feat(staticLoader): a static loader to support packaging

Signed-off-by: Tobias Gurtzick <magic@wizardtales.com>

Author: wzrdtales

.gitignore

@@ -1,5 +1,7 @@
 migrations/
 node_modules/
+lib/commands/generated.js
+.tern-port
 VCSeeder/
 Seeder/
 *.db
@@ -11,6 +13,7 @@ database.json
 *.sublime-workspace
 archive
 .db-migraterc
+coverage.html
 
 # Vim swap files
 .*.sw[a-z]

api.js

@@ -1,10 +1,11 @@
 'use strict';
 
-var load = require('./lib/commands');
+module.exports.version = require('./package.json').version;
+
+let load;
 var log = require('db-migrate-shared').log;
-require('pkginfo')(module, 'version'); // jshint ignore:line
 var Promise;
-var onComplete = load('on-complete');
+let onComplete;
 
 // constant hooks for this file
 var APIHooks = {
@@ -17,12 +18,18 @@ var APIHooks = {
 };
 
 function dbmigrate (plugins, isModule, options, callback) {
+  if (!options.staticLoader) load = require('./lib/commands');
+  else load = require('./lib/commands/generated.js');
+
+  onComplete = load('on-complete');
+
   var dotenv = require('dotenv');
   var setDefaultArgv = load('set-default-argv');
 
   this.internals = {
     onComplete: onComplete,
-    migrationProtocol: 1
+    migrationProtocol: 1,
+    load
   };
   if (typeof isModule !== 'function') {
     this.internals.isModule = isModule;

generateLoader.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const path = require('path');
+const recursive = require('final-fs').readdirRecursive;
+const start = path.join(__dirname, 'lib/commands');
+const Promise = require('bluebird');
+const fs = require('fs');
+
+(async () => {
+  const files = await recursive(start, true);
+  const template = `
+'use strict';
+
+const path = require('path');
+
+const files = {
+${files
+  .map(x => `  "${x.substring(0, x.indexOf('.js'))}": require('./${x}')`)
+  .join(',\n')}
+}
+
+function register (module) {
+  return files[module];
+}
+
+module.exports = register;
+`;
+
+  fs.writeFile(
+    path.join(__dirname, 'lib/commands/generated.js'),
+    template,
+    'utf8',
+    err => {
+      if (err) throw err;
+    }
+  );
+})();

index.js

@@ -63,15 +63,12 @@ function loadPlugins (options) {
   return hooks;
 }
 
-module.exports.getInstance = function (
-  isModule,
-  options = { cwd: process.cwd() },
-  callback
-) {
+module.exports.getInstance = function (isModule, options = {}, callback) {
   delete require.cache[require.resolve('./api.js')];
   delete require.cache[require.resolve('optimist')];
   var Mod = require('./api.js');
   var plugins = {};
+  options.cwd = options.cwd || process.cwd();
 
   try {
     if (!options || !options.noPlugins) plugins = loadPlugins(options);

lib/commands/run.js

@@ -1,11 +1,13 @@
 'use strict';
 
 var log = require('db-migrate-shared').log;
-var optimist = require('optimist');
-var load = require('./');
-var transition = load('transition');
+var yargs = require('yargs');
+var transition;
 
 function run (internals, config) {
+  const { load } = internals;
+  const transition = load('transition');
+  console.log(load);
   var action = internals.argv._.shift();
   var folder = action.split(':');
 
@@ -117,7 +119,7 @@ function run (internals, config) {
           'Invalid Action: Must be [up|down|check|create|reset|sync|' +
             'db|transition].'
         );
-        optimist.showHelp();
+        yargs.showHelp();
         process.exit(1);
       }
       break;

package.json

@@ -33,7 +33,7 @@
   ],
   "version": "0.11.6",
   "engines": {
-    "node": ">=0.6.0"
+    "node": ">=8.0.0"
   },
   "bugs": {
     "url": "https://github.com/db-migrate/node-db-migrate/issues"
@@ -52,14 +52,13 @@
     "final-fs": "^1.6.0",
     "inflection": "^1.10.0",
     "mkdirp": "~0.5.0",
-    "optimist": "~0.6.1",
     "parse-database-url": "~0.3.0",
-    "pkginfo": "^0.4.0",
     "prompt": "^1.0.0",
     "rc": "^1.2.8",
     "resolve": "^1.1.6",
     "semver": "^5.3.0",
-    "tunnel-ssh": "^4.0.0"
+    "tunnel-ssh": "^4.0.0",
+    "yargs": "^15.3.1"
   },
   "devDependencies": {
     "code": "^4.1.0",
@@ -78,6 +77,7 @@
     "sinon": "^4.1.2"
   },
   "scripts": {
+    "prepublishOnly": "node generateLoader.js",
     "pretest": "eslint *.js lib/*.js test/*.js bin/*",
     "test": "make test-cov"
   }