Problem
compact({system: "x".repeat(5000)}, {maxTokens: 10}) throws Cannot read properties of undefined (reading 'length') once trimming kicks in on a system-only payload.
Where
src/index.mjs (compact: message-list handling assumes result messages exist).
Acceptance
Add a failing test first with a large system-only payload and small budget, expecting a report without throwing. Then fix.
Problem
compact({system: "x".repeat(5000)}, {maxTokens: 10})throwsCannot read properties of undefined (reading 'length')once trimming kicks in on a system-only payload.Where
src/index.mjs(compact: message-list handling assumes result messages exist).Acceptance
Add a failing test first with a large system-only payload and small budget, expecting a report without throwing. Then fix.