Automatically bump manifest.json version when using npm version to avoid mistakes

Author: Joris-van-der-Wel

bin/_npm_version.js

@@ -0,0 +1,15 @@
+#!/usr/bin/env node
+'use strict';
+/* eslint-env node */
+const fs = require('fs');
+const path = require('path');
+
+const {version, description} = require('../package.json');
+
+const manifestPath = path.join(__dirname, '..', 'manifest.json');
+const original = fs.readFileSync(manifestPath, 'utf8');
+const manifestBody = JSON.parse(original);
+manifestBody.version = version;
+manifestBody.description = description;
+const updated = JSON.stringify(manifestBody, null, 4);
+fs.writeFileSync(manifestPath, updated);

package.json

@@ -14,7 +14,8 @@
     "test:unit:coveralls": "npm run test:unit:coverage && nyc report --reporter=text-lcov | coveralls",
     "test": "npm run lint && npm run test:unit:coverage && npm run test:unit:coverage:report",
     "test:server": "sh -c 'node test/testing-server.js \"$@\" | bunyan' --",
-    "start": "npm run build && \"$FIREFOX_BIN\" --no-remote --profile PRIV/profile --jsconsole"
+    "start": "npm run build && \"$FIREFOX_BIN\" --no-remote --profile PRIV/profile --jsconsole",
+    "version": "bin/_npm_version.js && git add manifest.json"
   },
   "author": "Joris van der Wel <joris@jorisvanderwel.com>",
   "license": "Apache-2.0",