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Powerduck9h ago · 4 min read

Codegen vs additionalProperties: When Free-Form Maps Break Typed Clients

Quick answer: An OpenAPI schema with additionalProperties describes a free-form map keyed by strings, and how a code generator turns that into typed code varies a lot between languages and generators.

blogs.powerduck.com

Powerduck13h ago · 6 min read

Generated Enums Break When the API Adds a New Value

Quick answer: A generated enum is a closed set by default, so the moment the server adds a value the client did not know about, strict generated code can throw, fail to deserialize, or silently drop t

blogs.powerduck.com

Powerduck1d ago · 4 min read

The OpenAPI Code Generation Guide: Clients, Servers, Types

Quick answer: OpenAPI code generation turns a contract into typed clients, server stubs, or models, so the types your code compiles against are the same types the service serves. The direction that pa

blogs.powerduck.com

PowerduckOct 8 · 7 min read

operationId and tags in OpenAPI: naming conventions that keep generated SDKs and docs usable

Open a generated SDK where the methods are named getV1UsersByIdGet, postV1UsersPost, and usersGet2, and the cost of careless operationIds is immediate: nobody can discover anything, and every rename i

blogs.powerduck.com

PowerduckOct 8 · 6 min read

OpenAPI additionalProperties: modeling maps, dictionaries, labels, and free-form objects without losing types

The word "object" hides three completely different data shapes. A User is a fixed record with known fields. A map of language codes to translations is an object whose keys are arbitrary but whose valu

blogs.powerduck.com

PowerduckOct 8 · 6 min read

readOnly and writeOnly in OpenAPI: one schema for create, response, and password fields

Most teams model the same resource three times: a User for responses, a CreateUser for requests, and a UpdateUser for patches. The copies drift within a sprint. The response forgets a field the reques

blogs.powerduck.com

PowerduckOct 7 · 7 min read

The JSON Schema constraints that actually work in OpenAPI: format, pattern, ranges, and what codegen and AI mocks do with them

Constraints are where an OpenAPI document either earns its keep or starts lying. Add format: uuid and one developer assumes the server validates it, another assumes the SDK parses it, and a generated

blogs.powerduck.com

Subramanya M RaoAug 27 · 17 min read

How We Migrated Five React Native Modules to TurboModules

Part 3 of 3. Part 2 covered rebuilding our React Native app on the New Architecture end to end and mentioned, in passing, “five custom TurboModules we wrote ourselves.” This article covers everything

subramanyarao.hashnode.dev

Pratham RathodJul 2 · 4 min read

Playwright Codegen: Generate Tests & Locators Fast

Generate Playwright tests and locators with Codegen. Record user actions, add assertions like visibility and text, and fine-tune locators for robust, reliable end-to-end tests. Playwright Codegen pro

prathamrathod.hashnode.dev

Brock ClaussenMay 20 · 8 min read

States, Transitions, Effects: What a `.gu` File Actually Buys

The previous post made the case for Gust as a workflow contract. This one is more concrete. Abstract language posts are cheap. The more useful question: what does a .gu file buy that ordinary code doe

blog.narcolepticfox.com

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Trending tags this week

Codegen vs additionalProperties: When Free-Form Maps Break Typed Clients

Generated Enums Break When the API Adds a New Value

The OpenAPI Code Generation Guide: Clients, Servers, Types

operationId and tags in OpenAPI: naming conventions that keep generated SDKs and docs usable

OpenAPI additionalProperties: modeling maps, dictionaries, labels, and free-form objects without losing types

readOnly and writeOnly in OpenAPI: one schema for create, response, and password fields

The JSON Schema constraints that actually work in OpenAPI: format, pattern, ranges, and what codegen and AI mocks do with them

How We Migrated Five React Native Modules to TurboModules

Playwright Codegen: Generate Tests & Locators Fast

States, Transitions, Effects: What a `.gu` File Actually Buys