Error: EROFS: read-only file system [MAC]

Question

I have an npm project in location:

~/dev/project

npm run build runs this script 'sh devDependencies/runbuild.sh'. Location of the script is here ~/dev/projectdevDependencies/runbuild.sh. I'm running the script in ~/dev/project.

runbuild.sh contents:

echo creating build/ folder
mkdir -m 0777 build 

echo copy /js/
cp -R js build/
chmod 0777 -R build/js

echo [changing rights] index.js
chmod 0777 build/js/index.js
    
browserify build/js/index.js -o /build/js/build.js

I get an error:

Error: EROFS: read-only file system, mkdir '/build'
    at Object.mkdirSync (fs.js:987:3)
    at sync (/usr/local/lib/node_modules/browserify/node_modules/mkdirp-classic/index.js:71:13)
    at Function.sync (/usr/local/lib/node_modules/browserify/node_modules/mkdirp-classic/index.js:77:24)
    at Object.<anonymous> (/usr/local/lib/node_modules/browserify/bin/cmd.js:64:12)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47 {
  errno: -30,
  syscall: 'mkdir',
  code: 'EROFS',
  path: '/build'
}

ls -l:

-rw-r--r--  1 sander  wheel  218175 Mar  9 14:28 bundle.js
-rw-r--r--  1 sander  wheel    7869 Mar  9 14:28 index.js

There are read and write access?

I have tried running the script in /tmp folder which gives the same result.

I have tried running as sudo which also gives same result.

I don't think I should run this command csrutil disable because that would be too extreme.

Where should I put my project so that I don't have this issue?

Answer 1

The problem is with this line:

browserify build/js/index.js -o /build/js/build.js

You should not have -o /build/js/, because that points to entirely different place than build/js/.