TypeError [ERR_INVALID_ARG_TYPE]: The "cb" argument must be of type function. Received undefined

[brentreeves]

MAC OS M1 Ventura 13.4.1

npm run test is happy:
11 input files 11 success 0 fail 0 warning
pdf2json@3.0.4 [https://github.com/modesty/pdf2json]: 479.797ms

./pdf/va/form : Expected: NO Exception, All Parsed OK

It takes 8 seconds to process all PDFs ...

but the json example is not:

`╰─⠠⠵ node bnr_01.js
node:internal/validators:440
throw new ERR_INVALID_ARG_TYPE(name, 'Function', value);
^

TypeError [ERR_INVALID_ARG_TYPE]: The "cb" argument must be of type function. Received undefined
at maybeCallback (node:fs:177:3)
at Object.writeFile (node:fs:2272:14)
at PDFParser. (file:///Users/bnr01a/Documents/data/projects_current/pdf2json/bnr_01.js:8:8)
at PDFParser.emit (node:events:511:28)
at #onPDFJSParseDataReady (file:///Users/bnr01a/Documents/data/projects_current/pdf2json/node_modules/pdf2json/pdfparser.js:53:9)
at PDFJSClass. (file:///Users/bnr01a/Documents/data/projects_current/pdf2json/node_modules/pdf2json/pdfparser.js:69:77)
at PDFJSClass.emit (node:events:511:28)
at file:///Users/bnr01a/Documents/data/projects_current/pdf2json/node_modules/pdf2json/lib/pdf.js:221:38
at process.processTicksAndRejections (node:internal/process/task_queues:77:11) {
code: 'ERR_INVALID_ARG_TYPE'
}

Node.js v20.3.1

╭─~/Documents/data/projects_current/pdf2json on master✘✘✘ 23-07-26 10:43
╰─⠠⠵ cat bnr_01.js
import fs from "fs";
import PDFParser from "pdf2json";

const pdfParser = new PDFParser();

pdfParser.on("pdfParser_dataError", errData => console.error(errData.parserError) );
pdfParser.on("pdfParser_dataReady", pdfData => {
fs.writeFile("./test/bnr_01.json", JSON.stringify(pdfData));
});

pdfParser.loadPDF("./bnr_01.pdf")`

[Roxza]

"fs.writeFileSync("./test/bnr_01.json", JSON.stringify(pdfData));" you can edit the code in this way.

[alimustafa-poder]

This is an error in the docs of this library. fs.writeFile expects a callback and because you are not passing it, it throws an error. To fix this issue you need to define your above function like this:
fs.writeFile("./test/bnr_01.json", JSON.stringify(pdfData), (data) => { console.log(data)})
Replace your fs.writeFile line with the above and your code will work.

[abancp]

this error coming when you forget a callback function .
eg
fs.unlink('./image.jpg') error
fs.unlink('./imgae',(err)=>{console.log(err)}) This is right way

[AJK-web]

For my case , cb argument not define was just a comma "," mistake when i was declaring my arguments in the fs.writeFile() check if you accedently put a dot instead of a comma ","