fix(tabtab): dont install tabtab in a development environment and ign…

…ore tabtab install errors

ISSUES CLOSED: #98

package.json

@@ -13,7 +13,7 @@
     "precommit": "npm run lint",
     "commit": "git-cz",
     "docs": "esdoc",
-    "install": "tabtab install --auto",
+    "install": "node tabtab-install.js",
     "lint": "eslint src test gulpfile.babel.js",
     "prepublish": "gulp build",
     "pretest": "gulp build",

tabtab-install.js

@@ -0,0 +1,11 @@
+const fs = require('fs');
+const path = require('path');
+const { findActualExecutable, spawnPromise } = require('spawn-rx');
+
+const tabtabPath = path.resolve(__dirname, './node_modules/.bin/tabtab');
+
+if (!fs.existsSync(path.resolve(__dirname, 'src'))) {
+  spawnPromise(findActualExecutable(tabtabPath).cmd, ['install', '--auto'], {
+    stdio: 'inherit',
+  }).catch(err => console.error('Failed to install tab completion:', err));
+}