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| // @flow | |
| import { isObject } from './utils' | |
| import assert from 'assert' | |
| export const STATUSES = { | |
| inactive: 'inactive', | |
| open: 'open', | |
| update: 'loading', | |
| loading: 'update', | |
| done: 'resolve', | |
| resolve: 'done', | |
| reject: 'error', | |
| error: 'reject', | |
| cancel: 'cancelled', | |
| cancelled: 'cancel' | |
| } | |
| function isPlainObject(value) { | |
| return !Array.isArray(value) && isObject(value) | |
| } | |
| /** | |
| * Gets any registrations that match a given command and status. | |
| */ | |
| function getRegistration(pool: ?Object, command: Tagged, status: Status) { | |
| let answer = [] | |
| if (pool == null) { | |
| return answer | |
| } | |
| let alias = STATUSES[status] | |
| assert(alias, 'Invalid action status ' + status) | |
| assert( | |
| command.__tagged, | |
| `Unable to register ${command.name || 'action'}(). It has not been tagged.` | |
| ) | |
| let nest = pool[command] | |
| let type = command[status] || '' | |
| /** | |
| * Support nesting, like: | |
| */ | |
| if (isPlainObject(nest)) { | |
| answer = nest[alias] || nest[status] | |
| /** | |
| * Throw in strict mode if a nested registration is undefined. This is usually a typo. | |
| */ | |
| assert( | |
| !(alias in nest) || answer !== undefined, | |
| `The "${alias}" key within a nested registration for ${command.name || | |
| 'an action'} is ${answer}. Is it being referenced correctly?` | |
| ) | |
| assert( | |
| !(status in nest) || answer !== undefined, | |
| `The "${status}" key within a nested registration for ${command.name || | |
| 'an action'} is ${answer}. Is it being referenced correctly?` | |
| ) | |
| } else { | |
| answer = pool[type] | |
| /** | |
| * Similarly, throw in strict mode if a regular registration is undefined. This is usually a typo. | |
| */ | |
| assert( | |
| !(type in pool) || answer !== undefined, | |
| `${command.name || | |
| 'action'} key within a registration is ${answer}. Is it being referenced correctly?` | |
| ) | |
| } | |
| if (answer) { | |
| return Array.isArray(answer) ? answer : [answer] | |
| } | |
| return [] | |
| } | |
| export default getRegistration | |