chore: convert rewriter tests to vitest (#32615)

.circleci/src/pipeline/@pipeline.yml

@@ -1784,7 +1784,7 @@ jobs:
                   source ./scripts/ensure-node.sh
                   yarn lerna run types
             - sanitize-verify-and-store-mocha-results:
-                expectedResultCount: 13
+                expectedResultCount: 12
 
   verify-release-readiness:
     <<: *defaults

guides/esm-migration.md

@@ -105,7 +105,7 @@ When migrating some of these projects away from the `ts-node` entry [see `@packa
 - [ ] packages/network
 - [ ] packages/packherd-require
 - [ ] packages/proxy
-- [ ] packages/rewriter
+- [x] packages/rewriter ✅ **COMPLETED**
 - [x] packages/scaffold-config ✅ **COMPLETED**
 - [ ] packages/server
 - [ ] packages/socket

packages/rewriter/__snapshots__/deferred-source-map-cache-spec.ts.js

@@ -1,27 +0,0 @@
-exports['DeferredSourceMapCache #resolve sourcemap generation for JS with no original sourcemap 1'] = {
-  "version": 3,
-  "sources": [
-    "bar (original)"
-  ],
-  "names": [],
-  "mappings": "AAAA,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC",
-  "file": "bar (original).map",
-  "sourceRoot": ".",
-  "sourcesContent": [
-    "console.log()"
-  ]
-}
-
-exports['composed sourcemap'] = {
-  "version": 3,
-  "sources": [
-    "test.coffee"
-  ],
-  "names": [],
-  "mappings": ";AAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;;;EAIA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAW,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;IACT,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA;IAAA,CAAA,CAAA,EAAA,CAAA,CAAA,CAAA;WACA,CAAA,CAAA,EAAA,EAAM,CAAA,CAAA,2DAAG,CAAA,CAAA,CAAA,CAAA,CAAA,SAAU,CAAC,CAAA,CAAA,CAAd,CAAA;EAFG,CAAX,EAGE,CAAA,CAAA,CAAA,CAHF,CAAA",
-  "file": "foo.js (original).map",
-  "sourceRoot": "http://somedomain.net/dir",
-  "sourcesContent": [
-    "# just an example of transpilation w/ sourcemap -\n# `test.coffee` is not directly transpiled/executed by any test code\n# regenerate JS + sourcemap with `coffee -c -m test.coffee`\n\nsetTimeout ->\n  window\n  foo = \"#{window.top.foo}\"\n, 1000\n"
-  ]
-}

packages/rewriter/__snapshots__/js-spec.ts.js

@@ -1,18 +0,0 @@
-exports['js rewriter .rewriteJs source maps emits sourceInfo as expected 1'] = {
-  "url": "http://example.com/foo.js",
-  "js": "window.top"
-}
-
-exports['js rewriter .rewriteJs source maps emits info about existing inline sourcemap 1'] = {
-  "url": "http://example.com/foo.js",
-  "js": "// Generated by CoffeeScript 2.2.1\n(function() {\n  // just an example of transpilation w/ sourcemap -\n  // `test.coffee` is not directly transpiled/executed by any test code\n  // regenerate JS + sourcemap with `coffee -c -m test.coffee`\n  setTimeout(function() {\n    window;\n    var foo;\n    return foo = `${window.top.foo}`;\n  }, 1000);\n\n}).call(this);\n\n//# sourceMappingURL=data:application/json;base64,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"
-}
-
-exports['js rewriter .rewriteJs source maps emits info about existing external sourcemap 1'] = {
-  "url": "http://example.com/foo.js",
-  "js": "// Generated by CoffeeScript 2.2.1\n(function() {\n  // just an example of transpilation w/ sourcemap -\n  // `test.coffee` is not directly transpiled/executed by any test code\n  // regenerate JS + sourcemap with `coffee -c -m test.coffee`\n  setTimeout(function() {\n    window;\n    var foo;\n    return foo = `${window.top.foo}`;\n  }, 1000);\n\n}).call(this);\n\n//# sourceMappingURL=test.js.map\n"
-}
-
-exports['js rewriter .rewriteJs transformations throws an error via the driver if AST visiting throws an error 1'] = `
-window.top.Cypress.utils.throwErrByPath('proxy.js_rewriting_failed', { args: {"errMessage":"foo","errStack":"stack","url":"http://example.com/foo.js"} })
-`

packages/rewriter/package.json

@@ -10,14 +10,13 @@
     "clean": "rimraf --glob 'lib/**/*.js'",
     "clean-deps": "rimraf node_modules",
     "lint": "eslint --ext .js,.jsx,.ts,.tsx,.json, .",
-    "test": "mocha --reporter mocha-multi-reporters --reporter-options configFile=../../mocha-reporter-config.json",
+    "test": "vitest run",
+    "test-debug": "vitest --inspect-brk --no-file-parallelism --test-timeout=0",
     "tslint": "tslint --config ../ts/tslint.json --project ."
   },
   "dependencies": {
     "ast-types": "0.13.3",
     "bluebird": "3.7.2",
-    "chai": "4.2.0",
-    "chai-as-promised": "7.1.1",
     "debug": "^4.3.4",
     "lodash": "^4.17.19",
     "parse5-html-rewriting-stream": "5.1.1",
@@ -27,11 +26,7 @@
     "@cypress/request-promise": "^5.0.0",
     "@types/parse5-html-rewriting-stream": "5.1.1",
     "fs-extra": "9.1.0",
-    "mocha": "3.5.3",
-    "nock": "13.2.9",
-    "sinon": "9.0.2",
-    "sinon-chai": "3.7.0",
-    "snap-shot-it": "7.9.10"
+    "vitest": "^3.2.4"
   },
   "files": [
     "lib"

packages/rewriter/test/mocha.opts

@@ -1,4 +0,0 @@
-test/unit/*
--r @packages/ts/register
---timeout 10000
---recursive

packages/rewriter/test/unit/__snapshots__/deferred-source-map-cache.spec.ts.snap

@@ -0,0 +1,113 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`DeferredSourceMapCache > #resolve > sourcemap generation > composition > with external sourceMappingURL 1`] = `
+{
+  "file": "foo.js (original).map",
+  "mappings": ";AAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;;;EAIA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAW,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;IACT,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA;IAAA,CAAA,CAAA,EAAA,CAAA,CAAA,CAAA;WACA,CAAA,CAAA,EAAA,EAAM,CAAA,CAAA,2DAAG,CAAA,CAAA,CAAA,CAAA,CAAA,SAAU,CAAC,CAAA,CAAA,CAAd,CAAA;EAFG,CAAX,EAGE,CAAA,CAAA,CAAA,CAHF,CAAA",
+  "names": [],
+  "sourceRoot": "http://somedomain.net/dir",
+  "sources": [
+    "test.coffee",
+  ],
+  "sourcesContent": [
+    "# just an example of transpilation w/ sourcemap -
+# \`test.coffee\` is not directly transpiled/executed by any test code
+# regenerate JS + sourcemap with \`coffee -c -m test.coffee\`
+
+setTimeout ->
+  window
+  foo = "#{window.top.foo}"
+, 1000
+",
+  ],
+  "version": 3,
+}
+`;
+
+exports[`DeferredSourceMapCache > #resolve > sourcemap generation > composition > with inlined base64 sourceMappingURL 1`] = `
+{
+  "file": "foo.js (original).map",
+  "mappings": ";AAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;;;EAIA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAW,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;IACT,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA;IAAA,CAAA,CAAA,EAAA,CAAA,CAAA,CAAA;WACA,CAAA,CAAA,EAAA,EAAM,CAAA,CAAA,2DAAG,CAAA,CAAA,CAAA,CAAA,CAAA,SAAU,CAAC,CAAA,CAAA,CAAd,CAAA;EAFG,CAAX,EAGE,CAAA,CAAA,CAAA,CAHF,CAAA",
+  "names": [],
+  "sourceRoot": "http://somedomain.net/dir",
+  "sources": [
+    "test.coffee",
+  ],
+  "sourcesContent": [
+    "# just an example of transpilation w/ sourcemap -
+# \`test.coffee\` is not directly transpiled/executed by any test code
+# regenerate JS + sourcemap with \`coffee -c -m test.coffee\`
+
+setTimeout ->
+  window
+  foo = "#{window.top.foo}"
+, 1000
+",
+  ],
+  "version": 3,
+}
+`;
+
+exports[`DeferredSourceMapCache > #resolve > sourcemap generation > composition > with map referenced by sourcemap header 1`] = `
+{
+  "file": "foo.js (original).map",
+  "mappings": ";AAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;;;EAIA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAW,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;IACT,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA;IAAA,CAAA,CAAA,EAAA,CAAA,CAAA,CAAA;WACA,CAAA,CAAA,EAAA,EAAM,CAAA,CAAA,2DAAG,CAAA,CAAA,CAAA,CAAA,CAAA,SAAU,CAAC,CAAA,CAAA,CAAd,CAAA;EAFG,CAAX,EAGE,CAAA,CAAA,CAAA,CAHF,CAAA",
+  "names": [],
+  "sourceRoot": "http://somedomain.net/dir",
+  "sources": [
+    "test.coffee",
+  ],
+  "sourcesContent": [
+    "# just an example of transpilation w/ sourcemap -
+# \`test.coffee\` is not directly transpiled/executed by any test code
+# regenerate JS + sourcemap with \`coffee -c -m test.coffee\`
+
+setTimeout ->
+  window
+  foo = "#{window.top.foo}"
+, 1000
+",
+  ],
+  "version": 3,
+}
+`;
+
+exports[`DeferredSourceMapCache > #resolve > sourcemap generation > composition > with map referenced by x-sourcemap header 1`] = `
+{
+  "file": "foo.js (original).map",
+  "mappings": ";AAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA,CAAA,EAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;;;EAIA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAW,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA,EAAA;IACT,CAAA,CAAA,CAAA,CAAA,CAAA,CAAA;IAAA,CAAA,CAAA,EAAA,CAAA,CAAA,CAAA;WACA,CAAA,CAAA,EAAA,EAAM,CAAA,CAAA,2DAAG,CAAA,CAAA,CAAA,CAAA,CAAA,SAAU,CAAC,CAAA,CAAA,CAAd,CAAA;EAFG,CAAX,EAGE,CAAA,CAAA,CAAA,CAHF,CAAA",
+  "names": [],
+  "sourceRoot": "http://somedomain.net/dir",
+  "sources": [
+    "test.coffee",
+  ],
+  "sourcesContent": [
+    "# just an example of transpilation w/ sourcemap -
+# \`test.coffee\` is not directly transpiled/executed by any test code
+# regenerate JS + sourcemap with \`coffee -c -m test.coffee\`
+
+setTimeout ->
+  window
+  foo = "#{window.top.foo}"
+, 1000
+",
+  ],
+  "version": 3,
+}
+`;
+
+exports[`DeferredSourceMapCache > #resolve > sourcemap generation > for JS with no original sourcemap 1`] = `
+{
+  "file": "bar (original).map",
+  "mappings": "AAAA,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC",
+  "names": [],
+  "sourceRoot": ".",
+  "sources": [
+    "bar (original)",
+  ],
+  "sourcesContent": [
+    "console.log()",
+  ],
+  "version": 3,
+}
+`;

packages/rewriter/test/unit/__snapshots__/js.spec.ts.snap

@@ -0,0 +1,51 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`js rewriter > .rewriteJs > source maps > emits info about existing external sourcemap 1`] = `
+{
+  "js": "// Generated by CoffeeScript 2.2.1
+(function() {
+  // just an example of transpilation w/ sourcemap -
+  // \`test.coffee\` is not directly transpiled/executed by any test code
+  // regenerate JS + sourcemap with \`coffee -c -m test.coffee\`
+  setTimeout(function() {
+    window;
+    var foo;
+    return foo = \`\${window.top.foo}\`;
+  }, 1000);
+
+}).call(this);
+
+//# sourceMappingURL=test.js.map
+",
+  "url": "http://example.com/foo.js",
+}
+`;
+
+exports[`js rewriter > .rewriteJs > source maps > emits info about existing inline sourcemap 1`] = `
+{
+  "js": "// Generated by CoffeeScript 2.2.1
+(function() {
+  // just an example of transpilation w/ sourcemap -
+  // \`test.coffee\` is not directly transpiled/executed by any test code
+  // regenerate JS + sourcemap with \`coffee -c -m test.coffee\`
+  setTimeout(function() {
+    window;
+    var foo;
+    return foo = \`\${window.top.foo}\`;
+  }, 1000);
+
+}).call(this);
+
+//# sourceMappingURL=data:application/json;base64,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",
+  "url": "http://example.com/foo.js",
+}
+`;
+
+exports[`js rewriter > .rewriteJs > source maps > emits sourceInfo as expected 1`] = `
+{
+  "js": "window.top",
+  "url": "http://example.com/foo.js",
+}
+`;
+
+exports[`js rewriter > .rewriteJs > transformations > throws an error via the driver if AST visiting throws an error 1`] = `"window.top.Cypress.utils.throwErrByPath('proxy.js_rewriting_failed', { args: {"errMessage":"foo","errStack":"stack","url":"http://example.com/foo.js"} })"`;

packages/rewriter/test/unit/deferred-source-map-cache.spec.ts

@@ -1,36 +1,25 @@
+import { describe, expect, it, vi } from 'vitest'
 import { DeferredSourceMapCache } from '../../lib/deferred-source-map-cache'
-import sinon from 'sinon'
-import chai, { expect } from 'chai'
-import chaiAsPromised from 'chai-as-promised'
-import sinonChai from 'sinon-chai'
 import {
   testSourceWithExternalSourceMap,
   testSourceWithInlineSourceMap,
   testSourceMap,
   testSourceWithNoSourceMap,
 } from '../fixtures'
-import snapshot from 'snap-shot-it'
-
-chai.use(chaiAsPromised)
-chai.use(sinonChai)
 
 describe('DeferredSourceMapCache', function () {
   let cache: DeferredSourceMapCache
 
   beforeEach(() => {
-    cache = new DeferredSourceMapCache(sinon.stub())
+    cache = new DeferredSourceMapCache(vi.fn())
   })
 
-  afterEach(() => {
-    sinon.restore()
-  })
-
-  context('#defer', () => {
+  describe('#defer', () => {
     it('adds to requests', () => {
       const request = { uniqueId: 'foo', url: 'bar' }
 
       cache.defer(request)
-      expect(cache.requests).to.deep.eq([request])
+      expect(cache.requests).toEqual([request])
     })
 
     it('replaces existing requests for same URL', () => {
@@ -41,25 +30,25 @@ describe('DeferredSourceMapCache', function () {
       cache.defer(request0)
       cache.defer(request1)
       cache.defer(request2)
-      expect(cache.requests).to.deep.eq([request0, request2])
+      expect(cache.requests).toEqual([request0, request2])
     })
 
     it('throws if uniqueId is duplicated', () => {
       cache.defer({ uniqueId: 'foo', url: 'bar' })
       expect(() => {
         cache.defer({ uniqueId: 'foo', url: 'baz' })
-      }).to.throw
+      }).toThrow()
     })
   })
 
-  context('#resolve', () => {
+  describe('#resolve', () => {
     it('rejects if unknown uniqueId', async () => {
       cache.defer({
         uniqueId: 'baz',
         url: 'quux',
       })
 
-      await expect(cache.resolve('foo', {})).to.be.rejectedWith('Missing request with ID \'foo\'')
+      await expect(cache.resolve('foo', {})).rejects.toThrow('Missing request with ID \'foo\'')
     })
 
     it('rejects if request missing JS', async () => {
@@ -68,10 +57,10 @@ describe('DeferredSourceMapCache', function () {
         url: 'bar',
       })
 
-      await expect(cache.resolve('foo', {})).to.be.rejectedWith(/^Missing JS/)
+      await expect(cache.resolve('foo', {})).rejects.toThrow(/^Missing JS/)
     })
 
-    context('sourcemap generation', () => {
+    describe('sourcemap generation', () => {
       it('for JS with no original sourcemap', async () => {
         cache.defer({
           uniqueId: 'foo',
@@ -80,7 +69,9 @@ describe('DeferredSourceMapCache', function () {
           resHeaders: {},
         })
 
-        snapshot(await cache.resolve('foo', {}))
+        const result = await cache.resolve('foo', {})
+
+        expect(result).toMatchSnapshot()
       })
 
       it('resolves with cached sourceMap on retry', async () => {
@@ -94,10 +85,10 @@ describe('DeferredSourceMapCache', function () {
         const result0 = await cache.resolve('foo', {})
         const result1 = await cache.resolve('foo', {})
 
-        expect(result0).to.eq(result1) // same object reference
+        expect(result0).toEqual(result1) // same object reference
       })
 
-      context('composition', () => {
+      describe('composition', () => {
         const URL = 'http://somedomain.net/dir/foo.js'
 
         const testExternalSourceMap = (js, resHeaders, expectRequest = true) => {
@@ -110,22 +101,24 @@ describe('DeferredSourceMapCache', function () {
             })
 
             // @ts-ignore: https://github.com/bahmutov/snap-shot-it/issues/522
-            snapshot('composed sourcemap', await cache.resolve('foo', {}), { allowSharedSnapshot: true })
+            const result = await cache.resolve('foo', {})
+
+            expect(result).toMatchSnapshot()
 
             if (!expectRequest) {
               return
             }
 
-            expect(cache.requestLib).to.be.calledWith({
+            expect(cache.requestLib).toHaveBeenCalledWith({
               url: 'http://somedomain.net/dir/test.js.map',
               headers: {},
               timeout: 5000,
-            })
+            }, true)
           }
         }
 
         beforeEach(() => {
-          cache.requestLib.resolves({ body: testSourceMap })
+          cache.requestLib.mockResolvedValue({ body: testSourceMap })
         })
 
         it('with inlined base64 sourceMappingURL', testExternalSourceMap(testSourceWithInlineSourceMap, {}, false))

packages/rewriter/test/unit/js.spec.ts

@@ -1,17 +1,27 @@
+import { describe, expect, it, vi, beforeEach } from 'vitest'
 import _ from 'lodash'
-import { expect } from 'chai'
 import { _rewriteJsUnsafe } from '../../lib/js'
 import fse from 'fs-extra'
 import Bluebird from 'bluebird'
 import rp from '@cypress/request-promise'
-import snapshot from 'snap-shot-it'
 import * as astTypes from 'ast-types'
-import sinon from 'sinon'
 import {
   testSourceWithExternalSourceMap,
   testSourceWithInlineSourceMap,
 } from '../fixtures'
 
+vi.mock('ast-types', async (importActual) => {
+  const actual = await importActual<typeof import('ast-types')>()
+
+  return {
+    ...actual,
+    PathVisitor: {
+      ...actual.PathVisitor,
+      fromMethodsObject: vi.fn(),
+    },
+  }
+})
+
 const URL = 'http://example.com/foo.js'
 
 function match (varName, prop) {
@@ -26,17 +36,19 @@ function testExpectedJs (string: string, expected: string) {
   // use _rewriteJsUnsafe so exceptions can cause the test to fail
   const actual = _rewriteJsUnsafe(URL, string)
 
-  expect(actual).to.eq(expected)
+  expect(actual).toEqual(expected)
 }
 
 describe('js rewriter', function () {
-  afterEach(() => {
-    sinon.restore()
+  beforeEach(async () => {
+    const { PathVisitor } = await vi.importActual<typeof import('ast-types')>('ast-types')
+
+    vi.mocked(astTypes.PathVisitor.fromMethodsObject).mockImplementation(PathVisitor.fromMethodsObject)
   })
 
-  context('.rewriteJs', function () {
-    context('transformations', function () {
-      context('injects Cypress window property resolver', () => {
+  describe('.rewriteJs', function () {
+    describe('transformations', function () {
+      describe('injects Cypress window property resolver', () => {
         [
           ['window.top', match('window', 'top')],
           ['window.parent', match('window', 'parent')],
@@ -164,11 +176,13 @@ describe('js rewriter', function () {
 
         err.stack = 'stack'
 
-        sinon.stub(astTypes.PathVisitor, 'fromMethodsObject').throws(err)
+        vi.mocked(astTypes.PathVisitor.fromMethodsObject).mockImplementation(() => {
+          throw err
+        })
 
         const actual = _rewriteJsUnsafe(URL, 'console.log()')
 
-        snapshot(actual)
+        expect(actual).toMatchSnapshot()
       })
 
       it('replaces jira window getter', () => {
@@ -290,9 +304,6 @@ describe('js rewriter', function () {
 
         _.each(libs, (url, lib) => {
           it(`does not corrupt code from '${lib}'`, function () {
-            // may have to download and rewrite large files
-            this.timeout(30000)
-
             const pathToLib = `/tmp/${lib}`
 
             const downloadFile = () => {
@@ -313,36 +324,44 @@ describe('js rewriter', function () {
 
               expect(() => eval(stripped), 'is valid JS').to.not.throw
             })
-          })
+            // may have to download and rewrite large files
+            // hence 30 second timeout
+          }, 30000)
         })
       })
     })
 
-    context('source maps', function () {
-      it('emits sourceInfo as expected', function (done) {
-        _rewriteJsUnsafe(URL, 'window.top', (sourceInfo) => {
-          snapshot(sourceInfo)
-          done()
+    describe('source maps', function () {
+      it('emits sourceInfo as expected', function () {
+        return new Promise<void>((resolve) => {
+          _rewriteJsUnsafe(URL, 'window.top', (sourceInfo) => {
+            expect(sourceInfo).toMatchSnapshot()
+            resolve()
 
-          return ''
+            return ''
+          })
         })
       })
 
-      it('emits info about existing inline sourcemap', function (done) {
-        _rewriteJsUnsafe(URL, testSourceWithInlineSourceMap, (sourceInfo) => {
-          snapshot(sourceInfo)
-          done()
+      it('emits info about existing inline sourcemap', function () {
+        return new Promise<void>((resolve) => {
+          _rewriteJsUnsafe(URL, testSourceWithInlineSourceMap, (sourceInfo) => {
+            expect(sourceInfo).toMatchSnapshot()
+            resolve()
 
-          return ''
+            return ''
+          })
         })
       })
 
-      it('emits info about existing external sourcemap', function (done) {
-        _rewriteJsUnsafe(URL, testSourceWithExternalSourceMap, (sourceInfo) => {
-          snapshot(sourceInfo)
-          done()
+      it('emits info about existing external sourcemap', function () {
+        return new Promise<void>((resolve) => {
+          _rewriteJsUnsafe(URL, testSourceWithExternalSourceMap, (sourceInfo) => {
+            expect(sourceInfo).toMatchSnapshot()
+            resolve()
 
-          return ''
+            return ''
+          })
         })
       })
     })

packages/rewriter/vitest.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    include: ['test/**/*.spec.ts'],
+    globals: true,
+    environment: 'node',
+  },
+})

yarn.lock

@@ -29738,19 +29738,6 @@ sinon@8.1.1:
     nise "^3.0.1"
     supports-color "^7.1.0"
 
-sinon@9.0.2, sinon@^9.0.0:
-  version "9.0.2"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.0.2.tgz#b9017e24633f4b1c98dfb6e784a5f0509f5fd85d"
-  integrity sha512-0uF8Q/QHkizNUmbK3LRFqx5cpTttEVXudywY9Uwzy8bTfZUhljZ7ARzSxnRHWYWtVTeh4Cw+tTb3iU21FQVO9A==
-  dependencies:
-    "@sinonjs/commons" "^1.7.2"
-    "@sinonjs/fake-timers" "^6.0.1"
-    "@sinonjs/formatio" "^5.0.1"
-    "@sinonjs/samsam" "^5.0.3"
-    diff "^4.0.2"
-    nise "^4.0.1"
-    supports-color "^7.1.0"
-
 sinon@^10.0.0:
   version "10.0.0"
   resolved "https://registry.yarnpkg.com/sinon/-/sinon-10.0.0.tgz#52279f97e35646ff73d23207d0307977c9b81430"
@@ -29763,6 +29750,19 @@ sinon@^10.0.0:
     nise "^4.1.0"
     supports-color "^7.1.0"
 
+sinon@^9.0.0:
+  version "9.0.2"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.0.2.tgz#b9017e24633f4b1c98dfb6e784a5f0509f5fd85d"
+  integrity sha512-0uF8Q/QHkizNUmbK3LRFqx5cpTttEVXudywY9Uwzy8bTfZUhljZ7ARzSxnRHWYWtVTeh4Cw+tTb3iU21FQVO9A==
+  dependencies:
+    "@sinonjs/commons" "^1.7.2"
+    "@sinonjs/fake-timers" "^6.0.1"
+    "@sinonjs/formatio" "^5.0.1"
+    "@sinonjs/samsam" "^5.0.3"
+    diff "^4.0.2"
+    nise "^4.0.1"
+    supports-color "^7.1.0"
+
 sirv@^2.0.3, sirv@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/sirv/-/sirv-2.0.4.tgz#5dd9a725c578e34e449f332703eb2a74e46a29b0"