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How to use the existsSync function from fs-extra

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

fs-extra.existsSync is a method that checks if a given file or directory exists in the file system.

config.js

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const { appDir } = require('./utils/paths')


const appConfigPath = path.join(appDir, 'config.json')


function getConfigFromFile () {
  const configFileExists = fse.existsSync(appConfigPath)
  if (configFileExists) {
    try {
      return fse.readJsonSync(appConfigPath)
    } catch (e) {

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+ 2 other calls in file

convert.js

GitHub: zapier/zapier-platform

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};


const setupTempWorkingDir = () => {
  let workdir;
  const tmpBaseDir = os.tmpdir();
  while (!workdir || fs.existsSync(workdir)) {
    workdir = path.join(tmpBaseDir, crypto.randomBytes(20).toString('hex'));
  }
  fs.mkdirSync(workdir);
  return workdir;

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How does fs-extra.existsSync work?

fs-extra.existsSync is a method in the fs-extra module that checks whether a file or directory exists on the file system, returning a boolean value indicating its presence or absence. It is a synchronous version of the fs.exists function, with the added functionality of checking for existence of both files and directories. It takes a single parameter, the path to the file or directory that needs to be checked, and returns true if it exists, false otherwise.

applicationize.js

GitHub: eladnava/applicationize

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// Load extension manifest and default icon
yield crx.load(crxPath);

// Do we have a local icon to copy over?
if (crxConfig.icon && fs.existsSync(crxConfig.icon)) {
    // Set target copy path as current extension icon's path
    var copyToPath = crx.path + '/' + crx.manifest.icons['128'];

    // Copy the local file to the current extension's folder, where the icon currently resides

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helper-test.js

GitHub: alexa/ask-cli

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describe("# test helper method - attemptUpgradeUndeployedProject", () => {
  beforeEach(() => {
    sinon.stub(fs, "existsSync");
    fs.existsSync.withArgs(path.join(TEST_ROOT_PATH, CONSTANTS.FILE_PATH.SKILL_PACKAGE.MANIFEST)).returns(true);
    fs.existsSync.withArgs(path.join(TEST_ROOT_PATH, "models")).returns(true);
    fs.existsSync.withArgs(path.join(TEST_ROOT_PATH, "isps")).returns(true);
    fs.existsSync.callThrough();
    sinon.stub(fs, "readJSONSync").returns(formSkillJson("manifest", {endpoint: TEST_ARN}));
    sinon.stub(fs, "removeSync");

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+ 9 other calls in file

Ai Example

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

if (fs.existsSync("/path/to/file")) {
  console.log("File exists!");
} else {
  console.log("File does not exist.");
}

In this example, the code checks whether a file exists at the given path by calling fs.existsSync() with the file path as an argument. If the file exists, the code logs a message indicating so. If the file does not exist, the code logs a different message.

helpers.js

GitHub: electricbookworks/electric-book

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// If translated assets exist, use that path,
// otherwise use the parent assets.
let pathToAssets
if (argv.language &&
          fs.existsSync(pathToTranslatedAssets) &&
          fs.readdirSync(pathToTranslatedAssets).length > 0) {
  pathToAssets = pathToTranslatedAssets
} else {
  pathToAssets = pathToParentAssets

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index.js

GitHub: MarkBind/markbind

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 * Copies over README.md or Home.md to default index.md if present.
 */
async addIndexPage() {
  const indexPagePath = path.join(this.rootPath, INDEX_MARKDOWN_FILE);
  const fileNames = ['README.md', 'Home.md'];
  const filePath = fileNames.find(fileName => fs.existsSync(path.join(this.rootPath, fileName)));
  // if none of the files exist, do nothing
  if (_.isUndefined(filePath)) return;
  try {
    await fs.copy(path.join(this.rootPath, filePath), indexPagePath);

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+ 6 other calls in file

datapacksutils.js

GitHub: vlocityinc/vlocity_build

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    return [{}];
}


DataPacksUtils.prototype.handleDataPackEventSync = function(eventName, dataPackType, input) {
    if (!this[dataPackType] && fs.existsSync(path.join(__dirname, 'datapacktypes', dataPackType.toLowerCase() + '.js'))) {
        let requiredDataPack = require(path.join(__dirname, 'datapacktypes', dataPackType.toLowerCase() + '.js'));
        this[dataPackType] = new requiredDataPack(this.vlocity);
    }

+ 19 other calls in file

headlamp-plugin.js

GitHub: headlamp-k8s/headlamp

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const packageFolders = fs
  .readdirSync(packageFolder, { withFileTypes: true })
  .filter(fileName => {
    return (
      fileName.isDirectory() &&
      fs.existsSync(path.join(packageFolder, fileName.name, 'package.json'))
    );
  });
if (packageFolders.length === 0) {
  console.error(`"${packageFolder}" does not contain a package or packages. Not upgrading.`);

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+ 3 other calls in file

admin-api-v3.js

GitHub: TotallyInformation/node-red-contrib-uibuilder

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case 'checkurls': {
    log.trace(`[uibuilder:adminRouterV3:GET:checkurls] Check if URL is already in use. URL: ${params.url}`)

    /** @returns {boolean} True if the given url exists, else false */
    const chkInstances = Object.values(uib.instances).includes(params.url)
    const chkFolders = fs.existsSync(path.join(uib.rootFolder, params.url))

    res.statusMessage = 'Instances and Folders checked'
    res.status(200).json( chkInstances || chkFolders )

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+ 38 other calls in file

admin-api-v2.js

GitHub: TotallyInformation/node-red-contrib-uibuilder

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const filePathRoot = path.join(uib.rootFolder, params.url, params.folder)
// @ts-ignore
const filePath = path.join(filePathRoot, req.query.fname)

// Does the file exist?
if ( fs.existsSync(filePath) ) {
    // Send back a plain text response body containing content of the file
    res.type('text/plain').sendFile(
        // @ts-ignore
        req.query.fname,

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+ 25 other calls in file

socket.js

GitHub: TotallyInformation/node-red-contrib-uibuilder

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if (uib.configFolder === null) throw new Error('uib.configFolder is undefined')

// Try to load the sioUse middleware function - sioUse applies to all incoming msgs
const mwfile = path.join(uib.configFolder, uib.sioUseMwName)
if ( fs.existsSync(mwfile) ) { // not interested if the file doesn't exist
    try {
        const sioUseMw = require( mwfile )
        if ( typeof sioUseMw === 'function' ) { // if exported, has to be a function
            socket.use(sioUseMw)

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+ 11 other calls in file

spec.js

GitHub: mgol/check-dependencies

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// Our fake jQuery copy contains only package.json but the true one has the /dist/
// sub-directory. We'll use it to check if the `install` command was invoked
// when technically not needed as we require it now always when pruning.
assert.strictEqual(
    fs.existsSync(`${fixtureCopyDir}/${depsDirName}/jquery/dist`),
    false,
);

Promise.all([])

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+ 19 other calls in file

cli.ts

GitHub: remix-pwa/remix-pwa

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  fse.mkdirSync(projectDir + `/${dir}/routes/resources`, { recursive: true });
}

const subscribeContent = fse.readFileSync(appDir + `/routes/resources/subscribe.${lang}`).toString();

fse.existsSync(projectDir + `/${dir}/routes/resources/subscribe.` + lang)
  ? null
  : fse.writeFileSync(projectDir + `/${dir}/routes/resources/subscribe.${lang}`, subscribeContent);

// `/utils/server/pwa-utils.server.ts`

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+ 19 other calls in file

restoration.js

GitHub: mafiosnik777/enhancr

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// inject env hook
let inject_env = !isPackaged ? `"${path.join(__dirname, '..', "\\env\\python\\condabin\\conda_hook.bat")}" && "${path.join(__dirname, '..', "\\env\\python\\condabin\\conda_auto_activate.bat")}"` : `"${path.join(process.resourcesPath, "\\env\\python\\condabin\\conda_hook.bat")}" && "${path.join(process.resourcesPath, "\\env\\python\\condabin\\conda_auto_activate.bat")}"`;

let tmpOutPath = path.join(cache, Date.now() + ".mkv");
if (extension != ".mkv" && fse.existsSync(subsPath) == true) {
    openModal(subsModal);
    terminal.innerHTML += "\r\n[enhancr] Input video contains subtitles, but output container is not .mkv, cancelling.";
    sessionStorage.setItem('status', 'error');
    throw new Error('Input video contains subtitles, but output container is not .mkv');

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+ 9 other calls in file

index.js

GitHub: volumio/volumio3-backend

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var staticMiddlewareManifestUI = express.static(path.join(__dirname, 'www4'));
var staticMiddlewareWizard = express.static(path.join(__dirname, 'wizard'));


app.use(function (req, res, next) {
  var userAgent = req.get('user-agent');
  if (process.env.NEW_WIZARD === 'true' && fs.existsSync(volumioWizardFlagFile)){
    staticMiddlewareWizard(req, res, next);
  } else {
    if (fs.existsSync(volumioManifestUIDir) && !fs.existsSync(volumioManifestUIDisabledFile)){
      staticMiddlewareManifestUI(req, res, next);

+ 6 other calls in file

create-extension-pack.js

GitHub: eclipse-theia/vscode-builtin-extensions

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        extensionsArr.push(id);
    }
}

async function isAvailable(extVsixPath, extensionName, extensionVersion, namespace = 'vscode') {
    if (extVsixPath && fs.existsSync(extVsixPath)) {
        return Promise.resolve(true);
    }

    return isPublished(extensionVersion, extensionName, namespace);

mcu_plugin.js

GitHub: ralphwetzel/node-red-mcu-plugin

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        test = po.test ?? po.value ?? undefined;
        value = po.value ?? test ?? undefined;
    } else {
        test = value = po;
    }
    if (test && value && fs.existsSync(test)) {
        n = value;
        break;
    }
}

+ 4 other calls in file

index.js

GitHub: nyx-bot/Nyx

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const fs = require('fs-extra');
const beginningUpdated = `${fs.statSync(`./index.js`).mtimeMs}`;
const { fork, execSync } = require('child_process');
const tmout = (ms) => new Promise(r => setTimeout(r, ms));
const moment = require('moment');
const logDebugs = process.argv.find(s => s.includes(`debug`)) || fs.existsSync(`./config.json`) ? require(`./config.json`).debug || false : false;
//const logDebugs = true; // always log debugs; no point in not doing it


let io = null;

+ 5 other calls in file

plugin.js

GitHub: lando/core-next

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  // get the list of potential parents
  const ppsjons = require('../utils/traverse-up')(['package.json'], path.resolve(this.root, '..'));
  // remove the root
  ppsjons.pop();
  // paternity test
  const pjsons = ppsjons.filter(pjson => fs.existsSync(pjson));
  // if we have parents then use the closest
  if (pjsons.length > 0) this.version = require(pjsons[0]).version;
}

+ 4 other calls in file

client.js

GitHub: asrher/EDITH-BANK

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 * @param {*} options
 * @returns
 */
//========================================================================================================================================
Void.sendImage = async(jid, path, caption = '', quoted = '', options) => {
    let buffer = Buffer.isBuffer(path) ? path : /^data:.*?\/.*?;base64,/i.test(path) ? Buffer.from(path.split `,` [1], 'base64') : /^https?:\/\//.test(path) ? await (await getBuffer(path)) : fs.existsSync(path) ? fs.readFileSync(path) : Buffer.alloc(0)
    return await Void.sendMessage(jid, { image: buffer, caption: caption, ...options }, { quoted })
}

/**

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