The staging directory was dist/.build-XXXXXX. A build that is killed cannot remove it, the next build removed
only its own, and "files": ["dist"] put the leftover into the npm tarball. .gitignore hid it from git status and
the freshness test skipped every name starting with ".build-", so nothing reported it.
The staging directory is now .dist-staging beside the output (.<name>-staging for --out <dir>) and is cleared at
the start of each build. The freshness test no longer skips anything: a stray file under dist/ fails it.
Checked in a scratch copy: a build stopped with SIGKILL after 1.5 s leaves .dist-staging/ and an unchanged dist/;
npm pack lists 36 files, none from the staging directory; the next build removes it. New test for the same on a
temporary package. npm test: 28 pass in 8.2-9.5 s.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
"exports" gains "import" and "types" next to "require": import "alex2node" failed with
ERR_PACKAGE_PATH_NOT_EXPORTED. scripts/build.mjs compiles src/ to dist/cjs, dist/esm and dist/types in a staging
directory and swaps them in only when both compiler runs passed. "main" and "types" follow for resolvers that do
not read "exports". Target ES6 -> ES2020, "engines": node >= 18, relative imports carry ".js" for Node's ESM loader.
uuid gives way to crypto.randomUUID(); mqtt is the only runtime dependency left.
Tests load the package by name. New: both entry points, the modules the builds import, dist/ equal to a fresh
build, a round trip on the ES module build, and two compiled type fixtures in place of the .d.ts regexes.
22 tests pass in 5.7 s. dist/: 16 files, 79,711 B -> 25 files, 132,291 B; the npm tarball is 25,125 B.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
