21 lines
724 B
JavaScript
21 lines
724 B
JavaScript
const test = require('node:test')
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const assert = require('node:assert/strict')
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test('ensurePromiseWithResolvers installs a compatible polyfill when unavailable', async () => {
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const original = Promise.withResolvers
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try {
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Promise.withResolvers = undefined
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const { ensurePromiseWithResolvers } = await import('../src/utils/promiseWithResolvers.ts')
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ensurePromiseWithResolvers()
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assert.equal(typeof Promise.withResolvers, 'function')
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const deferred = Promise.withResolvers()
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assert.equal(typeof deferred.promise?.then, 'function')
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assert.equal(typeof deferred.resolve, 'function')
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assert.equal(typeof deferred.reject, 'function')
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} finally {
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Promise.withResolvers = original
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}
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})
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