anonymous> (/home/jadeye/node.js_workspace/PLANETS-PROJECT/index.js:7:11)
    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)

Searching SO gave similar results but no actual solution.

Answer 1

Solution was simple. If parse or any other function is not recognized with node require , try getting the function itself as:

const { parse } = require('csv-parse');

Something worth noting it the color scheme that emphasizes the difference between the const parse color = white , and the usage of the function parse inside pipe = green .

And the colors without error where const { parse } is green , matchin the const call.

Answer 2

Thanks man you saved my day. One thing I just want to know that which color theme you're using so that I can know the same difference that you found out in this problem.

Answer 3

Instead of using

const { parse } = require('csv-parse');

Try Following

const { parse } = require("csv-parse");

Answer 4

get the parse function it self in the csv-parse module by doing const {parse} = require("csv-parse");

and call.pipe(parse())

Answer 5

What worked for me was changing from "csv-parse" to "csv-parser"

Use this in package.json

"csv-parser": "^3.0.0"

Instead of:

"csv-parse": "v5.0.4"

Answer 6

1. Try const {parse} = require('parse') instead of const parse = require('parse') OR
2. Try csv-parse version instead "csv-parse": "^3.0.0" of "csv-parse": "^5.3.0"

csv-parse