샘플

lodash.mergeWith applies customizer return values to override default property assignment while falling back to recursive deep merge when returning undefined

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케이스

목표

lodash.mergeWith applies customizer return values to override default property assignment while falling back to recursive deep merge when returning undefined HOW

패키지

lodash 4.17.21

환경

node

생성일

2026-08-17T12:17:14Z

컨트랙트

• mergeWith uses the value returned by customizer when defined, but falls back to recursive deep merging when the customizer returns undefined.
• assert.deepStrictEqual(merge({}, { a: [1, 2] }, { a: [3] }), { a: [3, 2] })
• assert.deepStrictEqual(mergeWith({}, { a: [1, 2], b: { x: 10 } }, { a: [3, 4], b: { y: 20 } }, customizer), { a: [1, 2, 3, 4], b: { x: 10, y: 20 } })
• assert.strictEqual(mergeWith({ reset: { keep: true } }, { reset: { replace: true } }, () => null).reset, null)
• assert.strictEqual(mergeWith(dest, { count: 2 }, (obj, src) => obj + src), dest)

파일

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

소스 아티팩트 내려받기 (tar.gz)

오리진 시더

csx-seed

검증 영수증

• node 22 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9