Azure Core JavaScript SDK Documentation

What is Azure Core?

Azure Core provides shared primitives, helpers, and client‑side utilities used by all Azure SDK packages for JavaScript/TypeScript. It offers consistent authentication, request pipelines, and error handling across services.

Key Features

Unified Pipeline for HTTP request/response handling
Pluggable Policy architecture
Telemetry and tracing support
Credential abstractions (Azure Identity)
Retry, logging, and throttling strategies

Installation

Install the core package via npm or yarn.

npm install @azure/core-rest-pipeline

For TypeScript projects, the types are included.

Basic Usage

Create a pipeline and send a request.

import { createPipeline, sendRequest } from "@azure/core-rest-pipeline";
import { bearerTokenAuthenticationPolicy } from "@azure/core-auth";
import { DefaultAzureCredential } from "@azure/identity";

const credential = new DefaultAzureCredential();
const pipeline = createPipeline(
  credential,
  {
    retryOptions: { maxRetries: 3 },
    logger: console
  }
);

const request = {
  url: "https://management.azure.com/subscriptions?api-version=2020-01-01",
  method: "GET",
  headers: {}
};

await sendRequest(pipeline, request);

API Reference

Function / Class	Description
`createPipeline(credential, options)`	Creates an HTTP pipeline with default policies.
`sendRequest(pipeline, request)`	Executes a request through the provided pipeline.
`Pipeline`	Interface representing the request/response pipeline.
`HttpHeaders`	Utility to manage HTTP header collections.
`RetryPolicyOptions`	Configuration for retry behavior.
`LoggingPolicy`	Policy that logs request and response details.

Samples

Explore common scenarios.