fix for node v10

.travis.yml

@@ -1,6 +1,7 @@
 language: node_js
 node_js:
   - "6"
+  - "10"
 script:
   - npm link
   - npm link datafire

bin/datafire

@@ -1,6 +1,7 @@
 #!/usr/bin/env node
-if (process.version > 'v6') {
+var version = require('../src/util/node-version.js');
+if (version > 6) {
   module.exports = require('../src/cmd');
 } else {
-  module.exports = require('../distribution/cmd');
+  module.exports = require('../distribution/src/cmd');
 }

src/cmd.js

@@ -1,11 +1,18 @@
 let yargs = require('yargs').argv;
 let logger = require('./util/logger');
+let npath = require('path');
+
+let packageFile = npath.join(__dirname, '..');
+if (packageFile.endsWith('distribution')) {
+  packageFile = npath.join(packageFile, '..');
+}
+packageFile = npath.join(packageFile, 'package.json');
 
 const COMMANDS = [{
   name: 'version',
   description: "Shows the current version",
   runner: args => {
-    console.log("DataFire v" + require('../package').version);
+    console.log("DataFire v" + require(packageFile).version);
     return Promise.resolve();
   }
 }, {

src/entry.js

@@ -1,4 +1,5 @@
-if (process.version > 'v6') {
+var version = require('./util/node-version.js');
+if (version > 6) {
   module.exports = require('./index');
 } else {
   module.exports = require('../distribution/src/index');

src/test/flow.js

@@ -30,7 +30,8 @@ describe('Flow', () => {
         })
     })
     .then(_ => {
-      if (process.version < 'v6') {
+      let version = require('../util/node-version');
+      if (version <= 4) {
         delete results[2]; // FIXME: last result not getting added in node v4.2
       }
       expect(context.results).to.deep.equal(results);

src/util/node-version.js

@@ -0,0 +1,4 @@
+// Note: keep this file compatible with old NodeJS versions (<= 4)
+var version = process.version.substring(1);
+version = +version.split('.')[0];
+module.exports = version;