1  import { getContext } from 'svelte';
 2  import type { Opt } from '@jet/environment';
 3  import type { ActionOutcome } from '@jet/engine';
 4  
 5  import type { ActionModel } from '~/jet/models';
 6  import type { Jet } from '~/jet/jet';
 7  
 8  export const CONTEXT_NAME = 'jet';
 9  
10  /**
11   * Gets the current Jet instance from the Svelte context.
12   *
13   * @return jet The current instance of Jet
14   */
15  export function getJet(): Jet {
16      const jet = getContext<Opt<Jet>>(CONTEXT_NAME);
17  
18      if (!jet) {
19          throw new Error('getJet called before Jet.load');
20      }
21  
22      return jet;
23  }
24  
25  /**
26   * Jet helper to expose jet.perform in single location
27   *
28   * @return Promise<ActionOutcome>
29   */
30  type ActionUndefined = 'noActionProvided';
31  
32  export function getJetPerform(): (
33      action: ActionModel,
34  ) => Promise<ActionOutcome | ActionUndefined> {
35      const jet = getJet();
36  
37      return (action: ActionModel) => {
38          if (!action) {
39              //TODO: rdar://73165545 (Error Handling Across App)
40              return Promise.resolve('noActionProvided');
41          }
42  
43          return jet.perform(action);
44      };
45  }