esm: minimal kernel

Refs: nodejs/modules#180

PR-URL: #6
PR-URL: #12
Co-authored-by: Myles Borins <MylesBorins@google.com>
Co-authored-by: John-David Dalton <john.david.dalton@gmail.com>

.eslintrc.js

@@ -39,7 +39,6 @@ module.exports = {
       files: [
         'doc/api/esm.md',
         '*.mjs',
-        'test/es-module/test-esm-example-loader.js',
       ],
       parserOptions: { sourceType: 'module' },
     },

doc/api/cli.md

@@ -268,13 +268,6 @@ default) is not firewall-protected.**
 
 See the [debugging security implications][] section for more information.
 
-### `--loader=file`
-<!-- YAML
-added: v9.0.0
--->
-
-Specify the `file` of the custom [experimental ECMAScript Module][] loader.
-
 ### `--max-http-header-size=size`
 <!-- YAML
 added: v11.6.0
@@ -711,7 +704,6 @@ Node.js options that are allowed are:
 - `--inspect`
 - `--inspect-brk`
 - `--inspect-port`
-- `--loader`
 - `--max-http-header-size`
 - `--napi-modules`
 - `--no-deprecation`
@@ -899,7 +891,6 @@ greater than `4` (its current default value). For more information, see the
 [debugger]: debugger.html
 [debugging security implications]: https://nodejs.org/en/docs/guides/debugging-getting-started/#security-implications
 [emit_warning]: process.html#process_process_emitwarning_warning_type_code_ctor
-[experimental ECMAScript Module]: esm.html#esm_loader_hooks
 [libuv threadpool documentation]: http://docs.libuv.org/en/latest/threadpool.html
 [remote code execution]: https://www.owasp.org/index.php/Code_Injection
 [secureProtocol]: tls.html#tls_tls_createsecurecontext_options

doc/api/errors.md

@@ -1449,26 +1449,19 @@ a `dynamicInstantiate` hook.
 A `MessagePort` was found in the object passed to a `postMessage()` call,
 but not provided in the `transferList` for that call.
 
-<a id="ERR_MISSING_MODULE"></a>
-### ERR_MISSING_MODULE
-
-> Stability: 1 - Experimental
-
-An [ES6 module][] could not be resolved.
-
 <a id="ERR_MISSING_PLATFORM_FOR_WORKER"></a>
 ### ERR_MISSING_PLATFORM_FOR_WORKER
 
 The V8 platform used by this instance of Node.js does not support creating
 Workers. This is caused by lack of embedder support for Workers. In particular,
 this error will not occur with standard builds of Node.js.
 
-<a id="ERR_MODULE_RESOLUTION_LEGACY"></a>
-### ERR_MODULE_RESOLUTION_LEGACY
+<a id="ERR_MODULE_NOT_FOUND"></a>
+### ERR_MODULE_NOT_FOUND
 
 > Stability: 1 - Experimental
 
-A failure occurred resolving imports in an [ES6 module][].
+An [ESM module][] could not be resolved.
 
 <a id="ERR_MULTIPLE_CALLBACK"></a>
 ### ERR_MULTIPLE_CALLBACK