And to clarify, you should run this once by hand to collect the list, don't add the grepping to the actuall installation script or you are back to square one :D

Here's what I use with yarn, install.sh:

    #!/usr/bin/env bash

    yarn

    function run_install() {
      local dependency="node_modules/$1"
      if [[ -d "$dependency" ]]; then
        yarn --cwd "$dependency" run postinstall
      fi
    }

    run_install 'esbuild'
    run_install 'other_package'
    ...