Function createDomain

src/effector/createDomain.ts:21–117

(nameOrConfig: any, maybeConfig?: any)

import {flattenConfig} from './config'

export function createDomain(nameOrConfig: any, maybeConfig?: any): Domain {
  const config = flattenConfig({
    or: maybeConfig,
    and: typeof nameOrConfig === 'string' ? {name: nameOrConfig} : nameOrConfig,
  }) as any

  const node = createNode({
    family: {type: DOMAIN},
    regional: true,
    parent: config?.domain || config?.parent,
  })

  const domain = {
    history: {},
    graphite: node,
    hooks: {},
  } as Domain

  node.meta = initUnit(
    DOMAIN,
    domain,
    {
      parent: config?.domain || config?.parent,
      or: {...config, derived: true},
    },
    getUnitTrace(createDomain),
  )

  forIn(
    {
      Event: createEvent,
      Effect: createEffect,
      Store: createStore,
      Domain: createDomain,
    },
    (factory, tag) => {
      const lowerCaseTag = tag.toLowerCase() as
        | 'event'
        | 'effect'
        | 'store'
        | 'domain'

      const onCreateUnit = createNamedEvent(`on${tag}`)
      domain.hooks[lowerCaseTag] = onCreateUnit

      const history = new Set<any>()
      domain.history[`${lowerCaseTag}s`] = history

      onCreateUnit.create = unit => {
        launch(onCreateUnit, unit)
        return unit
      }
      add(
        getGraph(onCreateUnit).seq,
        calc((upd, _, stack) => {
          stack.scope = null
          return upd
        }),