Helpers Available in JS Expression

Helper functions and libraries allowed in JS Expression

External Libraries

Library	Alias	Reference	Description
lodash	_ (underscore)	https://lodash.com/docs/4.17.15	A modern JavaScript utility library delivering modularity, performance & extras. Great for iterating arrays, objects, & strings; manipulating & testing values; creating composite functions.
btoa-lite	btoa	https://www.npmjs.com/package/btoa-lite	Encode base64 strings.
pluralize	pluralize	https://www.npmjs.com/package/pluralize	This module uses a pre-defined list of rules, applied in order, to singularize or pluralize a given word. There are many cases where this is useful, such as any automation based on user input.
jmespath	jmespath	https://www.npmjs.com/package/jmespath	jmespath.js is a javascript implementation of JMESPath, which is a query language for JSON. It will take a JSON document and transform it into another JSON document through a JMESPath expression.
jsonpath-plus	JSONPath	https://www.npmjs.com/package/jsonpath-plus	Analyse, transform, and selectively extract data from JSON documents (and JavaScript objects).
ejs	ejs	https://www.npmjs.com/package/ejs	Embedded JavaScript templates.
luxon	DateTime	https://www.npmjs.com/package/luxon	Luxon is a library for working with dates and times in JavaScript.
handlebars	processHandlebars	https://www.npmjs.com/package/handlebars	Handlebars.js is an extension to the Mustache templating language. Handlebars.js and Mustache are both logicless templating languages that keep the view and the code separated.
jose	jose	https://www.npmjs.com/package/jose	Jose is JavaScript module for JSON Object Signing and Encryption, providing support for JSON Web Tokens (JWT), JSON Web Signature (JWS), JSON Web Encryption (JWE), JSON Web Key (JWK), JSON Web Key Set (JWKS), and more.
commerceTools	commerceTools	Commercetools Helper	Helper library for commercetools authentication.
fluentCommerce	fluentCommerce	Fluent Commerce Helper	Helper library for fluentcommerce authentication.
salesforceCommerceCloud	salesforceCommerceCloud	Salesforce Helper	Helper library for Salesforce authentication.
elasticpath	elasticpath	Elastic Path Helper	Helper library for Elastic Path authentication.

Examples

Some external library functions return a Promise. For example, to get the returned payload from jose.jwtVerify, you first need to wait on the Promise and then get the payload from the response: jose.jwtVerify(xxx, yyy).then(response => response.payload).

List of methods in custom commerce helper libraries

commercetools Helper

generateToken

Generate access token for commercetools.

Params:

• region
• projectKey
• clientId
• clientSecret

Usage example:

commerceTools.generateToken('{region}', '{projectKey}', '{clientId}', secret('clientSecret')).then(token => 'Bearer ' + token)

Fluent Commerce Helper

generateToken

Generate access token for fluentcommerce.

Params:

• accountId
• retailerUsername
• password
• environment
• clientSecret

Salesforce Helper

generateOCAPIToken

Generate OpenCommerce API Token.

Params:

• clientId
• clientSecret

generateSLASToken

Generate token for Shopper Login (B2C).

Params:

• shortCode
• organizationId
• clientId
• clientSecret
• customerId: optional

generateOauthToken

Generate token for Connected Apps.

Params:

• clientId
• clientSecret
• username
• password

Elastic Path Helper

generateClientCredential

Generate client credentials for Elastic Path.

Params:

• authUrl
• clientId
• clientSecret

generateImplicitCredential

Generate implicit credentials for Elastic Path.

Params:

• authUrl
• clientId

Inbuilt methods and global objects

Function/Object	Reference
encodeURI	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURI
encodeURIComponent	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
JSON	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON
Array	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
Promise	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
Object	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object