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Better Auth · Plugins · all subjects

test-utils/installation

2 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Test Utils plugin installation in test-only auth config

The Test Utils plugin should be added to a separate test-only auth instance (such as auth.test.ts) rather than the production auth config. Import testUtils from 'better-auth/plugins' and add it to the plugins array. Access test helpers via const ctx = await auth.$context; const test = ctx.test.

TypeScript inference issue with conditional testUtils plugin spread

Better Auth infers plugin helpers best from statically defined plugin arrays. If testUtils() is conditionally spread into the plugins array (e.g., based on NODE_ENV), TypeScript may stop inferring ctx.test correctly. To preserve static type inference, include testUtils() unconditionally, though the recommended practice is to keep it in a separate test-only auth instance.

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