fafbea8b74
This PR introduces [Edge Runtime](https://edge-runtime.vercel.app/) for emulating [Edge Functions](https://vercel.com/features/edge-functions) locally. Every time you run a [middleware](https://nextjs.org/docs/advanced-features/middleware) locally via `next dev`, an isolated edge runtime context will be created. These contexts have the same constraints as production servers, plus they don't pollute the global scope; Instead, all the code run in a vm on top of a Node.js process. Additionally, `@edge-runtime/jest-environment` has been added to make easier testing Edge Functions in a programmatic way. It dropped the following polyfills from Next.js codebase, since they are now part of Edge Runtime: - abort-controller - formdata - uuid - web-crypto - web-streams Co-authored-by: Gal Schlezinger <2054772+Schniz@users.noreply.github.com>
9 lines
290 B
JavaScript
9 lines
290 B
JavaScript
import Primitives from 'next/dist/compiled/@edge-runtime/primitives'
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// Polyfill Web Streams for the Node.js runtime.
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if (!global.ReadableStream) {
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global.ReadableStream = Primitives.ReadableStream
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}
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if (!global.TransformStream) {
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global.TransformStream = Primitives.TransformStream
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}
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