Function createConfig

packages/core/src/node.ts:2944–3015

* Creates a new configuration option. * * @param target - An object of optional properties of FormKitConfig | FormKitConfig * @param parent - A parent FormKitNode | FormKitNode * * @returns FormKitNode | FormKitNode * * @internal

(
  target: Partial<FormKitConfig> = {},
  parent?: FormKitNode | null
)

 * @internal
 */
function createConfig(
  target: Partial<FormKitConfig> = {},
  parent?: FormKitNode | null
): FormKitConfig {
  let node: FormKitNode | undefined = undefined
  const getExplicitInheritedValue = (prop: string) => {
    let currentParent = parent
    while (currentParent) {
      const parentValue = currentParent.config._t[prop]
      if (parentValue !== undefined) return parentValue
      currentParent = currentParent.parent
    }
    if (target.rootConfig) {
      const rootValue = target.rootConfig[prop]
      if (rootValue !== undefined) return rootValue
    }
    return undefined
  }
  return new Proxy(target, {
    get(...args) {
      const prop = args[1]
      if (prop === '_t') return target
      const localValue = Reflect.get(...args)
      // Check our local values first
      if (localValue !== undefined) return localValue
      // Input nodes default to 20ms delay unless an ancestor/root explicitly
      // configured a different value.
      if (prop === 'delay' && node?.type === 'input') {
        const inheritedDelay = getExplicitInheritedValue(prop)
        return inheritedDelay !== undefined ? inheritedDelay : 20
      }
      // Then check our parent values next
      if (parent) {
        const parentVal = parent.config[prop as string]
        if (parentVal !== undefined) return parentVal
      }
      if (target.rootConfig && typeof prop === 'string') {
        const rootValue = target.rootConfig[prop]
        if (rootValue !== undefined) return rootValue
      }
      // The default delay value should be 20
      if (prop === 'delay' && node?.type === 'input') return 20
      // Finally check the default values
      return defaultConfig[prop as string]
    },
    set(...args) {
      const prop = args[1] as string
      const value = args[2]
      if (prop === '_n') {
        node = value as FormKitNode
        if (target.rootConfig) target.rootConfig._add(node)
        return true
      }
      if (prop === '_rmn') {
        if (target.rootConfig) target.rootConfig._rm(node as FormKitNode)
        node = undefined
        return true
      }