Why does the then() where it says console.log('THIS COMES BEFORE THE WRITING AND EXTRACTING'); statement come before the writing and extracting to PDFs? I'm new to Promises, so I am a bit confused by this. I want that then() statement to happen AFTER the writing and parsing happens.
function writeToPDF(data, fileName) {
return new Promise((resolve, reject) => {
data.pipe(fs.createWriteStream(fileName), err => {
reject();
});
data.on('end', () => {
resolve();
})
});
}
function extractPDF(pdf) {
return new Promise((resolve, reject) => {
extract(pdf, {splitPages: false}, (err, text) => {
if (err) {
console.log(err);
} else {
resolve(text);
}
});
});
}
request(link).then((success, failure) => {
let fileName = './name-' + Date.now() + '.pdf';
writeToPDF(data, fileName).then(() => {
extractPDF(fileName).then((text) => {
arrayOfDocuments.push(text);
})
}, () => {
//handle error
});
}).then(() => {
console.log('THIS COMES BEFORE THE WRITING AND EXTRACTING');
});