Function shallowEqual

src/ink/dom.ts:295–316

(
  a: T | undefined,
  b: T | undefined,
)

}

function shallowEqual<T extends object>(
  a: T | undefined,
  b: T | undefined,
): boolean {
  // Fast path: same object reference (or both undefined)
  if (a === b) return true
  if (a === undefined || b === undefined) return false

  // Get all keys from both objects
  const aKeys = Object.keys(a) as (keyof T)[]
  const bKeys = Object.keys(b) as (keyof T)[]

  // Different number of properties
  if (aKeys.length !== bKeys.length) return false

  // Compare each property
  for (const key of aKeys) {
    if (a[key] !== b[key]) return false
  }

  return true
}

export const createTextNode = (text: string): TextNode => {
  const node: TextNode = {