esm: remove .node support

Refs: nodejs/modules#180

PR-URL: nodejs/ecmascript-modules#6
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: John-David Dalton <john.david.dalton@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

Author: MylesBorins

doc/api/esm.md

@@ -176,7 +176,6 @@ module. This can be one of the following:
 | `'esm'` | Load a standard JavaScript module |
 | `'cjs'` | Load a node-style CommonJS module |
 | `'builtin'` | Load a node builtin CommonJS module |
-| `'addon'` | Load a [C++ Addon][addons] |
 | `'dynamic'` | Use a [dynamic instantiate hook][] |
 
 For example, a dummy loader to load JavaScript restricted to browser resolution
@@ -253,5 +252,4 @@ then be called at the exact point of module evaluation order for that module
 in the import tree.
 
 [Node.js EP for ES Modules]: https://github.com/nodejs/node-eps/blob/master/002-es-modules.md
-[addons]: addons.html
 [dynamic instantiate hook]: #esm_dynamic_instantiate_hook

lib/internal/modules/esm/default_resolve.js

@@ -47,7 +47,6 @@ function search(target, base) {
 const extensionFormatMap = {
   '__proto__': null,
   '.mjs': 'esm',
-  '.node': 'addon',
   '.js': 'cjs'
 };
 

lib/internal/modules/esm/translators.js

@@ -10,7 +10,6 @@ const internalURLModule = require('internal/url');
 const createDynamicModule = require(
   'internal/modules/esm/create_dynamic_module');
 const fs = require('fs');
-const { _makeLong } = require('path');
 const { SafeMap } = require('internal/safe_globals');
 const { URL } = require('url');
 const { debuglog, promisify } = require('util');
@@ -87,15 +86,3 @@ translators.set('builtin', async (url) => {
       reflect.exports.default.set(module.exports);
     });
 });
-
-// Strategy for loading a node native module
-translators.set('addon', async (url) => {
-  debug(`Translating NativeModule ${url}`);
-  return createDynamicModule(['default'], url, (reflect) => {
-    debug(`Loading NativeModule ${url}`);
-    const module = { exports: {} };
-    const pathname = internalURLModule.fileURLToPath(new URL(url));
-    process.dlopen(module, _makeLong(pathname));
-    reflect.exports.default.set(module.exports);
-  });
-});

src/module_wrap.cc

@@ -44,7 +44,7 @@ using v8::TryCatch;
 using v8::Undefined;
 using v8::Value;
 
-static const char* const EXTENSIONS[] = {".mjs", ".js", ".node"};
+static const char* const EXTENSIONS[] = {".mjs", ".js"};
 
 ModuleWrap::ModuleWrap(Environment* env,
                        Local<Object> object,