overleaf/services/web/config/settings.defaults.js

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const Path = require('path')
const { merge } = require('@overleaf/settings/merge')
let defaultFeatures, siteUrl
// Make time interval config easier.
const seconds = 1000
const minutes = 60 * seconds
// These credentials are used for authenticating api requests
// between services that may need to go over public channels
const httpAuthUser = process.env.WEB_API_USER
const httpAuthPass = process.env.WEB_API_PASSWORD
const httpAuthUsers = {}
if (httpAuthUser && httpAuthPass) {
httpAuthUsers[httpAuthUser] = httpAuthPass
}
const sessionSecret = process.env.SESSION_SECRET || 'secret-please-change'
const intFromEnv = function (name, defaultValue) {
if (
[null, undefined].includes(defaultValue) ||
typeof defaultValue !== 'number'
) {
throw new Error(
`Bad default integer value for setting: ${name}, ${defaultValue}`
)
}
return parseInt(process.env[name], 10) || defaultValue
}
const defaultTextExtensions = [
'tex',
'latex',
'sty',
'cls',
'bst',
'bib',
'bibtex',
'txt',
'tikz',
'mtx',
'rtex',
'md',
'asy',
'latexmkrc',
'lbx',
'bbx',
'cbx',
'm',
'lco',
'dtx',
'ins',
'ist',
'def',
'clo',
'ldf',
'rmd',
'lua',
'gv',
'mf',
'yml',
'yaml',
]
const parseTextExtensions = function (extensions) {
if (extensions) {
return extensions.split(',').map(ext => ext.trim())
} else {
return []
}
}
module.exports = {
env: 'server-ce',
limits: {
httpGlobalAgentMaxSockets: 300,
httpsGlobalAgentMaxSockets: 300,
},
allowAnonymousReadAndWriteSharing:
process.env.SHARELATEX_ALLOW_ANONYMOUS_READ_AND_WRITE_SHARING === 'true',
// Databases
// ---------
mongo: {
options: {
appname: 'web',
useUnifiedTopology:
(process.env.MONGO_USE_UNIFIED_TOPOLOGY || 'true') === 'true',
poolSize: parseInt(process.env.MONGO_POOL_SIZE, 10) || 10,
serverSelectionTimeoutMS:
parseInt(process.env.MONGO_SERVER_SELECTION_TIMEOUT, 10) || 60000,
socketTimeoutMS: parseInt(process.env.MONGO_SOCKET_TIMEOUT, 10) || 30000,
},
url:
process.env.MONGO_CONNECTION_STRING ||
process.env.MONGO_URL ||
`mongodb://${process.env.MONGO_HOST || '127.0.0.1'}/sharelatex`,
},
redis: {
web: {
host: process.env.REDIS_HOST || 'localhost',
port: process.env.REDIS_PORT || '6379',
password: process.env.REDIS_PASSWORD || '',
db: process.env.REDIS_DB,
maxRetriesPerRequest: parseInt(
process.env.REDIS_MAX_RETRIES_PER_REQUEST || '20'
),
},
// websessions:
// cluster: [
// {host: 'localhost', port: 7000}
// {host: 'localhost', port: 7001}
// {host: 'localhost', port: 7002}
// {host: 'localhost', port: 7003}
// {host: 'localhost', port: 7004}
// {host: 'localhost', port: 7005}
// ]
// ratelimiter:
// cluster: [
// {host: 'localhost', port: 7000}
// {host: 'localhost', port: 7001}
// {host: 'localhost', port: 7002}
// {host: 'localhost', port: 7003}
// {host: 'localhost', port: 7004}
// {host: 'localhost', port: 7005}
// ]
// cooldown:
// cluster: [
// {host: 'localhost', port: 7000}
// {host: 'localhost', port: 7001}
// {host: 'localhost', port: 7002}
// {host: 'localhost', port: 7003}
// {host: 'localhost', port: 7004}
// {host: 'localhost', port: 7005}
// ]
api: {
host: process.env.REDIS_HOST || 'localhost',
port: process.env.REDIS_PORT || '6379',
password: process.env.REDIS_PASSWORD || '',
maxRetriesPerRequest: parseInt(
process.env.REDIS_MAX_RETRIES_PER_REQUEST || '20'
),
},
},
// Service locations
// -----------------
// Configure which ports to run each service on. Generally you
// can leave these as they are unless you have some other services
// running which conflict, or want to run the web process on port 80.
internal: {
web: {
port: process.env.WEB_PORT || 3000,
host: process.env.LISTEN_ADDRESS || 'localhost',
},
},
// Tell each service where to find the other services. If everything
// is running locally then this is easy, but they exist as separate config
// options incase you want to run some services on remote hosts.
apis: {
web: {
url: `http://${
process.env.WEB_API_HOST || process.env.WEB_HOST || 'localhost'
}:${process.env.WEB_API_PORT || process.env.WEB_PORT || 3000}`,
user: httpAuthUser,
pass: httpAuthPass,
},
documentupdater: {
url: `http://${
process.env.DOCUPDATER_HOST ||
process.env.DOCUMENT_UPDATER_HOST ||
'localhost'
}:3003`,
},
spelling: {
url: `http://${process.env.SPELLING_HOST || 'localhost'}:3005`,
host: process.env.SPELLING_HOST,
},
trackchanges: {
url: `http://${process.env.TRACK_CHANGES_HOST || 'localhost'}:3015`,
},
docstore: {
url: `http://${process.env.DOCSTORE_HOST || 'localhost'}:3016`,
pubUrl: `http://${process.env.DOCSTORE_HOST || 'localhost'}:3016`,
},
chat: {
internal_url: `http://${process.env.CHAT_HOST || 'localhost'}:3010`,
},
filestore: {
url: `http://${process.env.FILESTORE_HOST || 'localhost'}:3009`,
},
clsi: {
url: `http://${process.env.CLSI_HOST || 'localhost'}:3013`,
// url: "http://#{process.env['CLSI_LB_HOST']}:3014"
backendGroupName: undefined,
defaultBackendClass: process.env.CLSI_DEFAULT_BACKEND_CLASS || 'e2',
},
realTime: {
url: `http://${process.env.REALTIME_HOST || 'localhost'}:3026`,
},
contacts: {
url: `http://${process.env.CONTACTS_HOST || 'localhost'}:3036`,
},
notifications: {
url: `http://${process.env.NOTIFICATIONS_HOST || 'localhost'}:3042`,
},
webpack: {
url: `http://${process.env.WEBPACK_HOST || 'localhost'}:3808`,
},
haveIBeenPwned: {
enabled: process.env.HAVE_I_BEEN_PWNED_ENABLED === 'true',
url:
process.env.HAVE_I_BEEN_PWNED_URL || 'https://api.pwnedpasswords.com',
timeout: parseInt(process.env.HAVE_I_BEEN_PWNED_TIMEOUT, 10) || 5 * 1000,
},
// For legacy reasons, we need to populate the below objects.
v1: {},
recurly: {},
},
splitTests: [],
// Where your instance of ShareLaTeX can be found publically. Used in emails
// that are sent out, generated links, etc.
siteUrl: (siteUrl = process.env.PUBLIC_URL || 'http://localhost:3000'),
lockManager: {
lockTestInterval: intFromEnv('LOCK_MANAGER_LOCK_TEST_INTERVAL', 50),
maxTestInterval: intFromEnv('LOCK_MANAGER_MAX_TEST_INTERVAL', 1000),
maxLockWaitTime: intFromEnv('LOCK_MANAGER_MAX_LOCK_WAIT_TIME', 10000),
redisLockExpiry: intFromEnv('LOCK_MANAGER_REDIS_LOCK_EXPIRY', 30),
slowExecutionThreshold: intFromEnv(
'LOCK_MANAGER_SLOW_EXECUTION_THRESHOLD',
5000
),
},
// Optional separate location for websocket connections, if unset defaults to siteUrl.
wsUrl: process.env.WEBSOCKET_URL,
wsUrlV2: process.env.WEBSOCKET_URL_V2,
wsUrlBeta: process.env.WEBSOCKET_URL_BETA,
wsUrlV2Percentage: parseInt(
process.env.WEBSOCKET_URL_V2_PERCENTAGE || '0',
10
),
wsRetryHandshake: parseInt(process.env.WEBSOCKET_RETRY_HANDSHAKE || '5', 10),
// cookie domain
// use full domain for cookies to only be accessible from that domain,
// replace subdomain with dot to have them accessible on all subdomains
cookieDomain: process.env.COOKIE_DOMAIN,
cookieName: process.env.COOKIE_NAME || 'sharelatex.sid',
cookieRollingSession: true,
// this is only used if cookies are used for clsi backend
// clsiCookieKey: "clsiserver"
robotsNoindex: process.env.ROBOTS_NOINDEX === 'true' || false,
maxEntitiesPerProject: 2000,
maxUploadSize: 50 * 1024 * 1024, // 50 MB
multerOptions: {
preservePath: process.env.MULTER_PRESERVE_PATH,
},
// start failing the health check if active handles exceeds this limit
maxActiveHandles: process.env.MAX_ACTIVE_HANDLES
? parseInt(process.env.MAX_ACTIVE_HANDLES, 10)
: undefined,
// Security
// --------
security: {
sessionSecret,
bcryptRounds: parseInt(process.env.BCRYPT_ROUNDS, 10) || 12,
}, // number of rounds used to hash user passwords (raised to power 2)
adminUrl: process.env.ADMIN_URL,
adminOnlyLogin: process.env.ADMIN_ONLY_LOGIN === 'true',
adminPrivilegeAvailable: process.env.ADMIN_PRIVILEGE_AVAILABLE === 'true',
blockCrossOriginRequests: process.env.BLOCK_CROSS_ORIGIN_REQUESTS === 'true',
allowedOrigins: (process.env.ALLOWED_ORIGINS || siteUrl).split(','),
httpAuthUsers,
// Default features
// ----------------
//
// You can select the features that are enabled by default for new
// new users.
defaultFeatures: (defaultFeatures = {
collaborators: -1,
dropbox: true,
github: true,
gitBridge: true,
versioning: true,
compileTimeout: 180,
compileGroup: 'standard',
references: true,
templates: true,
trackChanges: true,
}),
// featuresEpoch: 'YYYY-MM-DD',
features: {
personal: defaultFeatures,
},
groupPlanModalOptions: {
plan_codes: [],
currencies: [],
sizes: [],
usages: [],
},
plans: [
{
planCode: 'personal',
name: 'Personal',
price_in_cents: 0,
features: defaultFeatures,
},
],
enableSubscriptions: false,
enabledLinkedFileTypes: (process.env.ENABLED_LINKED_FILE_TYPES || '').split(
','
),
// i18n
// ------
//
i18n: {
checkForHTMLInVars: process.env.I18N_CHECK_FOR_HTML_IN_VARS === 'true',
escapeHTMLInVars: process.env.I18N_ESCAPE_HTML_IN_VARS === 'true',
subdomainLang: {
www: { lngCode: 'en', url: siteUrl },
},
defaultLng: 'en',
},
// Spelling languages
// ------------------
//
// You must have the corresponding aspell package installed to
// be able to use a language.
languages: [
{ code: 'en', name: 'English' },
{ code: 'en_US', name: 'English (American)' },
{ code: 'en_GB', name: 'English (British)' },
{ code: 'en_CA', name: 'English (Canadian)' },
{ code: 'af', name: 'Afrikaans' },
{ code: 'ar', name: 'Arabic' },
{ code: 'gl', name: 'Galician' },
{ code: 'eu', name: 'Basque' },
{ code: 'br', name: 'Breton' },
{ code: 'bg', name: 'Bulgarian' },
{ code: 'ca', name: 'Catalan' },
{ code: 'hr', name: 'Croatian' },
{ code: 'cs', name: 'Czech' },
{ code: 'da', name: 'Danish' },
{ code: 'nl', name: 'Dutch' },
{ code: 'eo', name: 'Esperanto' },
{ code: 'et', name: 'Estonian' },
{ code: 'fo', name: 'Faroese' },
{ code: 'fr', name: 'French' },
{ code: 'de', name: 'German' },
{ code: 'el', name: 'Greek' },
{ code: 'id', name: 'Indonesian' },
{ code: 'ga', name: 'Irish' },
{ code: 'it', name: 'Italian' },
{ code: 'kk', name: 'Kazakh' },
{ code: 'ku', name: 'Kurdish' },
{ code: 'lv', name: 'Latvian' },
{ code: 'lt', name: 'Lithuanian' },
{ code: 'nr', name: 'Ndebele' },
{ code: 'ns', name: 'Northern Sotho' },
{ code: 'no', name: 'Norwegian' },
{ code: 'fa', name: 'Persian' },
{ code: 'pl', name: 'Polish' },
{ code: 'pt_BR', name: 'Portuguese (Brazilian)' },
{ code: 'pt_PT', name: 'Portuguese (European)' },
{ code: 'pa', name: 'Punjabi' },
{ code: 'ro', name: 'Romanian' },
{ code: 'ru', name: 'Russian' },
{ code: 'sk', name: 'Slovak' },
{ code: 'sl', name: 'Slovenian' },
{ code: 'st', name: 'Southern Sotho' },
{ code: 'es', name: 'Spanish' },
{ code: 'sv', name: 'Swedish' },
{ code: 'tl', name: 'Tagalog' },
{ code: 'ts', name: 'Tsonga' },
{ code: 'tn', name: 'Tswana' },
{ code: 'hsb', name: 'Upper Sorbian' },
{ code: 'cy', name: 'Welsh' },
{ code: 'xh', name: 'Xhosa' },
],
translatedLanguages: {
cn: '简体中文',
cs: 'Čeština',
da: 'Dansk',
de: 'Deutsch',
en: 'English',
es: 'Español',
fi: 'Suomi',
fr: 'Français',
it: 'Italiano',
ja: '日本語',
ko: '한국어',
nl: 'Nederlands',
no: 'Norsk',
pl: 'Polski',
pt: 'Português',
ro: 'Română',
ru: 'Русский',
sv: 'Svenska',
tr: 'Türkçe',
uk: 'Українська',
'zh-CN': '简体中文',
},
maxDictionarySize: 1024 * 1024, // 1 MB
// Password Settings
// -----------
// These restrict the passwords users can use when registering
// opts are from http://antelle.github.io/passfield
passwordStrengthOptions: {
length: {
min: 6,
// Bcrypt does not support longer passwords than that.
max: 72,
},
},
elevateAccountSecurityAfterFailedLogin:
parseInt(process.env.ELEVATED_ACCOUNT_SECURITY_AFTER_FAILED_LOGIN_MS, 10) ||
24 * 60 * 60 * 1000,
deviceHistory: {
cookieName: process.env.DEVICE_HISTORY_COOKIE_NAME || 'deviceHistory',
entryExpiry:
parseInt(process.env.DEVICE_HISTORY_ENTRY_EXPIRY_MS, 10) ||
90 * 24 * 60 * 60 * 1000,
maxEntries: parseInt(process.env.DEVICE_HISTORY_MAX_ENTRIES, 10) || 10,
secret: process.env.DEVICE_HISTORY_SECRET,
},
// Email support
// -------------
//
// ShareLaTeX uses nodemailer (http://www.nodemailer.com/) to send transactional emails.
// To see the range of transport and options they support, see http://www.nodemailer.com/docs/transports
// email:
// fromAddress: ""
// replyTo: ""
// lifecycle: false
// # Example transport and parameter settings for Amazon SES
// transport: "SES"
// parameters:
// AWSAccessKeyID: ""
// AWSSecretKey: ""
// For legacy reasons, we need to populate this object.
sentry: {},
// Production Settings
// -------------------
debugPugTemplates: process.env.DEBUG_PUG_TEMPLATES === 'true',
precompilePugTemplatesAtBootTime: process.env
.PRECOMPILE_PUG_TEMPLATES_AT_BOOT_TIME
? process.env.PRECOMPILE_PUG_TEMPLATES_AT_BOOT_TIME === 'true'
: process.env.NODE_ENV === 'production',
// Should javascript assets be served minified or not.
useMinifiedJs: process.env.MINIFIED_JS === 'true' || false,
// Should static assets be sent with a header to tell the browser to cache
// them.
cacheStaticAssets: false,
// If you are running ShareLaTeX over https, set this to true to send the
// cookie with a secure flag (recommended).
secureCookie: false,
// 'SameSite' cookie setting. Can be set to 'lax', 'none' or 'strict'
// 'lax' is recommended, as 'strict' will prevent people linking to projects
// https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-4.1.2.7
sameSiteCookie: 'lax',
// If you are running ShareLaTeX behind a proxy (like Apache, Nginx, etc)
// then set this to true to allow it to correctly detect the forwarded IP
// address and http/https protocol information.
behindProxy: false,
// Delay before closing the http server upon receiving a SIGTERM process signal.
gracefulShutdownDelayInMs: parseInt(
process.env.GRACEFUL_SHUTDOWN_DELAY || 30 * seconds,
10
),
// Expose the hostname in the `X-Served-By` response header
exposeHostname: process.env.EXPOSE_HOSTNAME === 'true',
// Cookie max age (in milliseconds). Set to false for a browser session.
cookieSessionLength: 5 * 24 * 60 * 60 * 1000, // 5 days
// When true, only allow invites to be sent to email addresses that
// already have user accounts
restrictInvitesToExistingAccounts: false,
// Should we allow access to any page without logging in? This includes
// public projects, /learn, /templates, about pages, etc.
allowPublicAccess: process.env.SHARELATEX_ALLOW_PUBLIC_ACCESS === 'true',
// editor should be open by default
editorIsOpen: process.env.EDITOR_OPEN !== 'false',
// site should be open by default
siteIsOpen: process.env.SITE_OPEN !== 'false',
// Use a single compile directory for all users in a project
// (otherwise each user has their own directory)
// disablePerUserCompiles: true
// Domain the client (pdfjs) should download the compiled pdf from
pdfDownloadDomain: process.env.PDF_DOWNLOAD_DOMAIN, // "http://clsi-lb:3014"
// By default turn on feature flag, can be overridden per request.
enablePdfCaching: process.env.ENABLE_PDF_CACHING === 'true',
// Maximum size of text documents in the real-time editing system.
max_doc_length: 2 * 1024 * 1024, // 2mb
primary_email_check_expiration: 1000 * 60 * 60 * 24 * 90, // 90 days
// Maximum JSON size in HTTP requests
// We should be able to process twice the max doc length, to allow for
// - the doc content
// - text ranges spanning the whole doc
//
// There's also overhead required for the JSON encoding and the UTF-8 encoding,
// theoretically up to 3 times the max doc length. On the other hand, we don't
// want to block the event loop with JSON parsing, so we try to find a
// practical compromise.
max_json_request_size:
parseInt(process.env.MAX_JSON_REQUEST_SIZE) || 6 * 1024 * 1024, // 6 MB
// Internal configs
// ----------------
path: {
// If we ever need to write something to disk (e.g. incoming requests
// that need processing but may be too big for memory, then write
// them to disk here).
dumpFolder: Path.resolve(__dirname, '../data/dumpFolder'),
uploadFolder: Path.resolve(__dirname, '../data/uploads'),
},
// Automatic Snapshots
// -------------------
automaticSnapshots: {
// How long should we wait after the user last edited to
// take a snapshot?
waitTimeAfterLastEdit: 5 * minutes,
// Even if edits are still taking place, this is maximum
// time to wait before taking another snapshot.
maxTimeBetweenSnapshots: 30 * minutes,
},
// Smoke test
// ----------
// Provide log in credentials and a project to be able to run
// some basic smoke tests to check the core functionality.
//
smokeTest: {
user: process.env.SMOKE_TEST_USER,
userId: process.env.SMOKE_TEST_USER_ID,
password: process.env.SMOKE_TEST_PASSWORD,
projectId: process.env.SMOKE_TEST_PROJECT_ID,
rateLimitSubject: process.env.SMOKE_TEST_RATE_LIMIT_SUBJECT || '127.0.0.1',
stepTimeout: parseInt(process.env.SMOKE_TEST_STEP_TIMEOUT || '10000', 10),
},
appName: process.env.APP_NAME || 'Overleaf (Community Edition)',
adminEmail: process.env.ADMIN_EMAIL || 'placeholder@example.com',
adminDomains: process.env.ADMIN_DOMAINS
? JSON.parse(process.env.ADMIN_DOMAINS)
: undefined,
nav: {
title: process.env.APP_NAME || 'Overleaf Community Edition',
hide_powered_by: process.env.NAV_HIDE_POWERED_BY === 'true',
left_footer: [],
right_footer: [
{
text: "<i class='fa fa-github-square'></i> Fork on GitHub!",
url: 'https://github.com/overleaf/overleaf',
},
],
showSubscriptionLink: false,
header_extras: [],
},
// Example:
// header_extras: [{text: "Some Page", url: "http://example.com/some/page", class: "subdued"}]
recaptcha: {
endpoint:
process.env.RECAPTCHA_ENDPOINT ||
'https://www.google.com/recaptcha/api/siteverify',
disabled: {
invite: true,
login: true,
passwordReset: true,
register: true,
},
},
customisation: {},
redirects: {
'/templates/index': '/templates/',
},
reloadModuleViewsOnEachRequest: process.env.NODE_ENV === 'development',
rateLimit: {
autoCompile: {
everyone: process.env.RATE_LIMIT_AUTO_COMPILE_EVERYONE || 100,
standard: process.env.RATE_LIMIT_AUTO_COMPILE_STANDARD || 25,
},
},
analytics: {
enabled: false,
},
compileBodySizeLimitMb: process.env.COMPILE_BODY_SIZE_LIMIT_MB || 5,
textExtensions: defaultTextExtensions.concat(
parseTextExtensions(process.env.ADDITIONAL_TEXT_EXTENSIONS)
),
validRootDocExtensions: ['tex', 'Rtex', 'ltx'],
emailConfirmationDisabled:
process.env.EMAIL_CONFIRMATION_DISABLED === 'true' || false,
enabledServices: (process.env.ENABLED_SERVICES || 'web,api')
.split(',')
.map(s => s.trim()),
// module options
// ----------
modules: {
sanitize: {
options: {
allowedTags: [
'h1',
'h2',
'h3',
'h4',
'h5',
'h6',
'blockquote',
'p',
'a',
'ul',
'ol',
'nl',
'li',
'b',
'i',
'strong',
'em',
'strike',
'code',
'hr',
'br',
'div',
'table',
'thead',
'col',
'caption',
'tbody',
'tr',
'th',
'td',
'tfoot',
'pre',
'iframe',
'img',
'figure',
'figcaption',
'span',
'source',
'video',
'del',
],
allowedAttributes: {
a: [
'href',
'name',
'target',
'class',
'event-tracking',
'event-tracking-ga',
'event-tracking-label',
'event-tracking-trigger',
],
div: ['class', 'id', 'style'],
h1: ['class', 'id'],
h2: ['class', 'id'],
h3: ['class', 'id'],
h4: ['class', 'id'],
h5: ['class', 'id'],
h6: ['class', 'id'],
col: ['width'],
figure: ['class', 'id', 'style'],
figcaption: ['class', 'id', 'style'],
i: ['aria-hidden', 'aria-label', 'class', 'id'],
iframe: [
'allowfullscreen',
'frameborder',
'height',
'src',
'style',
'width',
],
img: ['alt', 'class', 'src', 'style'],
source: ['src', 'type'],
span: ['class', 'id', 'style'],
strong: ['style'],
table: ['border', 'class', 'id', 'style'],
td: ['colspan', 'rowspan', 'headers', 'style'],
th: [
'abbr',
'headers',
'colspan',
'rowspan',
'scope',
'sorted',
'style',
],
tr: ['class'],
video: ['alt', 'class', 'controls', 'height', 'width'],
},
},
},
},
overleafModuleImports: {
// modules to import (an empty array for each set of modules)
createFileModes: [],
gitBridge: [],
publishModal: [],
tprLinkedFileInfo: [],
tprLinkedFileRefreshError: [],
contactUsModal: [],
editorToolbarButtons: [],
sourceEditorExtensions: [],
sourceEditorComponents: [],
sourceEditorCompletionSources: [],
integrationLinkingWidgets: [],
referenceLinkingWidgets: [],
importProjectFromGithubModalWrapper: [],
editorLeftMenuSync: [],
},
moduleImportSequence: ['launchpad', 'server-ce-scripts', 'user-activate'],
csp: {
enabled: process.env.CSP_ENABLED === 'true',
reportOnly: process.env.CSP_REPORT_ONLY === 'true',
reportPercentage: parseFloat(process.env.CSP_REPORT_PERCENTAGE) || 0,
reportUri: process.env.CSP_REPORT_URI,
exclude: ['app/views/project/editor', 'app/views/project/list'],
},
unsupportedBrowsers: {
ie: '<=11',
},
// ID of the IEEE brand in the rails app
ieeeBrandId: intFromEnv('IEEE_BRAND_ID', 15),
}
module.exports.mergeWith = function (overrides) {
return merge(overrides, module.exports)
}