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How to use the writeFileSync function from fs-extra

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

fs-extra.writeFileSync is a method in Node.js that writes data to a file in a synchronous manner.

headlamp-plugin.js

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  errorOnExist: true,
  overwrite: false,
});

function replaceFileVariables(path) {
  fs.writeFileSync(
    path,
    fs
      .readFileSync(path, 'utf8')
      .split('$${name}')

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fixtures.js

GitHub: thumbsup/thumbsup

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exports.createTempStructure = function (files) {
  const tmpdir = tmp.dirSync({ unsafeCleanup: true }).name
  _.each(files, (content, filepath) => {
    fs.ensureFileSync(`${tmpdir}/${filepath}`)
    fs.writeFileSync(`${tmpdir}/${filepath}`, content)
  })
  return tmpdir
}

649

+ 9 other calls in file

How does fs-extra.writeFileSync work?

fs-extra.writeFileSync is a method used in Node.js to write data to a file. It works similar to the standard fs.writeFileSync() method but provides additional functionality such as creating intermediate directories and preserving file metadata. The method is synchronous, meaning it will block the Node.js event loop until the write operation is complete.

cli.ts

GitHub: remix-pwa/remix-pwa

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} else if (worker.includes("entry.worker") && cache == "jit") {
  const workerDir = path.resolve(projectDir, `${dir}/${worker}`);
  const fileContent = fse.readFileSync(`${appDir}/${worker}`);
  fse.existsSync(workerDir) && workerDir.includes(fileContent)
    ? null
    : fse.writeFileSync(workerDir, fileContent.toString());
} else if (worker.includes("precache.worker") && cache == "pre") {
  const workerDir = path.resolve(projectDir, `${dir}/entry.worker.${lang}`);
  const fileContent = fse.readFileSync(`${appDir}/${worker}`);
  fse.existsSync(workerDir) && workerDir.includes(fileContent)

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+ 161 other calls in file

create-extension-pack.js

GitHub: eclipse-theia/vscode-builtin-extensions

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const licensePath = path.join(packFolderPath, 'LICENSE.txt');
const readmePath = path.join(packFolderPath, 'README.md');

fs.writeFileSync(packJsonPath, JSON.stringify(extPack, null, 2), 'utf-8');
console.log('Generated ' + packageJson + ' file at: ' + packJsonPath);
fs.writeFileSync(licensePath, generateLicense());
fs.writeFileSync(readmePath, generateReadme());

await vsce.createVSIX({
    'cwd': packFolderPath,

+ 5 other calls in file

Ai Example

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

try {
  fs.writeFileSync("example.txt", "Hello, world!");
  console.log("File written successfully.");
} catch (err) {
  console.error(err);
}

In this example, we use fs-extra.writeFileSync to write the string 'Hello, world!' to a file named example.txt in the current working directory. If the file already exists, its contents will be overwritten. If the file does not exist, it will be created. If an error occurs, it will be caught and logged to the console.

project.js

GitHub: o1-labs/zkapp-cli

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  `
buildModules: ["nuxt-vite",
  `
);

fs.writeFileSync(path.join('ui', 'nuxt.config.js'), newNuxtConfig);

// Add vite as a devDependency in the nuxt UI project.
let pkgJson = fs.readJSONSync(path.join('ui', 'package.json'));
pkgJson.devDependencies['nuxt-vite'] = '0.*';

+ 168 other calls in file

imageCompare.js

GitHub: klassijs/klassi-js

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this.expected = 0.2 || expected; // misMatchPercentage tolerance default 0.3%
if (!fs.existsSync(baselinePath)) {
  // create new baseline image if none exists
  console.log('\t WARNING: Baseline image does NOT exist.');
  console.log(`\t Creating Baseline image from Result: ${baselinePath}`);
  fs.writeFileSync(baselinePath, fs.readFileSync(resultPathPositive));
}
resemble.outputSettings({
  errorColor: {
    red: 225,

cli.ts

GitHub: remix-pwa/remix-pwa

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// Acknowledge SW in the browser
const RootDir = projectDir + `/${dir}/root.` + lang + "x";
const remoteSWHook: string = fse.readFileSync(appDir + "/utils/client/sw-hook." + lang).toString();

fse.mkdirSync(projectDir + `/${dir}/utils/client`, { recursive: true });
fse.writeFileSync(projectDir + `/${dir}/utils/client/sw-hook.` + lang, remoteSWHook);

let RootDirContent: string = fse.readFileSync(RootDir).toString();
const swHook = "useSWEffect()";

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+ 49 other calls in file

ui.js

GitHub: mafiosnik777/enhancr

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    // autosave container in project file
    var currentProject = sessionStorage.getItem("currentProject");
    const data = JSON.parse(fs.readFileSync(currentProject));
    data.interpolation[0].outputContainer = ".mp4";
    fs.writeFileSync(currentProject, JSON.stringify(data, null, 4));
    console.log("Output container written to project file.");
});


mkvOption.addEventListener("click", function () {

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+ 209 other calls in file

interpolation.js

GitHub: mafiosnik777/enhancr

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    tileHeight: (document.getElementById("tile-res").value).split('x')[1],
    tileWidth: (document.getElementById("tile-res").value).split('x')[0]
};
let data = JSON.stringify(json);
// write data to json
fse.writeFileSync(jsonPath, data, (err) => {
    if (err) {
        console.log("Error writing file", err);
    };
});

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+ 2 other calls in file

settings.js

GitHub: pmlrsg/GISportal

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   if (standard_name && display_name) {
      dict = '{"' + standard_name + '":{"displayName":["' + display_name + '"], "tags":[' + JSON.stringify(tags) + ']}}';
   } else {
      dict = "{}";
   }
   fs.writeFileSync(dict_path, dict);
} else {
   dict = JSON.parse(fs.readFileSync(dict_path));
   if (!dict[standard_name]) {
      dict[standard_name] = {};

+ 19 other calls in file

hardhat.utils.js

GitHub: sense-finance/sense-v1

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// Remove __CACHE_BREAKER library from solcInput
const path = `${__dirname}/deployments/${hre.network.name}/solcInputs`;
fs.readdirSync(path).forEach(file => {
  var m = JSON.parse(fs.readFileSync(`${path}/${file}`).toString());
  delete m?.settings?.libraries[""]?.__CACHE_BREAKER__;
  fs.writeFileSync(`${path}/${file}`, JSON.stringify(m));
});

console.log("Waiting 30 seconds for Etherscan to sync...");
await delay(30);

+ 2 other calls in file

index.js

GitHub: sp-ricard-valverde/github-act-cache-server

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    // .meta file contains the contentRange value and will be used to order and merge .part files
    const metaFile = file + PART_META_EXT;
    console.log(`Writing range ${contentRange} to ${metaFile}`);
    fs.writeFileSync(`${path.normalize(metaFile)}`, contentRange, {encoding: 'utf-8'});
    console.log(`Write file part to ${file}`);
    fs.writeFileSync(`${path.normalize(file)}`, body);
}


function getPartFile (cacheId, contentRange) {
    const tmpPartPaths = `${PART_PREFIX}${cacheId}`;

+ 3 other calls in file

mcu_plugin.js

GitHub: ralphwetzel/node-red-mcu-plugin

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}

let m = manifest.get();

// Write the (root) manifest.json
fs.writeFileSync(path.join(dest, "manifest.json"), manifest.get(), (err) => {
    if (err) {
        throw err;
    }
});

+ 49 other calls in file

mcu_plugin.js

GitHub: ralphwetzel/node-red-mcu-plugin

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}

// check _mcu for any manifest information defind
if (n._mcu?.manifest?.trim?.().length > 0) {
    // Write the flow's manifest.json
    fs.writeFileSync(path.join(dest, `manifest_${n.id}.json`), n._mcu.manifest.trim(), (err) => {
        if (err) {
            throw err;
        }
    });

+ 49 other calls in file

generateCertificate.js

GitHub: navgurukul/sansaar

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const { Certificate } = this.server.models();
const read = await Certificate.query().where({ user_id });
if (read.length === 1) {
  return [null, read[0].url];
}
fs.writeFileSync(filePath, fileData);
// read certificate from /lib/helpers/assets/pdf
fileData = fs.readFileSync(filePath);
try {
  await S3Bucket.putObject({

+ 3 other calls in file

index.js

GitHub: MarkBind/markbind

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    footer,
    siteNav,
  });
  const layoutOutputPath = path.join(this.rootPath, LAYOUT_FOLDER_PATH, LAYOUT_DEFAULT_NAME);

  fs.writeFileSync(layoutOutputPath, renderedLayout, 'utf-8');
}

/**
 * Builds a site navigation file from the directory structure of the site.

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+ 6 other calls in file

manifest.js

GitHub: ralphwetzel/node-red-mcu-plugin

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    }
}

if (changed === true) {
    fs.ensureDirSync(path.dirname(mnfst_path));
    fs.writeFileSync(mnfst_path, bldr.get(), (err) => {
        if (err) {
            throw err;
        }
    });

+ 19 other calls in file

build.js

GitHub: microsoft/devicescript

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    return ""
})
srvcfg = srvcfg.replace(m[0], startServ + m[0])
srvcfg = "// auto-generated! do not edit here\n" + srvcfg

fs.writeFileSync(join(folder, serversname), srvcfg)

const files = fs.readdirSync(folder)
files.sort((a, b) => (a < b ? -1 : a > b ? 1 : 0))

+ 99 other calls in file

client.js

GitHub: prabathLK/PRABATH-MD

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setInterval(() => {



    fs.writeFileSync(__dirname + "/database.json", JSON.stringify(global.db, null, 2));



}, 10000);

+ 23 other calls in file

generate.js

GitHub: figment-networks/figment-documentation

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    }

    process()
  `;


  fs.writeFileSync("corstests.js", testScript, "utf-8");
}


(function process() {
  const schemas = loadSchemas();

+ 15 other calls in file

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