Can't build on iOS due supporting "n" version manager

Goals

Fix issue with shellScript Need to revert this PR https://github.com/realm/realm-js/pull/2078

Expected Results

Build and Run iOS app

Actual Results

RealmJS requires a node package manager (n or nvm).
Command /bin/sh failed with exit code 1

Steps to Reproduce

Replace shellScript in file src/RealmJS.xcodeproj on line 863 with code before PR:

shellScript = "if [[ -d \"$HOME/.asdf/shims\" ]]; then\n  export PATH=$HOME/.asdf/shims:$PATH\nfi\n\n[ -z \"$NVM_DIR\" ] && export NVM_DIR=\"$HOME/.nvm\"\n\nif [[ -s \"$HOME/.nvm/nvm.sh\" ]]; then\n  . \"$HOME/.nvm/nvm.sh\"\nelif [[ -x \"$(command -v brew)\" && -s \"$(brew --prefix nvm)/nvm.sh\" ]]; then\n  . \"$(brew --prefix nvm)/nvm.sh\"\nfi\n \nif [[ \"$(command -v nvm)\" ]]; then\n nvm install 7.10.0\nfi\n \n node ../scripts/download-realm.js ios --sync";

It works

Version of Realm and Tooling

• Realm JS SDK Version: 2.19
• Node or React Native: Node 10.13, ReactNative 0.57.4
• Client OS & Version: MacOS 10.13

[radeno]

@shubham1164 or just rewrite line 863 with shellScript = "node ../scripts/download-realm.js ios --sync";

[radeno]

@kneth any progress of this? I know it is paused due test issues https://github.com/realm/realm-js/pull/2109 . Quick hot fix should be removing exit statement. It will work like before merging commit but still support of n