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How to use the readFile function from fs-promise

Find comprehensive JavaScript fs-promise.readFile code examples handpicked from public code repositorys.

fs-promise.readFile is a function that reads the contents of a file and returns a promise that resolves with the contents of the file as a buffer.

mount.js

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  return this.read()
}


CachedFile.prototype.read = function() {
  var self = this
  return this.updating = fs.readFile(this.path).then(function(content) {
    self.updating = null
    var filter = self.mount.options.filter
    self.data = filter ? filter(self.path, content) : content
    self.mtime = new Date

files.js

GitHub: salil-gtm/SyndiShare

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// String ~> Promise String
//   Reads a file as an UTF8 string.
//   Returns a promise containing that string.
var readUTF8 = function readUTF8(path) {
  return fsp.readFile(path, { encoding: "utf8" });
};


// String ~> Promise Bool
var isDirectory = function isDirectory(path) {

How does fs-promise.readFile work?

fs-promise.readFile works by providing a Promise-based interface to the fs.readFile function in Node.js.

When you call fs-promise.readFile, it returns a Promise that resolves with the contents of the file as a buffer. If the file cannot be read, the Promise will be rejected with an error.

Because fs-promise.readFile returns a Promise, you can use it with the async/await syntax or with .then() and .catch() methods.

One benefit of using fs-promise.readFile over the standard fs.readFile function is that it simplifies error handling by allowing you to use try/catch statements or .catch() methods instead of passing a callback function to handle errors.

By using fs-promise.readFile, you can read the contents of a file in a Promise-based way, which can simplify your code and make it easier to handle errors.

dry.test.js

GitHub: simple-icons/svg-to-pdf-bot

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beforeAll(async () => {
  let configBuffer = await fs.readFile('./test/fixtures/config.yml')
  getConfig = { data: { content: configBuffer.toString('base64') } }

  let iconBuffer = await fs.readFile('./test/fixtures/icon.svg')
  getIcon = { data: { content: iconBuffer.toString('base64') } }

  // Make sure dry run is enabled
  process.env.dry = 'true'

+ 3 other calls in file

newtweet.js

GitHub: himanoa/niwatori

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for (let file of filePath) {
  new Promise((resolve, reject) => {
    const extension = file.split('.').pop()
    resolve({path: file, extension: extension})
  }).then(result => new Promise((resolve, reject) => {
    readFile(file).then(data => {
      result['data'] = data
      resolve(result)
    }).catch(error => {
      reject(error, error.stack)

Ai Example

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const fsp = require("fs-promise");

const filePath = "./example.txt";

fsp
  .readFile(filePath)
  .then((contents) => {
    console.log(`Contents of ${filePath}:`);
    console.log(contents.toString());
  })
  .catch((err) => {
    console.error(`Error reading file: ${err}`);
  });

In this example, we use fs-promise.readFile to read the contents of a file located at ./example.txt. We first import the fs-promise module. We define a variable filePath that contains the path to the file we want to read. We then call fs-promise.readFile and pass in filePath as an argument. This returns a Promise that resolves with the contents of the file as a buffer. We use .then() to handle the Promise when it resolves. Inside the .then() method, we log a message indicating that we are displaying the contents of the file, and then log the contents of the file to the console after converting it to a string using the .toString() method. If an error occurs while attempting to read the file, we catch the error using .catch() and log it to the console. By using fs-promise.readFile, we can read the contents of a file in a Promise-based way, which can simplify our code and make it easier to handle errors.

track.js

GitHub: hoovessound/hs-server-side

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async uploadImage(options, image){
    const req = this.req;
    const res = this.res;
    // Read the file
    try {
        const file = await fsp.readFile(image.path);
        const response = await imgurUploader(file, options);
        res.json(response);
    }
    catch(error){

+ 665 other calls in file

compare.test.js

GitHub: maryvilledev/codesplain

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const res = await prepare_cache[language_name];
const antlr_result = res[0];
const js_parser = res[1];
const t2 = Date.now();

const code = await fs.readFile(code_file, {'encoding': 'utf8'});
const t3 = Date.now();

const treeViaJava = await genTreeViaJava(lang_runtime_config, antlr_result, code);
const t4 = Date.now();

Resource.js

GitHub: itsybitesyspider/oathframe-lib

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    });
};


// Read the text of this file.
File.readText = function() {
  return fs.readFile(this.physicalFilepath(), {encoding:'utf8'})
    .then(contents => {
      console.error('Read: ' + this.filepath()); // eslint-disable-line no-console
      return contents;
    });

+ 3 other calls in file

index.js

GitHub: gdnmobilelab/file-io

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        Key: pathToUpload
    }).promise()
}


const downloadLocal = function(pathToDownload) {
    return fs.readFile(path.join(IO_LOCAL_PATH, pathToDownload), 'UTF-8')
    .catch((err) => {
        if (err.code === 'ENOENT'){
            return null;
        }

+ 3 other calls in file

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