26 lines
1 KiB
JavaScript
26 lines
1 KiB
JavaScript
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// HACK: `ws` has an import map mapping browser context to a dummy implementation that just
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// throws an error, because it's impossible to create a websocket server in the browser
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// and `ws` tries to be helpful. Unfortunately, it doesn't work well in our tests:
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// we run Jest in jsdom context, because we test browser APIs, but this causes Jest
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// to select the browser version of the package, which makes it impossible to run a test
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// websocket server.
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//
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// The solution is to override `ws` exports in the Jest resolver to point to the node version
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// regardless.
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//
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// An additional complication is that Jest seems to expect the resolver to be a CommonJS module,
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// so this module is CommonJS despite the rest of the codebase being ESM.
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//
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// see https://jestjs.io/docs/configuration#resolver-string for docs
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module.exports = function jestResolver(path, options) {
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return options.defaultResolver(path, {
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...options,
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packageFilter: (pkg) => {
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if (path === 'ws') {
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pkg.exports['.']['browser'] = './index.js'
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}
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return pkg
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},
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})
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}
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