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

let dataBuffer = fs.readFileSync('path to PDF file...');

pdf(dataBuffer).then(function(data) {

    // number of pages
    console.log(data.numpages);
    // number of rendered pages
    console.log(data.numrender);
    // PDF info
    console.log(data.info);
    // PDF metadata
    console.log(data.metadata); 
    // PDF.js version
    // check https://mozilla.github.io/pdf.js/getting_started/
    console.log(data.version);
    // PDF text
    console.log(data.text); 
        
});

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

let dataBuffer = fs.readFileSync('path to PDF file...');

pdf(dataBuffer).then(function(data) {
    // use data
})
.catch(function(error){
    // handle exceptions
})

function render_page(pageData, ret) {
    //check documents https://mozilla.github.io/pdf.js/
    ret.text = ret.text ? ret.text : "";

    let render_options = {
        //replaces all occurrences of whitespace with standard spaces (0x20).
        normalizeWhitespace: true,
        //do not attempt to combine same line TextItem's.
        disableCombineTextItems: false
    }

    return pageData.getTextContent(render_options)
        .then(function(textContent) {
            let strings = textContent.items.map(item => item.str);
            let text = strings.join(' ');
            ret.text = `${ret.text} ${text} \n\n`;
        });
}

let options = {
    pagerender: render_page
}

let dataBuffer = fs.readFileSync('path to PDF file...');

pdf(dataBuffer,options).then(function(data) {
    //use new format
});

const DEFAULT_OPTIONS = {
    // internal page parser callback
    // you can set this option, if you need another format except raw text
    pagerender: render_page,
    // max page number to parse
    max: 0,
    //check https://mozilla.github.io/pdf.js/getting_started/
    version: 'v1.9.426'
}