lib,doc: revert format name to cjs over commonjs

PR-URL: nodejs#18596
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Tiancheng "Timothy" Gu <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

Author: guybedford

doc/api/esm.md

@@ -137,7 +137,7 @@ module. This can be one of the following:
 | `format` | Description |
 | --- | --- |
 | `"esm"` | Load a standard JavaScript module |
-| `"commonjs"` | Load a node-style CommonJS module |
+| `"cjs"` | Load a node-style CommonJS module |
 | `"builtin"` | Load a node builtin CommonJS module |
 | `"json"` | Load a JSON file |
 | `"addon"` | Load a [C++ Addon][addons] |

lib/internal/loader/DefaultResolve.js

@@ -44,7 +44,7 @@ const extensionFormatMap = {
   '.mjs': 'esm',
   '.json': 'json',
   '.node': 'addon',
-  '.js': 'commonjs'
+  '.js': 'cjs'
 };
 
 function resolve(specifier, parentURL) {

lib/internal/loader/Translators.js

@@ -32,7 +32,7 @@ translators.set('esm', async (url) => {
 // Strategy for loading a node-style CommonJS module
 const isWindows = process.platform === 'win32';
 const winSepRegEx = /\//g;
-translators.set('commonjs', async (url) => {
+translators.set('cjs', async (url) => {
   debug(`Translating CJSModule ${url}`);
   const pathname = internalURLModule.getPathFromURL(new URL(url));
   const module = CJSModule._cache[