How to use the pug.compileFileClient function in pug

/// pug.compileClient(source, ?options) https://pugjs.org/api/reference.html#pugcompileclientsource-options
        clientFunctionString = pug.compileClient(path);
        str = pug.compileClient(path);
    }

    {
        /// pug.compileClientWithDependenciesTracked(source, ?options) https://pugjs.org/api/reference.html#pugcompileclientwithdependenciestrackedsource-options
        let obj = pug.compileClientWithDependenciesTracked(source);
        clientFunctionString = obj.body;
        str = obj.body;
        let strArray: string[] = obj.dependencies;
    }

    {
        /// pug.compileFileClient(path, ?options) https://pugjs.org/api/reference.html#pugcompilefileclientpath-options
        clientFunctionString = pug.compileFileClient(path);
        str = pug.compileFileClient(path);
    }

    {
        /// pug.render(source, ?options, ?callback) https://pugjs.org/api/reference.html#pugrendersource-options-callback
        str = pug.render(source);

        // test type for callback paraments
        pug.render(source, {}, (err, html) => {
            let e: Error = err;
            str = html;
        });
    }

    {
        /// pug.renderFile(path, ?options, ?callback) https://pugjs.org/api/reference.html#pugrenderfilepath-options-callback

clientFunctionString = pug.compileClient(path);
        str = pug.compileClient(path);
    }

    {
        /// pug.compileClientWithDependenciesTracked(source, ?options) https://pugjs.org/api/reference.html#pugcompileclientwithdependenciestrackedsource-options
        let obj = pug.compileClientWithDependenciesTracked(source);
        clientFunctionString = obj.body;
        str = obj.body;
        let strArray: string[] = obj.dependencies;
    }

    {
        /// pug.compileFileClient(path, ?options) https://pugjs.org/api/reference.html#pugcompilefileclientpath-options
        clientFunctionString = pug.compileFileClient(path);
        str = pug.compileFileClient(path);
    }

    {
        /// pug.render(source, ?options, ?callback) https://pugjs.org/api/reference.html#pugrendersource-options-callback
        str = pug.render(source);

        // test type for callback paraments
        pug.render(source, {}, (err, html) => {
            let e: Error = err;
            str = html;
        });
    }

    {
        /// pug.renderFile(path, ?options, ?callback) https://pugjs.org/api/reference.html#pugrenderfilepath-options-callback
        str = pug.renderFile(path);

function renderFile(path, rootPath) {
  var isPug = /\.(?:pug|jade)$/;
  var isIgnored = /([\/\\]_)|(^_)/;

  var stat = fs.lstatSync(path);
  // Found pug file
  if (stat.isFile() && isPug.test(path) && !isIgnored.test(path)) {
    // Try to watch the file if needed. watchFile takes care of duplicates.
    if (program.watch) watchFile(path, null, rootPath);
    if (program.nameAfterFile) {
      options.name = getNameFromFileName(path);
    }
    var fn = options.client
           ? pug.compileFileClient(path, options)
           : pug.compileFile(path, options);
    if (program.watch && fn.dependencies) {
      // watch dependencies, and recompile the base
      fn.dependencies.forEach(function (dep) {
        watchFile(dep, path, rootPath);
      });
    }

    // --extension
    var extname;
    if (program.extension)   extname = '.' + program.extension;
    else if (options.client) extname = '.js';
    else if (program.extension === '') extname = '';
    else                     extname = '.html';

    // path: foo.pug -> foo.

// Copyright (c) 2018 Chandan B N. All rights reserved.

var fs = require('fs');
var pug = require('pug');
const conf = require ('../config/conf');
var optSet = require('../models/set');
var cfc = pug.compileFileClient('views/subcontent.pug', {
    basedir: 'views',
    name: 'subdocRender',
    compileDebug: false,
    inlineRuntimeFunctions: true
});
fs.writeFileSync('public/js/subcontent.js', cfc);

for (section of conf.sections) {
    console.log('rendering ' + section);
    //var s = conf.sections[section];
    var opts = optSet(section);
    if (!opts.conf.readonly) {
        if (opts.render == 'render') {
            opts.render = '../views/render';
        }
        var pugRender = pug.compileFileClient(__dirname + '/' + opts.render + '.pug', {

cveProps.CVE_data_meta.properties.STATE.enum = 
 cveProps.CVE_data_meta.properties.STATE.enum.filter(x => !['DRAFT','REVIEW', 'READY'].includes(x));

fs.writeFileSync("standalone/index.html", cveEdit({
    title: 'Vulnogram CVE Editor',
    idpath: 'CVE_data_meta.ID',
    min: true,
    doc: null,
    conf: conf,
    confOpts: confOpts,
    opts: confOpts.cve,
    schemaName: 'cve',
    allowAjax: false,
}));

var pugRender = pug.compileFileClient(renderTemplate, {
        basedir: 'views',
        name: 'pugRender',
        compileDebug: false,
        inlineRuntimeFunctions: true,
});

for (jsDir of ['standalone', 'standalone/js', 'standalone/js/cve']) {
    if (!fs.existsSync(jsDir)) {
        fs.mkdirSync(jsDir); 
    }
}

fs.writeFileSync("standalone/js/cve/render.js", pugRender);

basedir: 'views',
    name: 'subdocRender',
    compileDebug: false,
    inlineRuntimeFunctions: true
});
fs.writeFileSync('public/js/subcontent.js', cfc);

for (section of conf.sections) {
    console.log('rendering ' + section);
    //var s = conf.sections[section];
    var opts = optSet(section);
    if (!opts.conf.readonly) {
        if (opts.render == 'render') {
            opts.render = '../views/render';
        }
        var pugRender = pug.compileFileClient(__dirname + '/' + opts.render + '.pug', {
            basedir: 'views',
            name: 'pugRender',
            compileDebug: false,
            inlineRuntimeFunctions: true
        });
        var jsDir = 'public/js/' + section;
        if (!fs.existsSync(jsDir)) {
            fs.mkdirSync(jsDir);
        }
        fs.writeFileSync('public/js/' + section + '/render.js', pugRender);
    }
}

views.forEach((view) => {
	if (path.extname(view) === ".pug") {
		outputStr += pug.compileFileClient(path.join(config.Dashboard.views, view), {name: path.basename(view, ".pug")});
	}
});