From bec0f1da6d55a2d9b7a9dda99d392534d2cc30a3 Mon Sep 17 00:00:00 2001
From: jai <86279939+Jayavardhan11@users.noreply.github.com>
Date: Wed, 23 Jul 2025 14:55:25 +0530
Subject: [PATCH] feat(core): add schema helper functions (string, number,
 object, etc.)

Added core functions like string(), object(), array(), $ref(), nullable() to build JSON schemas concisely.
---
 src/schema-kit.ts | 78 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 src/schema-kit.ts

diff --git a/src/schema-kit.ts b/src/schema-kit.ts
new file mode 100644
index 0000000..291c631
--- /dev/null
+++ b/src/schema-kit.ts
@@ -0,0 +1,78 @@
+import type {
+  Schema,
+  StringSchema,
+  NumberSchema,
+  IntegerSchema,
+  BooleanSchema,
+  ObjectSchema,
+  ArraySchema,
+  AnyOfSchema,
+  RefSchema,
+} from './types'
+
+export function string(properties: Partial<StringSchema> = {}): StringSchema {
+  return {
+    type: 'string',
+    ...properties,
+  }
+}
+
+export function number(properties: Partial<NumberSchema> = {}): NumberSchema {
+  return {
+    type: 'number',
+    ...properties,
+  }
+}
+
+export function integer(properties: Partial<IntegerSchema> = {}): IntegerSchema {
+  return {
+    type: 'integer',
+    ...properties,
+  }
+}
+
+export function boolean(properties: Partial<BooleanSchema> = {}): BooleanSchema {
+  return {
+    type: 'boolean',
+    ...properties,
+  }
+}
+
+export function object(
+  members: Record<string, Schema>,
+  properties: Partial<ObjectSchema> = {}
+): ObjectSchema {
+  return {
+    type: 'object',
+    properties: members,
+    required: Object.keys(members),
+    additionalProperties: false,
+    ...properties,
+  }
+}
+
+export function array(itemSchema: Schema, properties: Partial<ArraySchema> = {}): ArraySchema {
+  return {
+    type: 'array',
+    items: itemSchema,
+    ...properties,
+  }
+}
+
+export function $ref(id: string): RefSchema {
+  return {
+    $ref: `#/$defs/${id}`,
+  }
+}
+
+export function anyOf(subschemas: Schema[]): AnyOfSchema {
+  return {
+    anyOf: subschemas,
+  }
+}
+
+export function nullable(schema: Schema): AnyOfSchema {
+  return 'anyOf' in schema
+    ? anyOf([...schema.anyOf, { type: 'null' }])
+    : anyOf([schema, { type: 'null' }])
+}