feat(core): support JSON ruleset validation

package.json

@@ -30,7 +30,7 @@
     "lint": "yarn lint.prettier && yarn lint.eslint",
     "lint.fix": "yarn lint.prettier --write && yarn lint.eslint --fix",
     "lint.eslint": "eslint --cache --cache-location .cache/.eslintcache --ext=.js,.mjs,.ts packages test-harness",
-    "lint.prettier": "prettier --ignore-path .eslintignore --ignore-unknown --check packages/core/src/meta/*.json packages/rulesets/src/{asyncapi,oas}/schemas/*.json docs/**/*.md README.md",
+    "lint.prettier": "prettier --ignore-path .eslintignore --ignore-unknown --check packages/core/src/ruleset/meta/*.json packages/rulesets/src/{asyncapi,oas}/schemas/*.json docs/**/*.md README.md",
     "pretest": "yarn workspace @stoplight/spectral-ruleset-migrator pretest",
     "test": "yarn pretest && yarn test.karma && yarn test.jest",
     "test.harness": "jest -c ./test-harness/jest.config.js",
@@ -116,7 +116,7 @@
     "README.md": [
       "prettier --write"
     ],
-    "packages/core/src/meta/*.json": [
+    "packages/core/src/ruleset/meta/*.json": [
       "prettier --ignore-path .eslintignore --write"
     ],
     "packages/rulesets/src/{asyncapi,oas}/schemas/*.json": [

packages/core/package.json

@@ -1,8 +1,6 @@
 {
   "name": "@stoplight/spectral-core",
   "version": "1.11.1",
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
   "sideEffects": false,
   "homepage": "https://github.com/stoplightio/spectral",
   "bugs": "https://github.com/stoplightio/spectral/issues",
@@ -15,6 +13,19 @@
   "files": [
     "dist"
   ],
+  "type": "commonjs",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "require": "./dist/index.js"
+    },
+    "./ruleset/validation": {
+      "types": "./dist/ruleset/validation/index.d.ts",
+      "require": "./dist/ruleset/validation/index.js"
+    }
+  },
   "engines": {
     "node": "^12.20 || >= 14.13"
   },

packages/core/src/ruleset/__tests__/ruleset.test.ts

@@ -6,7 +6,7 @@ import { DiagnosticSeverity } from '@stoplight/types';
 import { Ruleset } from '../ruleset';
 import { RulesetDefinition } from '../types';
 import { print } from './__helpers__/print';
-import { RulesetValidationError } from '../validation';
+import { RulesetValidationError } from '../validation/index';
 import { isPlainObject } from '@stoplight/json';
 import { Format } from '../format';
 import { JSONSchema4, JSONSchema6, JSONSchema7 } from 'json-schema';

packages/core/src/ruleset/index.ts

@@ -1,4 +1,4 @@
-export { assertValidRuleset, RulesetValidationError } from './validation';
+export { assertValidRuleset, RulesetValidationError } from './validation/index';
 export { getDiagnosticSeverity } from './utils';
 export { createRulesetFunction, SchemaDefinition as RulesetFunctionSchemaDefinition } from './rulesetFunction';
 export { Format } from './format';

packages/core/src/ruleset/mergers/rules.ts

@@ -1,5 +1,5 @@
 import { Optional } from '@stoplight/types';
-import { assertValidRule } from '../validation';
+import { assertValidRule } from '../validation/assertions';
 import { Rule } from '../rule';
 import type { Ruleset } from '../ruleset';
 import { FileRuleDefinition } from '../types';

packages/core/src/ruleset/meta/js-extensions.json

@@ -0,0 +1,64 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "@stoplight/spectral-core/meta/extensions",
+  "$defs": {
+    "Extends": {
+      "$anchor": "extends",
+      "oneOf": [
+        {
+          "$id": "ruleset",
+          "$ref": "ruleset.schema#",
+          "errorMessage": "must be a valid ruleset"
+        },
+        {
+          "type": "array",
+          "items": {
+            "anyOf": [
+              {
+                "$ref": "ruleset"
+              },
+              {
+                "type": "array",
+                "minItems": 2,
+                "additionalItems": false,
+                "items": [
+                  {
+                    "$ref": "ruleset"
+                  },
+                  {
+                    "type": "string",
+                    "enum": ["off", "recommended", "all"],
+                    "errorMessage": "allowed types are \"off\", \"recommended\" and \"all\""
+                  }
+                ]
+              }
+            ]
+          }
+        }
+      ],
+      "errorMessage": "must be a valid ruleset"
+    },
+    "Format": {
+      "$anchor": "format",
+      "spectral-runtime": "format",
+      "errorMessage": "must be a valid format"
+    },
+    "Function": {
+      "$anchor": "function",
+      "spectral-runtime": "function",
+      "type": "object",
+      "properties": {
+        "function": true
+      },
+      "required": ["function"]
+    },
+    "Functions": {
+      "$anchor": "functions",
+      "not": {}
+    },
+    "FunctionsDir": {
+      "$anchor": "functionsDir",
+      "not": {}
+    }
+  }
+}

packages/core/src/ruleset/meta/json-extensions.json

@@ -0,0 +1,79 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "@stoplight/spectral-core/meta/extensions",
+  "$defs": {
+    "Extends": {
+      "$anchor": "extends",
+      "oneOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "array",
+                "minItems": 2,
+                "additionalItems": false,
+                "items": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "enum": ["all", "recommended", "off"],
+                    "errorMessage": "allowed types are \"off\", \"recommended\" and \"all\""
+                  }
+                ]
+              }
+            ]
+          }
+        }
+      ]
+    },
+    "Format": {
+      "$anchor": "format",
+      "enum": [
+        "oas2",
+        "oas3",
+        "oas3.0",
+        "oas3.1",
+        "asyncapi2",
+        "json-schema",
+        "json-schema-loose",
+        "json-schema-draft4",
+        "json-schema-draft6",
+        "json-schema-draft7",
+        "json-schema-draft-2019-09",
+        "json-schema-2019-09",
+        "json-schema-draft-2020-12",
+        "json-schema-2020-12"
+      ],
+      "errorMessage": "must be a valid format"
+    },
+    "Functions": {
+      "$anchor": "functions",
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    },
+    "FunctionsDir": {
+      "$anchor": "functionsDir",
+      "type": "string"
+    },
+    "Function": {
+      "$anchor": "function",
+      "type": "object",
+      "properties": {
+        "function": {
+          "type": "string"
+        }
+      },
+      "required": ["function"]
+    }
+  }
+}

packages/core/src/meta/rule.schema.json → packages/core/src/ruleset/meta/rule.schema.json

@@ -13,9 +13,7 @@
           }
         },
         {
-          "type": "object",
-          "spectral-runtime": "ruleset-function",
-          "required": ["function"]
+          "$ref": "extensions#function"
         }
       ]
     },

packages/core/src/meta/ruleset.schema.json → packages/core/src/ruleset/meta/ruleset.schema.json

@@ -9,49 +9,26 @@
       "format": "url",
       "errorMessage": "must be a valid URL"
     },
-    "description": { "type": "string" },
+    "description": {
+      "type": "string"
+    },
     "rules": {
       "type": "object",
       "additionalProperties": {
         "$ref": "rule.schema#"
       }
     },
+    "functions": {
+      "$ref": "extensions#functions"
+    },
+    "functionsDir": {
+      "$ref": "extensions#functionsDir"
+    },
     "formats": {
       "$ref": "shared#formats"
     },
     "extends": {
-      "oneOf": [
-        {
-          "$ref": "#",
-          "errorMessage": "must be a valid ruleset"
-        },
-        {
-          "type": "array",
-          "items": {
-            "oneOf": [
-              {
-                "$ref": "#/properties/extends/oneOf/0"
-              },
-              {
-                "type": "array",
-                "minItems": 2,
-                "additionalItems": false,
-                "items": [
-                  {
-                    "$ref": "#"
-                  },
-                  {
-                    "type": "string",
-                    "enum": ["off", "recommended", "all"],
-                    "errorMessage": "allowed types are \"off\", \"recommended\" and \"all\""
-                  }
-                ]
-              }
-            ]
-          }
-        }
-      ],
-      "errorMessage": "must be a valid ruleset"
+      "$ref": "extensions#extends"
     },
     "parserOptions": {
       "type": "object",