build: fix cjs builds

something we didn't realize when moving to named imports is that rollup doesn't consider those imports modules to be preserved, so we can't rely on the tests to find all the required files to build anymore

Author: mikeal

package.json

@@ -8,7 +8,7 @@
     "build": "rollup --config rollup.config.js",
     "prepublishOnly": "npm run build",
     "lint": "standard",
-    "test:cjs": "npm run build && du -a dist && mocha dist/test/test-*.cjs",
+    "test:cjs": "rm -rf dist && npm run build && mocha dist/test/test-*.cjs",
     "test:node": "hundreds mocha test/test-*.js",
     "test:browser": "polendina --webpack-config polendina.webpack.config.cjs --cleanup test/test-*.js",
     "test": "npm run lint && npm run test:node && npm run test:browser && npm run test:cjs",

rollup.config.js

@@ -3,13 +3,14 @@ import { join } from 'path'
 
 const dir = 'dist'
 const preserveModules = true
-const output = { dir, preserveModules, format: 'cjs', entryFileNames: '[name].cjs' }
-const testdir = join(__dirname, 'test')
-const filter = name => name.startsWith('test-')
-const createConfig = f => ({ input: join('test', f), output })
-
-const configs = readdirSync(testdir).filter(filter).map(createConfig)
-
+const configs = []
+for (const subdir of ['test', 'bases', 'hashes', 'codecs', '.']) {
+  const output = { dir: join(dir, subdir), preserveModules, format: 'cjs', entryFileNames: '[name].cjs' }
+  const testdir = join(__dirname, subdir)
+  const filter = name => name.endsWith('.js')
+  const createConfig = f => ({ input: join(subdir, f), output })
+  readdirSync(testdir).filter(filter).map(createConfig).forEach(c => configs.push(c))
+}
 console.log(configs)
 
 export default configs