framework

Axios HTTP layer for the SDK — contentstackHTTPClient, retries, concurrency, plugins, oauth utilities.

Framework – HTTP / config / transport – Contentstack Management JavaScript SDK

When to use

Changing lib/core/ request behavior: retries, base URL, interceptors, concurrency, OAuth helpers.
Debugging HTTP-level issues (429, timeouts, headers).

Instructions

The SDK isolates HTTP and cross-cutting behavior under lib/core/. Use this when changing requests, retries, auth headers, or queueing — not when only adjusting a single stack resource’s URL path.

Key modules

File	Responsibility
`contentstackHTTPClient.js`	Builds axios instance: baseURL, paramsSerializer (qs + JSON `query`), interceptors, retry behavior, ConcurrencyQueue, logHandler, retryCondition (e.g. 429)
`concurrency-queue.js`	Limits parallel in-flight requests (`maxRequests`)
`contentstackError.js`	Maps axios errors to enriched `Error` objects (redacts tokens in logged config)
`errorMessages.js`	User-facing error string helpers
`oauthHandler.js`	OAuth-related behavior used by `contentstackClient`
`pkceStorage.js`	PKCE storage for OAuth flows
`Util.js`	Host checks, user agent, plugin normalization

When to change this layer

New global header, auth scheme, or base URL rule → HTTP client / lib/contentstack.js bootstrap.
Retry policy, 429, timeout defaults → contentstackHTTPClient.js (and JSDoc on client() options).
Concurrency → concurrency-queue.js + options from client().

Tests

test/unit/ContentstackHTTPClient-test.js, concurrency-Queue-test.js, contentstackError-test.js, Util-test — extend when behavior changes.