doc: allow the $schema property in node.config.json

The documentation states people can use the `$schema` property, but the JSON schema forbids this. This change allows it. PR-URL: #57560 Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com> Reviewed-By: Jordan Harband <ljharb@gmail.com> Reviewed-By: Moshe Atlow <moshe@atlow.co.il> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Pietro Marchini <pietro.marchini94@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>

Author: remcohaszing

doc/node-config-schema.json

@@ -2,6 +2,9 @@
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
+ "$schema": {
+ "type": "string"
+ },
  "nodeOptions": {
  "additionalProperties": false,
  "properties": {

lib/internal/options.js

@@ -45,6 +45,10 @@ function generateConfigJsonSchema() {
  $schema: 'https://json-schema.org/draft/2020-12/schema',
  additionalProperties: false,
  properties: {
+ $schema: {
+ __proto__: null,
+ type: 'string',
+ },
  nodeOptions: {
  __proto__: null,
  additionalProperties: false,