feat(default): implement binaryen optimization

use dafault global optimization Module#optimize()
```json
{
  optimization: "-O2 and -Os",
  passes: [
      "duplicate-function-elimination",
      "inlining-optimizing",
      "remove-unused-module-elements",
      "memory-packing"
  ]
  debug: false //◀️setDebugInfo(false)
}
```
default `passes` are from:
https://github.com/WebAssembly/binaryen
on `src/passes/pass.cpp#L190-L204`

Author: DrSensor

.eslintrc.js

@@ -7,6 +7,7 @@ module.exports = {
       'error',
       { singleQuote: true, trailingComma: 'es5', arrowParens: 'always' },
     ],
-    'prefer-destructuring': ['error', {'object': true, 'array': false}]
+    'prefer-destructuring': ['error', {'object': true, 'array': false}],
+    'line-comment-position': ['off'],
   },
 };

package-lock.json

@@ -45,6 +45,7 @@
   },
   "dependencies": {
     "@webpack-contrib/schema-utils": "^1.0.0-beta.0",
+    "binaryen": "^48.0.0",
     "loader-utils": "^1.1.0"
   },
   "devDependencies": {

package.json

@@ -1,30 +1,28 @@
+import assert from 'assert';
+
 import { getOptions } from 'loader-utils';
 import validate from '@webpack-contrib/schema-utils';
+import { readBinary, setDebugInfo } from 'binaryen';
 
 import schema from './options.json';
 
-export const raw = false;
+export const raw = true;
 
 export default function loader(source) {
-  const { version, webpack } = this;
+  assert(source instanceof Buffer); // ⬅️ verify if the loaded source is binary file
 
-  const options = getOptions(this) || {};
+  const wasmModule = readBinary(source);
+  const options = getOptions(this) || {}; // ⬅️ empty object for "if-able"
 
   validate({
     name: 'binaryen-loader',
-    schema,
+    schema, // ⬅ ️validate options using JSON-schema in options.json
     target: options,
   });
 
-  const newSource = `
-  /**
-   * Loader API Version: ${version}
-   * Is this in "webpack mode": ${webpack}
-   */
-  /**
-   * Original Source From Loader
-   */
-  ${source}`;
-
-  return `${newSource}`;
+  // `..|| false` since docs not clear enough about the default value
+  setDebugInfo(options.debug || false);
+  wasmModule.optimize();
+
+  return wasmModule.emitBinary();
 }

src/index.js

@@ -1,9 +1,9 @@
 {
   "type": "object",
   "properties": {
-    "name": {
+    "debug": {
       "type": "boolean"
     }
   },
   "additionalProperties": false
-}
+}