Add git sha to the built bundle.

.eslintignore

@@ -1,5 +1,6 @@
 src/vgl/**
 src/version.js
+src/sha.js
 src/util/wigglemaps.js
 src/util/distanceGrid.js
 geo.js

src/index.js

@@ -63,6 +63,7 @@ module.exports = $.extend({
   vectorFeature: require('./vectorFeature'),
   inherit: require('./inherit'),
   version: require('./version'),
+  sha: require('./sha'),
 
   util: require('./util'),
   d3: require('./d3'),

src/sha.js

@@ -0,0 +1 @@
+module.exports = GEO_SHA;

src/version.js

@@ -1 +1 @@
-module.exports = VERSION;
+module.exports = GEO_VERSION;

tests/cases/version.js

@@ -4,3 +4,10 @@ describe('geo.version', function () {
     expect(geo.version).toMatch(/[0-9]+\.[0-9]+\.[0-9]+[_a-zA-Z]*/);
   });
 });
+
+describe('geo.version', function () {
+  var geo = require('../test-utils').geo;
+  it('Git SHA is defined', function () {
+    expect(geo.sha).toMatch(/^[0-9a-f]{8,}$/);
+  });
+});

webpack.config.js

@@ -1,7 +1,17 @@
 var path = require('path');
 var webpack = require('webpack');
+var exec = require('child_process').execSync;
+var sha = '';
+
+try {
+  sha = exec('git rev-parse HEAD', {cwd: __dirname}).toString().trim();
+} catch (e) {
+  console.warn('Could not determine git hash.');
+}
+
 var define_plugin = new webpack.DefinePlugin({
-  VERSION: JSON.stringify(require('./package.json').version)
+  GEO_SHA: JSON.stringify(sha),
+  GEO_VERSION: JSON.stringify(require('./package.json').version)
 });
 
 module.exports = {