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fix(cli): skip identical writes and emit atomically #133

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d940e89
fix(cli): skip identical writes and emit atomically
SimenB Aug 28, 2026
210f42a
test(cli): skip the mode assertion on Windows
SimenB Aug 28, 2026
6378bf3
fix(cli): use write-file-atomic for emitted files
SimenB Aug 28, 2026
ebf88f1
reorder
SimenB Aug 28, 2026
1421d5b
fix(cli): follow symlinked copy destinations and close handles on fai…
SimenB Aug 28, 2026
414d2d1
fix(cli): handle dangling links, long names and special files
SimenB Aug 31, 2026
789a615
fix(cli): resolve dangling symlinks before writing output
SimenB Aug 31, 2026
e9d0eb6
fix(cli): write directly when a temp file cannot be created
SimenB Aug 31, 2026
5237f26
fix(cli): follow whole symlink chains and guard special files
SimenB Aug 31, 2026
c1d2209
Merge branch 'main' into atomic-rwite
SimenB Aug 31, 2026
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5 changes: 5 additions & 0 deletions .changeset/thick-rings-punch.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@swc/cli": patch
---

Skip the write when emitted output is byte-identical, and write through a temp file plus rename so watch consumers never read a partially written file
4 changes: 3 additions & 1 deletion packages/cli/package.json
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Expand Up @@ -55,7 +55,8 @@
"semver": "^7.3.8",
"slash": "3.0.0",
"source-map": "^0.7.3",
"tinyglobby": "^0.2.13"
"tinyglobby": "^0.2.13",
"write-file-atomic": "^7.0.1"
},
"devDependencies": {
"@swc/cli": "0.8.0",
Expand All @@ -65,6 +66,7 @@
"@types/jest": "^29.5.0",
"@types/node": "^20.11.5",
"@types/semver": "^7.3.13",
"@types/write-file-atomic": "^4.0.3",
"chokidar": "^5.0.0",
"deepmerge": "^4.2.2",
"jest": "^29.5.0",
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