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How to use the copyFileSync function from fs

Find comprehensive JavaScript fs.copyFileSync code examples handpicked from public code repositorys.

fs.copyFileSync is a synchronous method in Node.js used to make a copy of a file at a specified destination.

deploy.js

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        'space_tracer-4.10.0-py3-none-any.whl'];
    fs.mkdirSync(destPath);
    for (const fileName of srcFiles) {
        const fileSrcPath = path.join(srcPath, fileName),
            fileDestPath = path.join(destPath, fileName);
        fs.copyFileSync(fileSrcPath, fileDestPath);
    }
}


function main() {

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test-fs-error-messages.js

GitHub: nwjs/node

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  assert.throws(
    () => fs.copyFile(existingFile, nonexistentFile, -1, () => {}),
    validateError
  );
  assert.throws(
    () => fs.copyFileSync(existingFile, nonexistentFile, -1),
    validateError
  );
}

+ 5 other calls in file

How does fs.copyFileSync work?

fs.copyFileSync() is a synchronous method in Node.js that is used to create a copy of the source file in the destination path, and it returns undefined on success, otherwise it throws an error.

preload.js

GitHub: Michael-Vanderford/electron-file-manager

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if (fs.existsSync(destination) == true) {
    alert('this file already exists')

} else {

    fs.copyFileSync(template, destination)
    console.log('done')

    if (fs.existsSync(destination) == true) {

finder.js

GitHub: AxelRothe/wranglebot

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  const newPath = this.join(this.dirname(pathToElement), newName + this.extname(pathToElement));
  return fs.renameSync(pathToElement, newPath);
}

copy(pathToElement, newPath) {
  return fs.copyFileSync(pathToElement, newPath);
}

/**
 * Move a file or folder

Ai Example

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const fs = require("fs");

try {
  // Copy input.txt to output.txt synchronously
  fs.copyFileSync("input.txt", "output.txt");
  console.log("File copied successfully!");
} catch (err) {
  console.error(err);
}

In this example, we first require the built-in Node.js fs module. Then, we use fs.copyFileSync method to copy input.txt to output.txt. Since copyFileSync is synchronous, we need to use try...catch block to catch any errors that may occur during the copy process. If the copy is successful, we print a success message to the console.

MBNDSynchronizer.js

GitHub: rombat/musicbee-navidrome-sync

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  const { paths } = this;
  if (!fs.existsSync('./backups')) {
    fs.mkdirSync('./backups');
  }
  paths.backupFilePath = `./backups/navidrome_${dayjs().format('YYYY-MM-DD_HH-mm-ss')}_backup.db`;
  fs.copyFileSync(paths.dbFilePath, paths.backupFilePath);
  console.log(`DB has been backed up to ${paths.backupFilePath}`);
};

restoreDbFile = async () => {

server1.js

GitHub: Laizhouli/TavernAIColab

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const files = fs.readdirSync(src);
files.forEach(function(file) {
    const filePath = src + '/' + file;
    const stat = fs.statSync(filePath);
    if (stat.isFile()) {
        fs.copyFileSync(filePath, dest + '/' + file);
    } else if (stat.isDirectory()) {
        fs.mkdirSync(dest + '/' + file);
        copyFolder(filePath, dest + '/' + file);
    }

make.js

GitHub: qteatime/kate

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}


function copy(from, to) {
  console.log("-> Copy", from, "->", to);
  FS.mkdirSync(Path.dirname(to), { recursive: true });
  FS.copyFileSync(from, to);
}


const w = new World();

runFlow.js

GitHub: Siykt/react

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    // Set the mtime of the copied file to be same as the original file,
    // so that the above check works.
    fs.utimesSync(destPath, srcStat.atime, srcStat.mtime);
  }
} else {
  fs.copyFileSync(srcPath, destPath);
  fs.utimesSync(destPath, srcStat.atime, srcStat.mtime);
}

console.log(

+ 3 other calls in file

build-npm.js

GitHub: amogod/harMAN

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program.emit(undefined, undefined, undefined, undefined, {
  after: [transformLoadFileStaticallyFromNPM],
});
downlevel('./npmDist', './npmDist/ts3.4', '3.4.0');

fs.copyFileSync('./LICENSE', './npmDist/LICENSE');
fs.copyFileSync('./README.md', './npmDist/README.md');

// Should be done as the last step so only valid packages can be published
const packageJSON = buildPackageJSON();

+ 3 other calls in file

modules.js

GitHub: UGKONG/balanceplay

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const body = req?.body;
const file = req?.files?.FILE;
const fileName = hashNameMaker(file?.name);

if (file) {
  fs.copyFileSync(file?.path, uploadFilesPath + fileName);
}
const fileUrl = file ? `/uploadFiles/${fileName}` : '';

const SQL = `

+ 6 other calls in file

server.js

GitHub: realashleybailey/uptime-kuma

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 * @returns {Promise<void>}
 */
async function initDatabase(testMode = false) {
    if (!fs.existsSync(Database.path)) {
        log.info("server", "Copying Database");
        fs.copyFileSync(Database.templatePath, Database.path);
    }


    log.info("server", "Connecting to the Database");
    await Database.connect(testMode);

main.js

GitHub: MaheshNavghane/pc.learningWD

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    fs.mkdirSync(categoryPath)
}

let fileName = path.basename(srcFilePath)
let destFilePath = path.join(categoryPath, fileName)
fs.copyFileSync(srcFilePath, destFilePath)          // for copy paste
// fs.unlinkSync(srcFilePath)           for cut paste 

console.log(srcFilePath,"belongs to",destFilePath)

server.js

GitHub: Pranitan-witt/seniorproject

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  }
});


app.get('/sendDT', function(req, res){
  console.log(path.resolve(__dirname, '..', 'verifier', 'requests')+'/holder_tr.dt');
  fs.copyFileSync(process.cwd()+'/digitalTranscript/holder_tr.dt', path.resolve(__dirname, '..', 'verifier', 'requests')+'/holder_tr.dt');
  res.render('pages/holder', {
    "fs":fs
  });
});

server.js

GitHub: Pranitan-witt/seniorproject

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if(body){
  jwt.verify(token, body['publickey'], function(err, decoded){
    if(decoded != undefined){
      result = decoded;
      try {
        fs.copyFileSync(process.cwd()+'/requests/holder_tr.dt', process.cwd()+'/approved/holder_tr.dt');
        fs.unlinkSync(process.cwd()+'/requests/holder_tr.dt');
        //file removed
      } catch(err) {
        console.error(err)

snLint.js

GitHub: unsaved/eslint-plugin-sn

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    const targRcFile = "sneslintrc.json";
    if (fs.existsSync(targRcFile)) {
        console.error(`Refusing to overwrite existing '${targRcFile}'`);
        process.exit(255);
    }
    fs.copyFileSync(path.join(__dirname, "resources/sneslintrc.json"), targRcFile);
    console.info(`Created file '${targRcFile}'`);
    process.exit(0);
}
if (yargsDict.g) {

index.js

GitHub: geektech-team/create-starter

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function copy(src, dest) {
  const stat = fs.statSync(src);
  if (stat.isDirectory()) {
    copyDir(src, dest);
  } else {
    fs.copyFileSync(src, dest);
  }
}


function isValidPackageName(projectName) {

index.js

GitHub: arya177/choti_bachhi_ho_kya

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fs.mkdirSync(projectDirectory + "/pages/users", { recursive: true });
fs.mkdirSync(projectDirectory + "/pages/blog", { recursive: true });
fs.mkdirSync(projectDirectory + "/config", { recursive: true });
fs.cpSync(parentDirectory + "/styles", projectDirectory + "/styles", { recursive: true });
fs.copyFileSync(parentDirectory + "/_app.js", projectDirectory + "/pages/_app.js");
fs.copyFileSync(parentDirectory + "/fire-config.js", projectDirectory + "/config/fire-config.js");
fs.copyFileSync(parentDirectory + "/.env.local", projectDirectory + "/.env.local");
exec(`cd ${projectDirectory} && npm init -y`, (error, stdout, stderr) => { });
exec(`cd ${projectDirectory} &&  npm i @emotion/react @emotion/styled @material-ui/core @material-ui/icons @mui/base @mui/icons-material @mui/material classnames firebase immutability-helper lodash react react-dnd react-dnd-html5-backend react-dom react-frame-component react-scripts shortid`, (error, stdout, stderr) => {
  if (error) console.log(error);

+ 4 other calls in file

extension.js

GitHub: camador/nvim_config

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const fs = require('fs');


var currentPanel;


function compileOther(srcPath, dstPath, name) {
    fs.copyFileSync(path.join(srcPath, name), path.join(dstPath, name));
}


function compileCss(srcPath, dstPath, name) {
    let css = fs.readFileSync(path.join(srcPath, name), 'utf8');

model.js

GitHub: pb-it/wing-cms-api

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    }
    // fs.rename fails if two separate partitions are involved
    if (data[str]['force'])
        fs.copyFileSync(tmpFilePath, path.join(localPath, fileName));
    else
        fs.copyFileSync(tmpFilePath, path.join(localPath, fileName), fs.constants.COPYFILE_EXCL);
    fs.unlinkSync(tmpFilePath);
} else {
    if (fileName) {
        if (old && old[str] && old[str] != fileName) {

+ 3 other calls in file

fs-write.js

GitHub: Mike7323/Mike-s-construction

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}


// fs.copyFile
{
  assert.throws(() => {
    fs.copyFileSync(regularFile, path.join(blockedFolder, 'any-file'));
  }, common.expectsError({
    code: 'ERR_ACCESS_DENIED',
    permission: 'FileSystemWrite',
    resource: path.toNamespacedPath(path.join(blockedFolder, 'any-file')),

+ 3 other calls in file

Other functions in fs

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fs.readFileSync is the most popular function in fs (2736 examples)

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