67 lines
1.6 KiB
JavaScript
67 lines
1.6 KiB
JavaScript
// Polyfill fetch() in the Node.js environment
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if (!global.fetch) {
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function getFetchImpl() {
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return global.__NEXT_USE_UNDICI
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? require('next/dist/compiled/undici')
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: require('next/dist/compiled/node-fetch')
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}
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function getRequestImpl() {
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const OriginRequest = getFetchImpl().Request
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return class Request extends OriginRequest {
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constructor(input, init) {
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super(input, init)
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this.next = init?.next
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}
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}
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}
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// Due to limitation of global configuration, we have to do this resolution at runtime
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global.fetch = (...args) => {
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const fetchImpl = getFetchImpl()
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if (global.__NEXT_USE_UNDICI) {
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// Undici does not support the `keepAlive` option,
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// instead we have to pass a custom dispatcher
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if (
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!global.__NEXT_HTTP_AGENT_OPTIONS?.keepAlive &&
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!global.__NEXT_UNDICI_AGENT_SET
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) {
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global.__NEXT_UNDICI_AGENT_SET = true
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fetchImpl.setGlobalDispatcher(new fetchImpl.Agent({ pipelining: 0 }))
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}
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return fetchImpl.fetch(...args)
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}
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const agent = ({ protocol }) =>
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protocol === 'http:'
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? global.__NEXT_HTTP_AGENT
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: global.__NEXT_HTTPS_AGENT
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if (!args[1]) {
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args[1] = { agent }
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} else if (!args[1].agent) {
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args[1].agent = agent
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}
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return fetchImpl(...args)
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}
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Object.defineProperties(global, {
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Headers: {
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get() {
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return getFetchImpl().Headers
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},
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},
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Request: {
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get() {
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return getRequestImpl()
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},
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},
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Response: {
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get() {
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return getFetchImpl().Response
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},
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},
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})
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}
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