perf(ui-trajectory): reuse finalized stream projections

2026-07-30 18:05:49 +08:00
parent 7ec01dad08
commit daed49ad54
6 changed files with 194 additions and 25 deletions
@@ -41,6 +41,12 @@ describe('PartialAccumulator', () => {
    expect(acc.toPartial().blocks).toEqual([{ kind: 'reasoning', text: '思考' }])
  })

+  it('continues from a materialized history prefix', () => {
+    const acc = new PartialAccumulator(1, 0, [{ kind: 'text', text: '已有' }])
+    acc.push(chunk({ type: 'text-delta', index: 0, text: '增量' }))
+    expect(acc.toPartial().blocks).toEqual([{ kind: 'text', text: '已有增量' }])
+  })
+
  it('folds tool-call deltas: first id pins callId, late name overrides, argsRaw concatenates', () => {
    const acc = new PartialAccumulator(1, 0)
    acc.push(chunk({ type: 'tool-call-delta', index: 0, id: 'c1', argumentsDelta: '{"a"' }))