How to use the cordova-common.FileUpdater.mergeAndUpdateDir function in cordova-common

function cleanWww (projectRoot, locations) {
    var targetDir = path.relative(projectRoot, locations.www);
    events.emit('verbose', 'Cleaning ' + targetDir);

    // No source paths are specified, so mergeAndUpdateDir() will clear the target directory.
    FileUpdater.mergeAndUpdateDir(
        [], targetDir, { rootDir: projectRoot, all: true }, logFileOp);
}

var sourceDirs = [
        path.relative(cordovaProject.root, cordovaProject.locations.www),
        path.relative(cordovaProject.root, destinations.platformWww)
    ];

    // If project contains 'merges' for our platform, use them as another overrides
    var merges_path = path.join(cordovaProject.root, 'merges', 'android');
    if (fs.existsSync(merges_path)) {
        events.emit('verbose', 'Found "merges/android" folder. Copying its contents into the android project.');
        sourceDirs.push(path.join('merges', 'android'));
    }

    var targetDir = path.relative(cordovaProject.root, destinations.www);
    events.emit(
        'verbose', 'Merging and updating files from [' + sourceDirs.join(', ') + '] to ' + targetDir);
    FileUpdater.mergeAndUpdateDir(
        sourceDirs, targetDir, { rootDir: cordovaProject.root }, logFileOp);
}

function cleanWww(projectRoot, locations) {
    var targetDir = path.relative(projectRoot, locations.www);
    events.emit('verbose', 'Cleaning ' + targetDir);

    // No source paths are specified, so mergeAndUpdateDir() will clear the target directory.
    FileUpdater.mergeAndUpdateDir(
        [], targetDir, { rootDir: projectRoot, all: true }, logFileOp);
}

var sourceDirs = [
        path.relative(cordovaProject.root, cordovaProject.locations.www),
        path.relative(cordovaProject.root, destinations.platformWww)
    ];

    // If project contains 'merges' for our platform, use them as another overrides
    var merges_path = path.join(cordovaProject.root, 'merges', 'windows');
    if (fs.existsSync(merges_path)) {
        events.emit('verbose', 'Found "merges/windows" folder. Copying its contents into the windows project.');
        sourceDirs.push(path.join('merges', 'windows'));
    }

    var targetDir = path.relative(cordovaProject.root, destinations.www);
    events.emit(
        'verbose', 'Merging and updating files from [' + sourceDirs.join(', ') + '] to ' + targetDir);
    FileUpdater.mergeAndUpdateDir(
        sourceDirs, targetDir, { rootDir: cordovaProject.root }, logFileOp);
}

function cleanWww(projectRoot, locations) {
    var targetDir = path.relative(projectRoot, locations.www);
    events.emit('verbose', 'Cleaning ' + targetDir);

    // No source paths are specified, so mergeAndUpdateDir() will clear the target directory.
    FileUpdater.mergeAndUpdateDir(
        [], targetDir, { rootDir: projectRoot, all: true }, logFileOp);
}

function cleanWww (projectRoot, locations) {
    var targetDir = path.relative(projectRoot, locations.www);
    events.emit('verbose', 'Cleaning ' + targetDir);

    // No source paths are specified, so mergeAndUpdateDir() will clear the target directory.
    FileUpdater.mergeAndUpdateDir(
        [], targetDir, { rootDir: projectRoot, all: true }, logFileOp);
}

function cleanWww (projectRoot, locations) {
    var targetDir = path.relative(projectRoot, locations.www);
    events.emit('verbose', 'Cleaning ' + targetDir);

    // No source paths are specified, so mergeAndUpdateDir() will clear the target directory.
    FileUpdater.mergeAndUpdateDir(
        [], targetDir, { rootDir: projectRoot, all: true }, logFileOp);
}

var sourceDirs = [
        path.relative(cordovaProject.root, cordovaProject.locations.www),
        path.relative(cordovaProject.root, destinations.platformWww)
    ];

    // If project contains 'merges' for our platform, use them as another overrides
    var merges_path = path.join(cordovaProject.root, 'merges', 'android');
    if (fs.existsSync(merges_path)) {
        events.emit('verbose', 'Found "merges/android" folder. Copying its contents into the android project.');
        sourceDirs.push(path.join('merges', 'android'));
    }

    var targetDir = path.relative(cordovaProject.root, destinations.www);
    events.emit(
        'verbose', 'Merging and updating files from [' + sourceDirs.join(', ') + '] to ' + targetDir);
    FileUpdater.mergeAndUpdateDir(
        sourceDirs, targetDir, { rootDir: cordovaProject.root }, logFileOp);
}

function cleanWww (projectRoot, locations) {
    const targetDir = path.relative(projectRoot, locations.www);
    events.emit('verbose', 'Cleaning ' + targetDir);

    // No source paths are specified, so mergeAndUpdateDir() will clear the target directory.
    FileUpdater.mergeAndUpdateDir(
        [], targetDir, { rootDir: projectRoot, all: true }, logFileOp);
}