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Practical mock API guides for TypeScript, frontend development, local mock servers, authentication, failures, and latency. Each guide starts with the direct answer, uses product-accurate examples, and links to the exact reference documentation.
A TypeScript interface can become a working mock REST endpoint by defining the response contract, binding it to a resource, and running the synchronized project locally. This guide compares that workflow with maintaining JSON fixtures by hand.
Read the guide →Mock a REST API by agreeing on the contract, serving predictable local resources, and keeping the base URL configurable. Add stateful CRUD and query behavior only when the frontend needs them.
Read the guide →A mock API is the simulated interface and behavior a client calls; a mock server is the process that receives those requests and returns the simulated responses. Teams often use the terms interchangeably, but the distinction helps when choosing between static fixtures and a stateful runtime.
Read the guide →Build the frontend before the backend is ready by agreeing on contracts, serving realistic local data, and testing every important UI state. Keep assumptions explicit so the later integration is a controlled change rather than a surprise.
Read the guide →Mock authentication, failures, and latency by protecting a local project, configuring fixed delay and 503 injection, and documenting repeatable frontend or QA scenarios. Use statuses produced by real runtime behavior and be explicit about unsupported arbitrary responses.
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