feat: add effect schema as part of the standard and JSON schema implementation

package.json

@@ -113,6 +113,7 @@
     "@libsql/client": "*",
     "@valibot/to-json-schema": "^1.5.0",
     "better-sqlite3": "^12.5.0",
+    "effect": "^3.19.13",
     "sqlite3": "*",
     "valibot": "^1.2.0"
   },
@@ -154,6 +155,7 @@
     "@types/pg": "^8.16.0",
     "@types/ws": "^8.18.1",
     "@valibot/to-json-schema": "^1.5.0",
+    "effect": "^3.19.13",
     "csvtojson": "^2.0.14",
     "eslint": "^9.39.2",
     "happy-dom": "^20.0.11",

src/utils/context.ts

@@ -1,6 +1,6 @@
 import { createContext } from 'unctx'
 
-type ContextKey = 'zod3' | 'zod4' | 'valibot' | 'unknown'
+type ContextKey = 'zod3' | 'zod4' | 'valibot' | 'effect' | 'unknown'
 
 const nuxtContentContext = {
   zod3: {
@@ -27,6 +27,14 @@ const nuxtContentContext = {
       )
     },
   },
+  effect: {
+    toJSONSchema: (_schema: unknown, _name: string) => {
+      throw new Error(
+        'It seems you are using Effect Schema for collection schema, but Effect is not installed, '
+        + 'Nuxt Content does not ship with effect, install `effect` it will work.',
+      )
+    },
+  },
   unknown: {
     toJSONSchema: (_schema: unknown, _name: string) => {
       throw new Error('Unknown schema vendor')

src/utils/schema/effect.ts

@@ -0,0 +1,17 @@
+import { JSONSchema } from 'effect'
+import type { Draft07, Draft07Definition } from '../../types'
+
+export function toJSONSchema(schema: unknown, name: string): Draft07 {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const definitions = JSONSchema.make(schema as any, {
+    target: 'jsonSchema7',
+  }) as Draft07Definition
+
+  return {
+    $schema: 'http://json-schema.org/draft-07/schema#',
+    $ref: `#/definitions/${name}`,
+    definitions: {
+      [name]: definitions,
+    },
+  }
+}

src/utils/schema/index.ts

@@ -22,6 +22,9 @@ export function property<T extends ContentStandardSchemaV1>(input: T): Property<
       case 'valibot':
         schema.$content = $content
         return
+      case 'effect':
+        schema.$content = $content
+        return
       case 'zod4':
         (schema as unknown as { def: { $content: ContentConfig } }).def.$content = $content
         return
@@ -98,6 +101,10 @@ export function detectSchemaVendor(schema: ContentStandardSchemaV1) {
     return 'valibot'
   }
 
+  if (schema['~standard']?.vendor === 'effect') {
+    return 'effect'
+  }
+
   if (schema['~standard']?.vendor === 'zod') {
     return (schema as unknown as Record<string, unknown>).def ? 'zod4' : 'zod3'
   }