pnpm version:

7.5.2

Code to reproduce the issue:

use node 17.9.1 and pnpm 7.5.2
https://github.com/ItamarGronich/pnpm-bug-child-concurrency

Expected behavior:

child-concurrency is parsed as number and not a string

Actual behavior:

child-concurrency is parsed as a string

Additional information:

Using share-workspace-lockfile=false and child-concurrency=10 doesn't work.
pnpm seems to parse it as a string instead of a number and throws:

ERROR  Expected `concurrency` to be a number from 1 and up

TypeError: Expected `concurrency` to be a number from 1 and up
    at pLimit (/Users/itamar.gronich/.nvm/versions/node/v17.9.1/lib/node_modules/pnpm/dist/pnpm.cjs:51274:15)
    at exports2.default (/Users/itamar.gronich/.nvm/versions/node/v17.9.1/lib/node_modules/pnpm/dist/pnpm.cjs:108848:24)
    at _rebuild (/Users/itamar.gronich/.nvm/versions/node/v17.9.1/lib/node_modules/pnpm/dist/pnpm.cjs:109882:38)
    at rebuildProjects (/Users/itamar.gronich/.nvm/versions/node/v17.9.1/lib/node_modules/pnpm/dist/pnpm.cjs:109766:41)
    at async /Users/itamar.gronich/.nvm/versions/node/v17.9.1/lib/node_modules/pnpm/dist/pnpm.cjs:110449:13

I'm actually not 100% sure about what child-concurrency does precisely.
I thought i can make pnpm install faster in a split lockfile scenario because it will just run on more packages concurrently. where it by default installs only 4 packages concurrently and then moves on to the next.

I tried some different configs - workspace-concurrency works as expected however.

I did some debugging and i think (i think) that it maybe comes from here and possibly from here too.

• node -v prints: 17.9.1
• macOS

Side track warning:
I actually discovered something i think is another bug:
when you remove the child-concurrency flag you can see that the first 4 packages are indeed installed concurrently.
However the next packages don't. pnpm basically waits for all 4 packages to finish, only then does it start the next packages but even then it does them one by one.
I would have expected that as soon as one package finishes, another will take it's place so there's always 4 running.
Let me know if you want me to open another bug for this.
Side tracking done.