feat(staticLoader): a static loader to support packaging

Signed-off-by: Tobias Gurtzick <[email protected]>

Author: wzrdtales

.gitignore

@@ -1,5 +1,6 @@
 migrations/
 node_modules/
+lib/commands/generated.js
 .tern-port
 VCSeeder/
 Seeder/

api.js

@@ -2,10 +2,10 @@
 
 module.exports.version = require('./package.json').version;
 
-var load = require('./lib/commands');
+let load;
 var log = require('db-migrate-shared').log;
 var Promise;
-var onComplete = load('on-complete');
+let onComplete;
 var config = require('rc')('db-migrate');
 
 // constant hooks for this file
@@ -19,18 +19,25 @@ 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;
   }
   var internals = this.internals;
 
+  console.log(load('fn/plugin'));
   this.internals.plugins = load('fn/plugin')(plugins);
 
   if (typeof callback === 'function') this.internals.onComplete = callback;

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

@@ -64,15 +64,12 @@ 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('yargs')];
   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

@@ -2,10 +2,11 @@
 
 var log = require('db-migrate-shared').log;
 var yargs = require('yargs');
-var load = require('./');
-var transition = load('transition');
 
 function run (internals, config) {
+  const { load } = internals;
+  const transition = load('transition');
+  console.log(load);
   var action = internals.argv._.shift();
   var folder = action.split(':');
 

package.json

@@ -77,6 +77,7 @@
     "sinon": "^9.0.2"
   },
   "scripts": {
+    "prepublishOnly": "node generateLoader.js",
     "pretest": "eslint *.js lib/*.js",
     "test": "lab",
     "test:coverage": "lab -r html -o coverage.html"