use glob module to get the icu_data directory

app.js

@@ -21,40 +21,12 @@ if (!semver.satisfies(nodejsVersion, '>=6.9.0')) {
 // This function should be called before the require('yargs').
 function setICUEnvVariable() {
     if (process.env.ICU_DATA === undefined) {
-        // There are 3 ways to set the env variable. Option 1 doesn't work. Option 2 is the best alternative.
-
-        // 1
-        // The best approach to generate the path where the ICU DATA is stored is by calling binary.find()
-        // Sadly, it fails. It generates the correct path, but mapnik raises "could not create BreakIterator: U_MISSING_RESOURCE_ERROR"
-        const binary = require('node-pre-gyp');
-        let binding_path = binary.find(path.resolve(path.join(__dirname, 'node_modules/mapnik/package.json')));
-        binding_path = path.dirname(binding_path);
-        // If we hardcode de path, it works. the call to binary.find seems to be the problem here.
-        // var binding_path = __dirname + '/node_modules/mapnik/lib/binding/node-v48-linux-x64/';
-        process.env.ICU_DATA1 = path.join(binding_path, 'share/mapnik/icu/');
-        console.log('process.env.ICU_DATA1: ', process.env.ICU_DATA1);
-
-        // 2
-        // Alternative to 1 using glob module.
         const glob = require('glob');
         let directory = glob.sync(__dirname + '/node_modules/mapnik/lib/binding/*/share/mapnik/icu/');
 
         if (directory && directory.length > 0) {
-            process.env.ICU_DATA2 = directory[0];
+            process.env.ICU_DATA = directory[0];
         }
-        console.log('process.env.ICU_DATA2: ', process.env.ICU_DATA2);
-        
-        // 3
-        // hardcoded. not multiplatform (just works in some linuxes)
-        process.env.ICU_DATA3 = __dirname + '/node_modules/mapnik/lib/binding/node-v48-linux-x64/share/mapnik/icu/';
-        console.log('process.env.ICU_DATA3: ', process.env.ICU_DATA3);
-        
-        
-        console.log(process.env.ICU_DATA1 === process.env.ICU_DATA2);
-        console.log(process.env.ICU_DATA2 === process.env.ICU_DATA3);
-
-        process.env.ICU_DATA = process.env.ICU_DATA3;
-        console.log(process.env.ICU_DATA)
     }
 }
 setICUEnvVariable();

package.json

@@ -33,6 +33,7 @@
     "dot": "~1.0.2",
     "express": "~4.16.0",
     "fastly-purge": "~1.0.1",
+    "glob": "^7.1.2",
     "log4js": "cartodb/log4js-node#cdb",
     "lru-cache": "2.6.5",
     "lzma": "~2.3.2",