lib/store/src/StoryIndexStore.ts
import dedent from 'ts-dedent';
import { Channel } from '@storybook/addons';
import { StoryId } from '@storybook/csf';
import { StorySpecifier, StoryIndex, StoryIndexEntry } from './types';
export class StoryIndexStore {
channel: Channel;
stories: StoryIndex['stories'];
constructor({ stories }: StoryIndex = { v: 3, stories: {} }) {
this.stories = stories;
}
storyIdFromSpecifier(specifier: StorySpecifier) {
const storyIds = Object.keys(this.stories);
if (specifier === '*') {
// '*' means select the first story. If there is none, we have no selection.
return storyIds[0];
}
if (typeof specifier === 'string') {
// Find the story with the exact id that matches the specifier (see #11571)
if (storyIds.indexOf(specifier) >= 0) {
return specifier;
}
// Fallback to the first story that starts with the specifier
return storyIds.find((storyId) => storyId.startsWith(specifier));
}
// Try and find a story matching the name/kind, setting no selection if they don't exist.
const { name, title } = specifier;
const match = Object.entries(this.stories).find(
([id, story]) => story.name === name && story.title === title
);
return match && match[0];
}
storyIdToEntry(storyId: StoryId): StoryIndexEntry {
const storyEntry = this.stories[storyId];
if (!storyEntry) {
throw new Error(dedent`Couldn't find story matching '${storyId}' after HMR.
- Did you remove it from your CSF file?
- Are you sure a story with that id exists?
- Please check your stories field of your main.js config.
- Also check the browser console and terminal for error messages.`);
}
return storyEntry;
}
}