YARN

Using & to run scripts in parallel

Using && to run scripts in serial

For Performance

# .yarnrc.yml
compressionLevel: 0
nmMode: hardlinks-local
enableGlobalCache: true
save-prefix: "" # "~" or "^"

package.json

• Caret (^): matches the most recent major version (the first number). ^1.2.3 will match any 1.x.x release including 1.3.0, but will hold off on 2.0.0.
• Tilde (~): matches the most recent `minor
• version (the middle number).~1.2.3will match all1.2.xversions but will miss1.3.0`.

So for version zero software, the caret behaves like the tilde.

Both ~0.1.2 and ^0.1.2 will match the most recent 0.1 software, but ignore 0.2.x since it could be incompatible.

Resources

• Migrating our Monorepo to Yarn 2