Function enableArrayMethods

src/plugins/arrayMethods.ts:100–440

()

 * @see https://immerjs.github.io/immer/array-methods
 */
export function enableArrayMethods() {
	const SHIFTING_METHODS = new Set<MutatingArrayMethod>(["shift", "unshift"])

	const QUEUE_METHODS = new Set<MutatingArrayMethod>(["push", "pop"])

	const RESULT_RETURNING_METHODS = new Set<MutatingArrayMethod>([
		...QUEUE_METHODS,
		...SHIFTING_METHODS
	])

	const REORDERING_METHODS = new Set<MutatingArrayMethod>(["reverse", "sort"])

	// Optimized method detection using array-based lookup
	const MUTATING_METHODS = new Set<MutatingArrayMethod>([
		...RESULT_RETURNING_METHODS,
		...REORDERING_METHODS,
		"splice"
	])

	const FIND_METHODS = new Set<NonMutatingArrayMethod>(["find", "findLast"])

	const NON_MUTATING_METHODS = new Set<NonMutatingArrayMethod>([
		"filter",
		"slice",
		"concat",
		"flat",
		...FIND_METHODS,
		"findIndex",
		"findLastIndex",
		"some",
		"every",
		"indexOf",
		"lastIndexOf",
		"includes",
		"join",
		"toString",
		"toLocaleString"
	])

	// Type guard for method detection
	function isMutatingArrayMethod(
		method: string
	): method is MutatingArrayMethod {
		return MUTATING_METHODS.has(method as any)
	}

	function isNonMutatingArrayMethod(
		method: string
	): method is NonMutatingArrayMethod {
		return NON_MUTATING_METHODS.has(method as any)
	}

	function isArrayOperationMethod(
		method: string
	): method is ArrayOperationMethod {
		return isMutatingArrayMethod(method) || isNonMutatingArrayMethod(method)
	}