FAILURE MAP
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Peer dependency diagnostics: Missing peers are classified as version failures · case 03

Missing peers are classified as version failures.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

For each peer in declaration order, ignore missing optional peers, report missing required peers, report too-old installed peers, report too-new peers, and accept inclusive lower/exclusive upper versions.

Why this case matters

An offline model of peer dependency diagnostics, suitable for testing build and release tooling without external services.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
fixture 2[["a", "low"]][["a", "missing"]]Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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