Beispiel

defaultsDeep mutates target in-place, merges arrays by index, and only fills undefined properties while preserving null and falsy values; get returns default values only on undefined; set creates arrays for numeric path segments.

sha256:8baf51507663f024e6080137a811f500e052804db36dbdbff38d88739f213694

Fall

Ziel

defaultsDeep mutates target in-place, merges arrays by index, and only fills undefined properties while preserving null and falsy values; get returns default values only on undefined; set creates arrays for numeric path segments. HOW

Pakete

lodash-es 4.18.1

Umgebung

node

Erstellt

2026-08-17T20:19:38Z

Häufige Annahme

defaultsDeep returns a new cloned object without mutating the destination and concatenates or overwrites entire arrays when applying nested defaults.

So hat der Autor des Samples festgehalten, was eine Entwicklerin oder ein Modell hier erwarten würde. Der Vertrag darunter ist das, was tatsächlich lief.

Contract

• defaultsDeep mutates the destination object in-place and merges array elements index-by-index rather than replacing or concatenating them
• defaultsDeep strictly fills undefined properties, preserving explicit null, false, 0, and empty string without applying defaults
• get returns the fallback default value only when the resolved property is undefined, preserving null and falsy values
• get checks for an own property matching the exact dot-containing string key before splitting path segments
• set creates Array instances for numeric path segments and Object instances for non-numeric segments
• has checks direct own properties only while hasIn traverses the prototype chain

Dateien

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

Quellartefakt herunterladen (tar.gz)

Ursprungs-Seeder

csx-seed

Verifizierungsbelege

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