Typescript Content Delivery SDK for Contentstack
Contentstack is a headless CMS with an API-first approach. It is a CMS that developers can use to build powerful cross-platform applications in their favorite languages. Build your application frontend, and Contentstack will take care of the rest. Read More.
Contentstack provides Typescript SDK to build application on top of Typescript. Given below is the detailed guide and helpful resources to get started with our Typescript SDK.
The Typescript SDK can also be used to create Node.js and React native applications.
Prerequisite
You need Node.js version 18 or later installed to use the Contentstack TypeScript SDK.
Setup and Installation
Node.js uses the Typescript SDK to create apps. To use the Typescript SDK, install it via npm:
npm i @contentstack/delivery-sdk
To import the SDK in your project, use the following command:
import contentstack from '@contentstack/delivery-sdk'
To initialize the SDK, you will need to specify the API Key, Delivery Token, and Environment Name of your stack.
import contentstack from '@contentstack/delivery-sdk'
const stack = contentstack.stack({ apiKey: "apiKey", deliveryToken: "deliveryToken", environment: "environment" });
Key Concepts for using Contentstack
Stack
A stack is like a container that holds the content of your app. Learn more about Stacks.
Content Type
Content type lets you define the structure or blueprint of a page or a section of your digital property. It is a form-like page that gives Content Managers an interface to input and upload content. Read more.
Entry
An entry is the actual piece of content created using one of the defined content types. Learn more about Entries.
Asset
Assets refer to all the media files (images, videos, PDFs, audio files, and so on) uploaded to Contentstack. These files can be used in multiple entries. Read more about Assets.
Environment
A publishing environment corresponds to one or more deployment servers or a content delivery destination where the entries need to be published. Learn how to work with Environments.
Contentstack Typescript SDK
Initializing your SDK
You will need to specify the API key, Delivery Token, and Environment Name of your stack to initialize the SDK:
const stack = contentstack.stack({ apiKey: "apiKey", deliveryToken: "deliveryToken", environment: "environment" });
Once you have initialized the SDK, you can start getting content in your app.
Region and Host Configuration
The SDK supports region and custom host configuration to connect to different Contentstack data centers or custom endpoints.
Region Support
You can specify a region to connect to the appropriate Contentstack data center. Available regions are:
US(default) - Usescdn.contentstack.ioEU- Useseu-cdn.contentstack.comAU- Usesau-cdn.contentstack.comAZURE_NA- Usesazure-na-cdn.contentstack.comAZURE_EU- Usesazure-eu-cdn.contentstack.comGCP_NA- Usesgcp-na-cdn.contentstack.comGCP_EU- Usesgcp-eu-cdn.contentstack.com
import contentstack, { Region } from '@contentstack/delivery-sdk'
// Using region enum
const stack = contentstack.stack({
apiKey: "apiKey",
deliveryToken: "deliveryToken",
environment: "environment",
region: Region.EU
});
// Using region string
const stack = contentstack.stack({
apiKey: "apiKey",
deliveryToken: "deliveryToken",
environment: "environment",
region: "eu"
});
Custom Host Support
You can specify a custom host to connect to a custom endpoint. If a custom host is provided, it takes priority over the region-based host.
const stack = contentstack.stack({
apiKey: "apiKey",
deliveryToken: "deliveryToken",
environment: "environment",
host: "custom-cdn.example.com"
});
// Custom host with region (host takes priority)
const stack = contentstack.stack({
apiKey: "apiKey",
deliveryToken: "deliveryToken",
environment: "environment",
region: Region.EU,
host: "custom-cdn.example.com"
});
Querying content from your stack
To get a single entry, you need to specify the content type as well as the ID of the entry.
import { BaseEntry } from '@contentstack/delivery-sdk'
interface BlogPostEntry extends BaseEntry {
// custom entry types
}
const result = await stack
.contentType(contentType_uid)
.entry(entry_uid)
.fetch<BlogPostEntry>();
To retrieve multiple entries of a content type, you need to specify the content type uid. You can also specify search parameters to filter results.
import { BaseEntry, FindEntry } from '@contentstack/delivery-sdk'
interface BlogPostEntry extends BaseEntry {
// custom entry types
}
const result = await stack.contentType("contentType1Uid").entry()
.query()
.find<BlogPostEntry>()
Advanced Queries
You can query for content types, entries, assets and more using our Typescript API Reference.
Working with Images
We have introduced Image Delivery APIs that let you retrieve images and then manipulate and optimize them for your digital properties. It lets you perform a host of other actions such as crop, trim, resize, rotate, overlay, and so on.
For example, if you want to crop an image (with width as 300 and height as 400), you simply need to append query parameters at the end of the image URL, such as, https://images.contentstack.io/owl.jpg?crop=300,400. There are several more parameters that you can use for your images.
Read Image Delivery API documentation.
Following are Image Delivery API examples.
const url = 'www.example.com';
const transformObj = new imageTransform().bgColor('cccccc');
const transformURL = url.transform(transformObj);
Pagination
If the result of the initial sync (or subsequent sync) contains more than 100 records, the response would be paginated. It provides pagination token in the response. You will need to use this token to get the next batch of data.
const query = stack.contentType("contentTypeUid").entry().query();
const pagedResult = await query
.paginate()
.find<BlogPostEntry>();
// OR
const pagedResult = await query
.paginate({ skip: 20, limit: 20 })
.find<BlogPostEntry>();
Caching
To use cache policies (CACHE_THEN_NETWORK, CACHE_ELSE_NETWORK, NETWORK_ELSE_CACHE), you must provide a persistence store via cacheOptions.persistenceStore. Install the optional persistence plugin and pass a PersistenceStore instance:
npm install @contentstack/persistence-plugin
import contentstack, { Policy } from '@contentstack/delivery-sdk';
import { PersistenceStore } from '@contentstack/persistence-plugin';
const stack = contentstack.stack({
apiKey: 'your-api-key',
deliveryToken: 'your-delivery-token',
environment: 'your-environment',
cacheOptions: {
policy: Policy.CACHE_THEN_NETWORK,
persistenceStore: new PersistenceStore({ storeType: 'localStorage', maxAge: 86400000 }),
},
});
See @contentstack/persistence-plugin for options (storeType, maxAge, custom storage).
Development
When contributing or running tests from the repository, run npm run build before running tests. The published package includes a pre-built dist/ directory.
Helpful Links
The MIT License (MIT)
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