FAILURE MAP
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An astral scalar is escaped as a single invalid JSON escape · case 04

An astral scalar is escaped as a single invalid JSON escape.

Member previewVariant 4 · 3 implementations · 4 checks per implementation

Case contract

Serialize strings as ASCII-only JSON using surrogate pairs when needed.

Why this case matters

A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
boundary 1"\"\ud83d\ude00\"""\"\\ud83d\\ude00\""Failed

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