14463ddd10
This PR updates the Edge Runtime to use a new version that loads dependencies differently. This addresses https://github.com/vercel/next.js/pull/38766 so `instanceof` works as expected. It involved a few code changes, mostly regarding to types. The most important change is that the `Runner` function in the sandbox doesn't take a `ReadableStream` as `body` anymore since this implies creating the instance on "node land" and makes the runtime `fetch` function not to be able to compare with `ReadableStream` using `instanceof`. Instead we introduce a "clonable body" abstraction that allows to create the `ReadableStream` from `Readable` by using the edge runtime primitive which would hold the correct prototype. Also, this PR changes the way we pre-compile the Edge Runtime to adapt it to the new version.
19 lines
698 B
JavaScript
19 lines
698 B
JavaScript
const {
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ReadableStream,
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TransformStream,
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WritableStreamDefaultWriter,
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} = require('next/dist/compiled/@edge-runtime/primitives/streams')
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const OriginWritableStreamWrite = WritableStreamDefaultWriter.prototype.write
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// Override writable stream write method to validate chunk type.
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// Currently CF workers only allow to write the encoded chunk in Uint8Array format.
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WritableStreamDefaultWriter.prototype.write = function (chunk) {
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if (!(chunk instanceof Uint8Array)) {
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throw new Error('Writing non-Uint8Array chunks in a stream is not allowed.')
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}
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return OriginWritableStreamWrite.call(this, chunk)
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}
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global.ReadableStream = ReadableStream
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global.TransformStream = TransformStream
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