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How to use the openSync function from fs-extra

Find comprehensive JavaScript fs-extra.openSync code examples handpicked from public code repositorys.

fs-extra.openSync is a Node.js method that opens a file in a synchronous manner and returns a file descriptor.

datapacksjob.js

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}

await fs.ensureDirSync(folderPath);

let attachmentBody = await this.vlocity.jsForceConnection.request(vplAttachmentRecords[record].Body);
var filePtr = await fs.openSync(filepath, 'w');
await fs.writeSync(filePtr, JSON.stringify(attachmentBody));
await fs.closeSync(filePtr);
let jobInfo_t = JSON.parse(JSON.stringify(jobInfo));
jobInfo_t.buildFile = filepath;

+ 17 other calls in file

Watcher.spec.js

GitHub: albe/node-event-storage

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    watcher.on('rename', (filename) => {
        expect(filename).to.be('.file');
        fs.closeSync(fd);
        done();
    });
    fd = fs.openSync(dataDirectory + '/.file', 'w');
});

it('detects file renames inside a directory', function(done){
    let fd = fs.openSync(dataDirectory + '/.file', 'w');

+ 23 other calls in file

How does fs-extra.openSync work?

fs-extra.openSync is a synchronous method in Node.js that is used to open a file in a specified mode (read-only, write-only, etc.) and returns a file descriptor that can be used to read from or write to the file.

Partition.spec.js

GitHub: albe/node-event-storage

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    expect(() => new Partition()).to.throwError();
    expect(() => new Partition([])).to.throwError();
});

it('throws on opening non-partition file', function() {
    let fd = fs.openSync('test/data/.part', 'w');
    fs.writeSync(fd, 'foobar');
    fs.closeSync(fd);

    expect(() => partition.open()).to.throwError();

+ 29 other calls in file

nodejs.md?plain=1

GitHub: 5102a/My_Growth

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同步处理

```js
const fs = require('fs')
try {
  const fd = fs.openSync('./http.js')
} catch (err) { // 处理错误
  console.error(err)
}
```

+ 13 other calls in file

Ai Example

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const fs = require("fs-extra");

try {
  const fd = fs.openSync("example.txt", "w");
  console.log(`File descriptor: ${fd}`);

  // Do something with the file...

  fs.closeSync(fd); // Close the file
} catch (err) {
  console.error(err);
}

In this example, fs.openSync is used to open the file example.txt in write mode. The function returns a file descriptor, which is used to read from and write to the file. After using the file, fs.closeSync is called to close the file descriptor.

library.js

GitHub: barshociaj/node-red-contrib-js-storage

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  return result;
}


function getFileMeta(root, path) {
  var fn = fspath.join(root, path);
  var fd = fs.openSync(fn, "r");
  var size = fs.fstatSync(fd).size;
  var meta = {};
  var read = 0;
  var length = 10;

customNodeInstaller.js

GitHub: webosose/com.webos.service.contextintentmgr

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let writeJSONToDiskSync = (path, JSONData) => {
    let fd;
    try {
        fs.outputJSONSync(path, JSONData);
        fd = fs.openSync(path, 'rs+');
        fs.fdatasyncSync(fd);
        return true;
    } catch (e) {
        console.log("Exception in writing file", e);

getFiles.bundle.js

GitHub: changpzh/project_zhou

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  } else return
}

const fdr = fs.openSync(srcFile, 'r')
const stat = fs.fstatSync(fdr)
const fdw = fs.openSync(destFile, 'w', stat.mode)
let bytesRead = 1
let pos = 0

while (bytesRead > 0) {

+ 62 other calls in file

create-docker-context-for-node-components.js

GitHub: Project-PLATEAU/UC22-012-development-permission

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    });
} else if (argv.output) {
    const outputPath = path.resolve(process.cwd(), argv.output);
    console.log(outputPath);


    const outputTar = fse.openSync(outputPath, "w", 0o644);


    const tarProcess = childProcess.spawn(
        tar,
        ["--dereference", "-czf", "-", "*"],

markdown_render.js

GitHub: imaiguo/chromium.110.0.5481.77

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curMdFile = inFile;

if (depFile) {
  const depFileDir = path.dirname(depFile);
  fs.ensureDirSync(depFileDir);
  depFileFd = fs.openSync(depFile, 'w');
  fs.write(depFileFd, `${outFile}:`);
}
let markdownHtml = '';
if (inFile) {

util.js

GitHub: nstra9x/herond-core

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},

calculateFileChecksum: (filename) => {
  // adapted from https://github.com/kodie/md5-file
  const BUFFER_SIZE = 8192
  const fd = fs.openSync(filename, 'r')
  const buffer = Buffer.alloc(BUFFER_SIZE)
  const md5 = crypto.createHash('md5')

  try {

+ 5 other calls in file

mixio.js

GitHub: Eason010212/mixio

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const args = process.argv.slice(2)


var startMixIO = function(){
    var parent_exit = function(child){
        var logFile = fs.openSync(logFileName, 'r')
        while(true){
            // check log file for database connection
            var data = fs.readFileSync(logFile, 'utf8')
            if(data[data.length-1] == "\n")

+ 9 other calls in file

localfilesystem.js

GitHub: clives/node-red_multiple-inputs

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var libFlowsDir;
var globalSettingsFile;


function getFileMeta(root,path) {
    var fn = fspath.join(root,path);
    var fd = fs.openSync(fn,"r");
    var size = fs.fstatSync(fd).size;
    var meta = {};
    var read = 0;
    var length = 10;

+ 3 other calls in file

import-enex.js

GitHub: xiafengjieying/joplin

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// force flusing it before close. This is needed because
// "end" might be called before the file has been flushed
// to disk, thus resulting in the calling code to find a
// file with size 0.

const destFile = fs.openSync(destFilePath, 'w');
const sourceStream = fs.createReadStream(sourceFilePath);
const destStream = fs.createWriteStream(destFile, {
	fd: destFile,
	autoClose: false,

+ 3 other calls in file

logger.js

GitHub: platsoft/grape

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this.get_global_log_stream = function(cb) {
	if (!self.global_log_stream)
	{
		var fullname = path.join(self.options.log_directory, 'global.log');

		var fd = fs.openSync(fullname, 'a');
		
		self.global_log_stream = fs.createWriteStream(null, { fd: fd });
		self.global_log_stream.fd = fd;
		cb(self.global_log_stream);

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