feat: add clone option to config

Author: dmitrytavern

src/index.ts

@@ -19,7 +19,9 @@ export function defineOptions<Props, Return extends Required<Props>>(
 		if (isArray(properties) || !isObject(properties))
 			throw 'the first argument is not an object. Please, use the type of object'
 
-		return parseProperties(properties, propertiesSettings)
+		const props = config && config.clone ? { ...properties } : properties
+
+		return parseProperties(props, propertiesSettings)
 	} catch (e) {
 		errorLog(e, config ? config.mode : 'strict')
 	}

tests/index.test.ts

@@ -8,3 +8,16 @@ it('Check plugin arguments', () => {
 	expect(() => defineOptions([], ['hello'])).toThrow()
 	expect(() => defineOptions([], {})).toThrow()
 })
+
+it('Check plugin config', () => {
+	const object = {}
+
+	const newObject = defineOptions(
+		object,
+		{ name: { required: false, default: 'hello' } },
+		{ clone: true }
+	)
+
+	expect(object).toEqual({})
+	expect(newObject).toEqual({ name: 'hello' })
+})

types/index.d.ts

@@ -42,6 +42,7 @@ export type OptionSettings<Properties> =
 export type ConfigMode = 'strict' | 'log' | 'disabled'
 export interface Config {
 	mode?: ConfigMode
+	clone?: boolean
 }
 
 export function defineOptions<Properties, Return = Required<Properties>>(