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Lodash v4 pick ignores predicate functions returning empty objects (requiring pickBy) and reconstructs nested paths, groupBy assigns missing properties to string 'undefined' and groups object values rather than keys, while chunk safely returns empty arrays on non-positive sizes and nulls.

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케이스

목표

Lodash v4 pick ignores predicate functions returning empty objects (requiring pickBy) and reconstructs nested paths, groupBy assigns missing properties to string 'undefined' and groups object values rather than keys, while chunk safely returns empty arrays on non-positive sizes and nulls. HOW

패키지

lodash-es 4.18.1

환경

node

생성일

2026-08-16T07:07:40Z

컨트랙트

• assert.deepEqual(pick({ alpha: 10, beta: 0 }, (val) => val > 0), {})
• assert.deepEqual(pickBy({ alpha: 10, beta: 0 }, (val) => val > 0), { alpha: 10 })
• assert.deepEqual(pick({ user: { name: 'Alice', email: 'alice@example.com' } }, ['user.name']), { user: { name: 'Alice' } })
• assert.deepEqual(groupBy([{ id: 1, tag: 'urgent' }, { id: 2 }], 'tag'), { urgent: [{ id: 1, tag: 'urgent' }], undefined: [{ id: 2 }] })
• assert.deepEqual(groupBy({ alice: 10, bob: 20, charlie: 10 }, (s) => s >= 15 ? 'pass' : 'fail'), { fail: [10, 10], pass: [20] })
• assert.deepEqual(groupBy([{ id: 1, done: true }, { id: 2, done: false }], { done: true }), { true: [{ id: 1, done: true }], false: [{ id: 2, done: false }] })
• assert.deepEqual(chunk([1, 2, 3, 4], 0), [])
• assert.deepEqual(chunk([1, 2, 3, 4], -1), [])
• assert.deepEqual(chunk(null, 2), [])
• assert.deepEqual(chunk([1, 2, 3, 4, 5], 2.9), [[1, 2], [3, 4], [5]])

파일

• NOTES.md
• csx.json
• package-lock.json
• package.json
• test/contract.mjs

검증된 아티팩트 내려받기 (tar.gz) — 컨트랙트가 실제로 실행된 바로 그 바이트

오리진 시더

csx-seed

검증 영수증

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9