Only clean bin directory when executing npm publish

Author: piranna

package.json

@@ -31,7 +31,7 @@
     "build": "scripts/preinstall && scripts/build",
     "install": "prebuild-install --download https://github.com/NodeOS/nodeos-cross-toolchain/releases/download/v{version}/{platform}-{arch}.tar.gz || npm run build",
     "postinstall": "scripts/postinstall",
-    "prepublish": "rm -rf bin/*-nodeos-linux-musl-* && truncate --size 0 bin/*",
+    "prepublish": "scripts/prepublish",
     "test": "scripts/test",
     "unbuild": "scripts/unbuild"
   },

scripts/prepublish

@@ -0,0 +1,31 @@
+#!/usr/bin/env node
+
+const fs = require('fs')
+
+
+const DIR = 'bin'
+
+const bins = Object.keys(require('../package.json').bin)
+
+
+// http://stackoverflow.com/a/34597104/586382
+// NPM will run prepublish script after `npm install` (https://docs.npmjs.com/misc/scripts)
+// This ensures that when script is executed using `npm *` it is run only when the command is `npm publish`.
+const npm_config_argv = process.env.npm_config_argv
+if(npm_config_argv && JSON.parse(npm_config_argv).original[0] === 'publish')
+  fs.readdir(DIR, function(err, files)
+  {
+    if(err) throw err
+
+    // Delete all files in the `bin` folder
+    files.forEach(function(file)
+    {
+      fs.unlinkSync(DIR+'/'+file)
+    })
+
+    // Re-create the symlinks stubs
+    bins.forEach(function(file)
+    {
+      fs.writeFileSync(DIR+'/'+file, '')
+    })
+  })