storybook: Unexpected token delete with addon-actions

I’m using the alpha version.

import { action } from '@storybook/addon-actions';

// ...later, in some story...

action('delete');

This results in the following error:

SyntaxError: Unexpected token delete

      at action (node_modules/@storybook/addon-actions/dist/preview.js:59:42)
      at Object.<anonymous> (web/static/js/sidebar/document.stories.js:19:38)
      at node_modules/@storybook/addon-storyshots/dist/require_context.js:39:24
      at Array.forEach (native)
      at requireModules (node_modules/@storybook/addon-storyshots/dist/require_context.js:34:9)
      at node_modules/@storybook/addon-storyshots/dist/require_context.js:48:7
      at Array.forEach (native)
      at requireModules (node_modules/@storybook/addon-storyshots/dist/require_context.js:34:9)
      at Function.newRequire.context (node_modules/@storybook/addon-storyshots/dist/require_context.js:90:5)
      at evalmachine.<anonymous>:23:21
      at runWithRequireContext (node_modules/@storybook/addon-storyshots/dist/require_context.js:102:3)
      at testStorySnapshots (node_modules/@storybook/addon-storyshots/dist/index.js:94:35)
      at Object.<anonymous> (web/static/js/storyshots.test.js:5:31)

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 21 (13 by maintainers)

Most upvoted comments

Thanks! I have no problem changing this to a non-reserved word, it just took me a while to realize what’s wrong, 😅 I wanted to create this issue so that other users figure this out more easily.

Thanks for all your hard work on Storybook! ❤️ 🍻

silvenon on May 25, 2017

Fixed in 3.2.16

Hypnosphi on Nov 17, 2017

In that case a prefix like _ could be a good middle-ground ? The actions would still appear named in the debug tools (but with an extra prefix) and no crash would occur for names that are forbidden in the function declaration (like delete).

Another solution I can think of is to put the eval in a try/catch and then add the prefix only when necessary, but that gets quite ugly.

gouegd on Jun 3, 2017

Good point @gouegd!

After some hunting, I discovered the rationale: https://github.com/storybooks/storybook-addon-actions/pull/24

tmeasday on Jun 2, 2017