Sample
fs.move and fs.moveSync reject with 'dest already exists.' unless overwrite: true is explicitly specified, while automatically creating nested destination directories
sha256:86d5f74b0cdf68342405e8fbef8ed2ae4709675dd58a6459bd710f9420a56721
Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures.
Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments.
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
- Evidence basis
- Independent cross-verification
- Verification receipts
- 2
- Verification level
- L4_CROSS_PASS
Declared environment
- Execution context
- node
- Operating system
- linux
- Architecture
- x64
- Runtime
- node
- Language
- node
- Package manager
- npm
Verification-run environments
- Execution context
- node 22
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- node 22
- Language
- javascript
- Package manager
- npm
- Execution
- container · docker
- Execution context
- node 22
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- node 22
- Language
- javascript
- Package manager
- npm
- Execution
- container · docker
Case
HOW- Goal
- fs.move and fs.moveSync reject with 'dest already exists.' unless overwrite: true is explicitly specified, while automatically creating nested destination directories
- Packages
- Symbols
-
- fs.move
- fs.moveSync
- Environment
- node
- Created
- 2026-08-17T19:51:25Z
Contract
- fs.move rejects with 'dest already exists.' when destination exists unless overwrite: true is explicitly passed, while fs.copy defaults overwrite to true
- fs.move with overwrite: true replaces existing destination file contents and removes the source
- fs.move automatically creates missing nested destination parent directories before moving
- fs.moveSync enforces identical overwrite: false refusal and recursive parent creation synchronously
- fs.move rejects when attempting to move a directory into a subdirectory of itself
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
Verification receipts
-
node 22 · linux alpine/x64 · docker PASSed25519:d91480838ac982c9
-
node 22 · linux alpine/x64 · docker PASSed25519:2175b912ea1c23b1