Yarn interprets "files" in package.json differently to npm, publishes more files than desired #5779
Description
Do you want to request a feature or report a bug?
Bug
What is the current behavior?
Yarn does not treat the "files" array in package.json as anchored to the root, npm does.
Yarn also adds a superfluous package entry, npm does not.
If the current behavior is a bug, please provide the steps to reproduce.
Run yarn pack for https://github.com/graphile/graphile-build/tree/master/packages/postgraphile-core (repo is managed using yarn workspaces) which has the following files array in package.json:
"files": [
"node8plus",
"index.js"
],
Result:
$ yarn pack
yarn pack v1.6.0
success Wrote tarball to "/Dev/graphile-build/packages/postgraphile-core/postgraphile-core-v4.0.0-beta.4.tgz".
✨ Done in 0.13s.
$ tar tf postgraphile-core-v4.0.0-beta.4.tgz
package
package/LICENSE.md
package/README.md
package/node8plus
package/package.json
package/src
package/node8plus/index.js
package/node8plus/index.js.flow
package/node8plus/index.js.map
package/src/index.js
What is the expected behavior?
$ npm pack
> postgraphile-core@4.0.0-beta.4 prepack /Dev/graphile-build/packages/postgraphile-core
> mkdir -p node8plus && babel -s true --out-dir node8plus src && flow-copy-source src node8plus
src/index.js -> node8plus/index.js
postgraphile-core-4.0.0-beta.4.tgz
$ tar tf postgraphile-core-4.0.0-beta.4.tgz
package/package.json
package/LICENSE.md
package/README.md
package/node8plus/index.js
package/node8plus/index.js.flow
package/node8plus/index.js.map
Note that no files from the src folder are present above.
Also note the package and package/node8plus bare entries are not present above. I believe this is why there is a package entry shown on unpkg.com under yarn vs unpkg.com under npm.
Please mention your node.js, yarn and operating system version.
$ yarn --version
1.6.0
$ node --version
v9.10.1
$ npm --version
5.6.0
$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.13.4
BuildVersion: 17E199