Migrate Dart assertions while preserving their actual equality and diagnostic semantics.
Editorial note checked 2026-10-29 against this instruction snapshot. Supporting scripts and runtime behavior remain outside this editorial review.
The guide covers dependency changes, incremental conversion and differences such as collection checks and reason messages. It is useful for avoiding mechanical substitutions that weaken tests.
Maintainers adopting package:checks in an existing test suite.
Similar assertion names can have different semantics. A migration that stops checking deep collection equality may pass while losing regression coverage.
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Inspect the pinned source snapshot and its supporting files first. The command selects this skill through the open-source skills CLI. Node.js and agent-specific setup may be required. Installation can download code. Catalog ingestion never executes skill instructions or install scripts.
npx skills add https://github.com/flutter/agent-plugins/tree/1bd8f2caa144c11b9153706c8de5f6d3e074b799/skills/dart-migrate-to-checks-package --skill dart-migrate-to-checks-packageReview pinned skill folder ↗ · CLI documentation ↗
After source review, use npx skills check and npx skills update to inspect and apply upstream updates. Re-check changed instructions before running them.
Static review only. This is not a security audit or a guarantee of safety.
SKILL.md text only; scripts, dependencies and runtime behavior not audited.
Allowed tools declaration: Unknown. Runtime permissions and network behavior: Unknown.
78/100 · Metadata coverage 80% · Model 1.0
Scores summarize observable discovery signals. Popularity and repository activity apply to the whole repository. Unknown runtime safety earns no certification.
Inventory assertion patterns, choose a small file set and translate each expectation according to the supported checks API.
Run converted tests with deliberately failing fixtures, inspect failure messages and compare collection, exception and asynchronous assertions before expanding the migration.
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