Using promises to open new files

Author: Suhyma

src/data-search.js

@@ -2,7 +2,7 @@
 
 // here we will convert the search.sh script into JS
 import { format, sub } from 'date-fns';
-import fs from 'fs';
+import fs from 'fs/promises';
 import { download, search, sendOutput } from './cli.js';
 
 const CATEGORY_ID = 'alzheimers-disease';
@@ -23,10 +23,7 @@ const OUTPUT_FILE = `${DATA_DIRECTORY}/${CATEGORY_ID}.json`;
 
 // Getting all latest articles from BiorXiv
 console.log(`Fetching from ${BIORXIV_SOURCE} between ${START_DATE} and ${END_DATE}`);
-fs.open(BIORXIV_FILE, 'w', function (err, file) { // consider changing the callback function if needed
-  if (err) throw err;
-  console.log('Saved!');
-});
+fs.open(BIORXIV_FILE, 'w');
 const bioOptions = {
   source: BIORXIV_SOURCE,
   output: BIORXIV_FILE
@@ -35,10 +32,7 @@ const bioData = await download(START_DATE, END_DATE, bioOptions);
 
 // Getting all latest articles from MedrXiv
 console.log(`Fetching from ${MEDRXIV_SOURCE} between ${START_DATE} and ${END_DATE}`);
-fs.open(MEDRXIV_FILE, 'w', function (err, file) {
-  if (err) throw err;
-  console.log('Saved!');
-});
+fs.open(MEDRXIV_FILE, 'w');
 const medOptions = {
   source: MEDRXIV_SOURCE,
   output: MEDRXIV_FILE
@@ -47,10 +41,7 @@ const medData = await download(START_DATE, END_DATE, medOptions);
 
 // Creating a JSON with all the results, both sources combined
 console.log('Combining results...');
-fs.open(COMBINED_FILE, 'w', function (err, file) {
-  if (err) throw err;
-  console.log('Saved!');
-});
+fs.open(COMBINED_FILE, 'w');
 const combinedData = bioData.concat(medData);
 const combinedOptions = {
   output: COMBINED_FILE
@@ -59,10 +50,7 @@ await sendOutput(combinedData, combinedOptions);
 
 // Search for the QUERY keyword in all the downloaded articles & compile the related articles
 const QUERY = 'alzheimer';
-fs.open(OUTPUT_FILE, 'w', function (err, file) {
-  if (err) throw err;
-  console.log('Saved!');
-});
+fs.open(OUTPUT_FILE, 'w');
 const outputOptions = {
   input: COMBINED_FILE,
   output: OUTPUT_FILE