mswjs/msw v0.30.0

on GitHub

Features

• Supports generators as response resolvers (#720).

rest.get('/polling/:maxCount', function* (req, res, ctx) {
  const { count } = req.params
	let count = 0

	while (count < req.params. maxCount) {
	  yield res(ctx.json({ count }))
	}

	return res(ctx.json({ done: true }))
})

• Adds the ctx.cookie utility to the GraphQL handlers (#763).
• Adds a warning when running MSW on a page that’s outside of the worker’s scope (#787).
• The worker script (mockServiceWorker.js) now contains the library version number to improve its inspection and debugging across releases (#781).

Bug fixes

• Fixes various issues to ensure Jest 27 compatibility.
• Fixes an issue that prevented the assignment of more narrow response types (#735).
• Fixes an issue when parsing a GraphQL-compatible REST API request produced a parsing error during the onUnhandledRequest default behavior (#740).