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fix(test): support importing from ES modules in spec tests #4136

Merged
merged 1 commit into from
Mar 13, 2023
Merged

fix(test): support importing from ES modules in spec tests #4136

merged 1 commit into from
Mar 13, 2023

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alicewriteswrongs
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@alicewriteswrongs alicewriteswrongs commented Mar 8, 2023 •
edited
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This adds support for importing from ES modules (w/ the .mjs extension) in spec tests by ensuring that

  1. files with such an extension are passed to the jest preprocessor (which then runs them through typescript)
  2. our typescript helper for string-to-strong transpilation will emit .mjs files instead of just dropping them on the floor

Together these changes will allow running specs which import .mjs files.

Pull request checklist

Please check if your PR fulfills the following requirements:

  • Tests for the changes have been added (for bug fixes / features)
  • Docs have been reviewed and added / updated if needed (for bug fixes / features)
  • Build (npm run build) was run locally and any changes were pushed
  • Unit tests (npm test) were run locally and passed
  • E2E Tests (npm run test.karma.prod) were run locally and passed
  • Prettier (npm run prettier) was run locally and passed

Pull request type

Please check the type of change your PR introduces:

  • Bugfix
  • Feature
  • Refactoring (no functional changes, no api changes)
  • Build related changes
  • Documentation content changes
  • Other (please describe):

What is the current behavior?

closes #3251

See that issue for details, but in any Stencil version >2.14.0 spec tests will error if any file imports from an ES module with the .mjs extension.

This just makes a few small tweaks to ensure that such files are properly transpiled and included!

What is the new behavior?

.mjs files should be usable within spec tests.

Does this introduce a breaking change?

  • Yes
  • No

Testing

You could try this out in the reproduction case on the linked issue.

Other information

@alicewriteswrongs alicewriteswrongs requested a review from a team as a code owner March 8, 2023 21:50
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github-actions bot commented Mar 8, 2023

--strictNullChecks error report

Typechecking with --strictNullChecks resulted in 2100 errors on this branch.

That's the same number of errors on main, so at least we're not creating new ones!

reports and statistics

Our most error-prone files
Path Error Count
src/compiler/config/test/validate-dev-server.spec.ts 49
src/compiler/config/test/validate-output-www.spec.ts 40
src/screenshot/connector-base.ts 40
src/dev-server/index.ts 38
src/mock-doc/serialize-node.ts 36
src/compiler/sys/tests/in-memory-fs.spec.ts 34
src/screenshot/screenshot-compare.ts 33
src/compiler/transformers/test/parse-props.spec.ts 32
src/dev-server/server-process.ts 32
src/runtime/vdom/vdom-render.ts 31
src/compiler/sys/typescript/typescript-config.ts 28
src/compiler/build/build-stats.ts 27
src/compiler/output-targets/dist-lazy/generate-lazy-module.ts 26
src/compiler/prerender/prerender-main.ts 25
src/sys/node/test/worker-manager.spec.ts 24
src/compiler/style/test/optimize-css.spec.ts 23
src/runtime/update-component.ts 23
src/testing/puppeteer/puppeteer-element.ts 23
src/compiler/config/test/validate-paths.spec.ts 22
src/utils/test/message-utils.spec.ts 21
Our most common errors
Typescript Error Code Count Error messages
TS2345 596
Error messages Argument of type 'CompilerSystem | undefined' is not assignable to parameter of type 'CompilerSystem'.
Type 'undefined' is not assignable to type 'CompilerSystem'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'Promise<(() => void) | null>' is not assignable to parameter of type 'Promise<() => void>'.

Argument of type 'null' is not assignable to parameter of type 'BuildResultsComponentGraph'.

Argument of type 'DevServerConfig | undefined' is not assignable to parameter of type 'StencilDevServerConfig'.
Type 'undefined' is not assignable to type 'StencilDevServerConfig'.

Argument of type 'Promise<(() => void) | null>' is not assignable to parameter of type 'Promise<() => void>'.
Type '(() => void) | null' is not assignable to type '() => void'.
Type 'null' is not assignable to type '() => void'.

Argument of type 'ComponentRuntimeHostListener[] | undefined' is not assignable to parameter of type 'ComponentRuntimeHostListener[]'.
Type 'undefined' is not assignable to type 'ComponentRuntimeHostListener[]'.

Argument of type 'HTMLScriptElement | null | undefined' is not assignable to parameter of type 'HTMLScriptElement'.
Type 'undefined' is not assignable to type 'HTMLScriptElement'.

Argument of type 'string | null' is not assignable to parameter of type 'string'.
Type 'null' is not assignable to type 'string'.

Argument of type 'Logger | undefined' is not assignable to parameter of type 'Logger'.
Type 'undefined' is not assignable to type 'Logger'.

Argument of type 'string[] | undefined' is not assignable to parameter of type 'string[]'.
Type 'undefined' is not assignable to type 'string[]'.

Argument of type 'string' is not assignable to parameter of type 'never'.

Argument of type 'Diagnostic[] | undefined' is not assignable to parameter of type 'readonly Diagnostic[]'.
Type 'undefined' is not assignable to type 'readonly Diagnostic[]'.

Argument of type 'boolean | undefined' is not assignable to parameter of type 'boolean'.

Argument of type 'BuildConditionals | undefined' is not assignable to parameter of type 'BuildConditionals'.
Type 'undefined' is not assignable to type 'BuildConditionals'.

Argument of type 'Diagnostic[] | undefined' is not assignable to parameter of type 'Diagnostic[]'.
Type 'undefined' is not assignable to type 'Diagnostic[]'.

Argument of type '{ styleText: string; output: string; map: null; diagnostics: never[]; imports: never[]; defaultVarName: string; styleDocs: never[]; }' is not assignable to parameter of type 'never'.

Argument of type 'WorkerMeta | undefined' is not assignable to parameter of type 'WorkerMeta'.
Type 'undefined' is not assignable to type 'WorkerMeta'.

Argument of type 'string | null | undefined' is not assignable to parameter of type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'Set<string | null>' is not assignable to parameter of type 'Set'.
Type 'string | null' is not assignable to type 'string'.
Type 'null' is not assignable to type 'string'.

Argument of type 'Set<string | null>' is not assignable to parameter of type 'Set'.

Argument of type 'RollupConfig | undefined' is not assignable to parameter of type 'RollupConfig'.
Type 'undefined' is not assignable to type 'RollupConfig'.

Argument of type '(string[] | undefined)[]' is not assignable to parameter of type 'string[][]'.
Type 'string[] | undefined' is not assignable to type 'string[]'.
Type 'undefined' is not assignable to type 'string[]'.

Argument of type 'ComponentCompilerMeta | undefined' is not assignable to parameter of type 'ComponentCompilerMeta'.
Type 'undefined' is not assignable to type 'ComponentCompilerMeta'.

Argument of type 'true | Object | undefined' is not assignable to parameter of type 'boolean | Object | null'.
Type 'undefined' is not assignable to type 'boolean | Object | null'.

Argument of type 'SourceTarget | undefined' is not assignable to parameter of type 'SourceTarget'.
Type 'undefined' is not assignable to type 'SourceTarget'.

Argument of type 'boolean | undefined' is not assignable to parameter of type 'boolean'.
Type 'undefined' is not assignable to type 'boolean'.

Argument of type '(string | undefined)[]' is not assignable to parameter of type 'string[]'.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type '(string | undefined)[]' is not assignable to parameter of type 'string[]'.

Argument of type 'RollupSourceMap | undefined' is not assignable to parameter of type 'SourceMap'.
Type 'undefined' is not assignable to type 'SourceMap'.

Argument of type 'EntryModule | undefined' is not assignable to parameter of type 'EntryModule'.
Type 'undefined' is not assignable to type 'EntryModule'.

Argument of type '(Module | undefined)[]' is not assignable to parameter of type 'Module[]'.
Type 'Module | undefined' is not assignable to type 'Module'.
Type 'undefined' is not assignable to type 'Module'.

Argument of type 'Document | null' is not assignable to parameter of type 'Document'.
Type 'null' is not assignable to type 'Document'.

Argument of type 'Document | null' is not assignable to parameter of type 'Node | MockNode'.
Type 'null' is not assignable to type 'Node | MockNode'.

Argument of type 'HydrateAnchorElement' is not assignable to parameter of type '{ [attrName: string]: string; }'.
'string' index signatures are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'URL | null' is not assignable to parameter of type 'URL'.
Type 'null' is not assignable to type 'URL'.

Argument of type 'number | undefined' is not assignable to parameter of type 'number'.
Type 'undefined' is not assignable to type 'number'.

Argument of type 'SitemapXmpResults | null' is not assignable to parameter of type 'SitemapXmpResults'.
Type 'null' is not assignable to type 'SitemapXmpResults'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string | URL'.

Argument of type 'Map<string, string[]> | undefined' is not assignable to parameter of type 'Map<string, string[]>'.
Type 'undefined' is not assignable to type 'Map<string, string[]>'.

Argument of type 'undefined' is not assignable to parameter of type 'string'.

Argument of type 'ServiceWorkerConfig | undefined' is not assignable to parameter of type 'ServiceWorkerConfig'.
Type 'undefined' is not assignable to type 'ServiceWorkerConfig'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string | URL'.
Type 'undefined' is not assignable to type 'string | URL'.

Argument of type 'CssNode[] | null | undefined' is not assignable to parameter of type 'void | CssNode[]'.

Argument of type 'CssNode[] | null | undefined' is not assignable to parameter of type 'void | CssNode[]'.
Type 'null' is not assignable to type 'void | CssNode[]'.

Argument of type 'null' is not assignable to parameter of type 'string'.

Argument of type 'CompilerSystemCreateDirectoryOptions | undefined' is not assignable to parameter of type 'CompilerSystemCreateDirectoryOptions'.
Type 'undefined' is not assignable to type 'CompilerSystemCreateDirectoryOptions'.

Argument of type 'null' is not assignable to parameter of type 'CompilerFileWatcherEvent'.

Argument of type 'null' is not assignable to parameter of type '{ access: (filePath: string) => Promise; accessSync: (filePath: string) => boolean; cancelDeleteDirectoriesFromDisk: (dirPaths: string[]) => void; cancelDeleteFilesFromDisk: (filePaths: string[]) => void; ... 17 more ...; writeFiles: (files: { ...; } | Map<...>, opts?: FsWriteOptions | undefined) => Promise...'.

Argument of type 'undefined' is not assignable to parameter of type 'TypeChecker'.

Argument of type 'CollectionBundleManifest[] | undefined' is not assignable to parameter of type 'any[]'.
Type 'undefined' is not assignable to type 'any[]'.

Argument of type 'Module | undefined' is not assignable to parameter of type 'Module'.
Type 'undefined' is not assignable to type 'Module'.

Argument of type 'NodeArray | undefined' is not assignable to parameter of type 'NodeArray | HeritageClause[]'.
Type 'undefined' is not assignable to type 'NodeArray | HeritageClause[]'.

Argument of type 'Block | undefined' is not assignable to parameter of type 'Block'.
Type 'undefined' is not assignable to type 'Block'.

Argument of type 'Expression | undefined' is not assignable to parameter of type 'Expression'.
Type 'undefined' is not assignable to type 'Expression'.

Argument of type 'Symbol | undefined' is not assignable to parameter of type 'Symbol'.
Type 'undefined' is not assignable to type 'Symbol'.

Argument of type 'TypeNode | undefined' is not assignable to parameter of type 'Node'.
Type 'undefined' is not assignable to type 'Node'.

Argument of type '(PropertyAssignment | null)[]' is not assignable to parameter of type 'readonly ObjectLiteralElementLike[]'.
Type 'PropertyAssignment | null' is not assignable to type 'ObjectLiteralElementLike'.
Type 'null' is not assignable to type 'ObjectLiteralElementLike'.

Argument of type 'Signature | undefined' is not assignable to parameter of type 'Signature'.
Type 'undefined' is not assignable to type 'Signature'.

Argument of type 'Identifier | undefined' is not assignable to parameter of type 'Node'.
Type 'undefined' is not assignable to type 'Node'.

Argument of type 'ScriptTarget | undefined' is not assignable to parameter of type 'ScriptTarget | CreateSourceFileOptions'.

Argument of type 'Config | null | undefined' is not assignable to parameter of type 'Config'.
Type 'undefined' is not assignable to type 'Config'.

Argument of type 'null' is not assignable to parameter of type 'CollectionCompilerMeta'.

Argument of type 'PropertyName | undefined' is not assignable to parameter of type 'PropertyName'.
Type 'undefined' is not assignable to type 'PropertyName'.

Argument of type 'NamedExportBindings | undefined' is not assignable to parameter of type 'Node'.
Type 'undefined' is not assignable to type 'Node'.

Argument of type 'Declaration | undefined' is not assignable to parameter of type 'Node'.
Type 'undefined' is not assignable to type 'Node'.

Argument of type 'Identifier | undefined' is not assignable to parameter of type 'string | BindingName'.
Type 'undefined' is not assignable to type 'string | BindingName'.

Argument of type 'ScriptTarget | undefined' is not assignable to parameter of type 'ScriptTarget | CreateSourceFileOptions'.
Type 'undefined' is not assignable to type 'ScriptTarget | CreateSourceFileOptions'.

Argument of type 'Diagnostic' is not assignable to parameter of type 'DiagnosticWithLocation'.
Types of property 'file' are incompatible.
Type 'SourceFile | undefined' is not assignable to type 'SourceFile'.
Type 'undefined' is not assignable to type 'SourceFile'.

Argument of type '(...pathSegments: string[]) => string | undefined' is not assignable to parameter of type '(...args: string[]) => string'.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'OpenInEditorCallback | undefined' is not assignable to parameter of type 'OpenInEditorCallback'.
Type 'undefined' is not assignable to type 'OpenInEditorCallback'.

Argument of type 'CompilerWatcher | undefined' is not assignable to parameter of type 'CompilerWatcher'.
Type 'undefined' is not assignable to type 'CompilerWatcher'.

Argument of type '{ editor: string | undefined; }' is not assignable to parameter of type 'OpenInEditorOptions'.
Types of property 'editor' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'string | undefined' is not assignable to parameter of type 'PathLike'.

Argument of type 'DevServerConfig | undefined' is not assignable to parameter of type 'DevServerConfig'.
Type 'undefined' is not assignable to type 'DevServerConfig'.

Argument of type 'CompilerBuildResults | undefined' is not assignable to parameter of type 'CompilerBuildResults'.
Type 'undefined' is not assignable to type 'CompilerBuildResults'.

Argument of type 'Window | undefined' is not assignable to parameter of type 'Window'.
Type 'undefined' is not assignable to type 'Window'.

Argument of type 'SerializeDocumentOptions | undefined' is not assignable to parameter of type 'HydrateDocumentOptions'.
Type 'undefined' is not assignable to type 'HydrateDocumentOptions'.

Argument of type 'HydrateDocumentOptions | undefined' is not assignable to parameter of type 'HydrateDocumentOptions'.
Type 'undefined' is not assignable to type 'HydrateDocumentOptions'.

Argument of type 'MockNode | null' is not assignable to parameter of type 'MockNode'.
Type 'null' is not assignable to type 'MockNode'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string | null'.
Type 'undefined' is not assignable to type 'string | null'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string | null'.

Argument of type 'ShadowRoot | null' is not assignable to parameter of type 'Node'.
Type 'null' is not assignable to type 'Node'.

Argument of type 'MockElement' is not assignable to parameter of type 'MockHTMLElement'.
Types of property 'namespaceURI' are incompatible.
Type 'string | null' is not assignable to type 'string'.
Type 'null' is not assignable to type 'string'.

Argument of type 'null' is not assignable to parameter of type 'string | Node'.

Argument of type 'null' is not assignable to parameter of type 'string | boolean | undefined'.

Argument of type '(Window & typeof globalThis) | null' is not assignable to parameter of type 'Window'.
Type 'null' is not assignable to type 'Window'.

Argument of type 'string | null | undefined' is not assignable to parameter of type 'string | undefined'.

Argument of type 'HostRef | undefined' is not assignable to parameter of type 'HostRef'.
Type 'undefined' is not assignable to type 'HostRef'.

Argument of type 'this' is not assignable to parameter of type 'HostElement'.
Type 'HostElement' is not assignable to type 'import("/home/runner/work/stencil/stencil/src/declarations/stencil-private").HostElement'.
The types returned by 'componentOnReady()' are incompatible between these types.
Type 'Promise | undefined' is not assignable to type 'Promise'.
Type 'undefined' is not assignable to type 'Promise'.

Argument of type 'this' is not assignable to parameter of type 'HostElement'.

Argument of type 'string | null' is not assignable to parameter of type 'string | undefined'.

Argument of type 'PropertyDescriptor | undefined' is not assignable to parameter of type 'PropertyDescriptor & ThisType'.
Type 'undefined' is not assignable to type 'PropertyDescriptor & ThisType'.
Type 'undefined' is not assignable to type 'PropertyDescriptor'.

Argument of type 'HTMLElement | undefined' is not assignable to parameter of type 'HTMLElement'.
Type 'undefined' is not assignable to type 'HTMLElement'.

Argument of type 'HostElement | undefined' is not assignable to parameter of type 'HostElement'.
Type 'undefined' is not assignable to type 'HostElement'.

Argument of type 'HostElement | undefined' is not assignable to parameter of type 'EventTarget'.
Type 'undefined' is not assignable to type 'EventTarget'.

Argument of type 'HostElement | undefined' is not assignable to parameter of type 'Element'.
Type 'undefined' is not assignable to type 'Element'.

Argument of type 'VNode[] | undefined' is not assignable to parameter of type 'VNode[]'.
Type 'undefined' is not assignable to type 'VNode[]'.

Argument of type 'null | undefined' is not assignable to parameter of type 'ChildType'.
Type 'undefined' is not assignable to type 'ChildType'.

Argument of type 'VNode | null' is not assignable to parameter of type 'ChildType'.
Type 'null' is not assignable to type 'ChildType'.

Argument of type 'VNode | undefined' is not assignable to parameter of type 'ChildType'.
Type 'undefined' is not assignable to type 'ChildType'.

Argument of type 'VNode | null | undefined' is not assignable to parameter of type 'ChildType'.
Type 'undefined' is not assignable to type 'ChildType'.

Argument of type 'null | undefined' is not assignable to parameter of type 'ChildType'.

Argument of type 'RenderNode | undefined' is not assignable to parameter of type 'Node | null'.
Type 'undefined' is not assignable to type 'Node | null'.

Argument of type 'VNode | undefined' is not assignable to parameter of type 'VNode'.
Type 'undefined' is not assignable to type 'VNode'.

Argument of type 'null' is not assignable to parameter of type 'VNode'.

Argument of type 'RenderNode | undefined' is not assignable to parameter of type 'Node'.
Type 'undefined' is not assignable to type 'Node'.

Argument of type 'null' is not assignable to parameter of type 'RenderNode'.

Argument of type 'ScreenshotDiff | undefined' is not assignable to parameter of type 'ScreenshotDiff'.
Type 'undefined' is not assignable to type 'ScreenshotDiff'.

Argument of type 'string | undefined' is not assignable to parameter of type 'PathLike'.
Type 'undefined' is not assignable to type 'PathLike'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string | SemVer'.
Type 'undefined' is not assignable to type 'string | SemVer'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string | SemVer'.

Argument of type 'null' is not assignable to parameter of type 'number | undefined'.

Argument of type 'null' is not assignable to parameter of type 'number | PromiseLike'.

Argument of type 'CompilerWorkerTask | undefined' is not assignable to parameter of type 'CompilerWorkerTask'.
Type 'undefined' is not assignable to type 'CompilerWorkerTask'.

Argument of type 'null' is not assignable to parameter of type 'CompilerWorkerTask'.

Argument of type 'undefined' is not assignable to parameter of type 'ErrorHandler'.

Argument of type 'string | undefined' is not assignable to parameter of type 'MockRequestInfo'.
Type 'undefined' is not assignable to type 'MockRequestInfo'.

Argument of type 'string | undefined' is not assignable to parameter of type 'MockRequestInfo'.

Argument of type 'MockResponse | undefined' is not assignable to parameter of type 'MockResponse'.
Type 'undefined' is not assignable to type 'MockResponse'.

Argument of type 'RuntimeRef | undefined' is not assignable to parameter of type 'RuntimeRef'.
Type 'undefined' is not assignable to type 'RuntimeRef'.

Argument of type 'this' is not assignable to parameter of type 'E2EElementInternal'.
Type 'E2EElement' is not assignable to type 'E2EElementInternal'.
Types of property 'find' are incompatible.
Type '(selector: string) => Promise<E2EElement | null>' is not assignable to type '(selector: FindSelector) => Promise'.

Argument of type '(elm: Element, pseudoElt: string) => any' is not assignable to parameter of type 'string | EvaluateFunc<[ElementHandle, string | null | undefined]>'.
Type '(elm: Element, pseudoElt: string) => any' is not assignable to type 'EvaluateFunc<[ElementHandle, string | null | undefined]>'.
Types of parameters 'pseudoElt' and 'params_1' are incompatible.
Type 'string | null | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'this' is not assignable to parameter of type 'E2EElementInternal'.

Argument of type '{ viewport: EmulateViewport | undefined; userAgent: string | undefined; }' is not assignable to parameter of type 'Device'.
Types of property 'userAgent' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Argument of type 'null' is not assignable to parameter of type 'SourceMap | undefined'.

Argument of type '{ tags: never[]; text: string; } | null | undefined' is not assignable to parameter of type 'CompilerJsDoc | undefined'.
Type 'null' is not assignable to type 'CompilerJsDoc | undefined'.
TS18048 575
Error messages 'config.sys' is possibly 'undefined'.

'sys.details' is possibly 'undefined'.

'details' is possibly 'undefined'.

'config.devServer' is possibly 'undefined'.

'config.sys.getDevServerExecutingPath' is possibly 'undefined'.

'config.sys.lazyRequire' is possibly 'undefined'.

'sys.parseYarnLockFile' is possibly 'undefined'.

'scope.styleEl' is possibly 'undefined'.

'moduleFile' is possibly 'undefined'.

'config.extras' is possibly 'undefined'.

'config.logger' is possibly 'undefined'.

'hmr' is possibly 'undefined'.

'config.outputTargets' is possibly 'undefined'.

'c.moduleFiles' is possibly 'undefined'.

'a.name' is possibly 'undefined'.

'b.name' is possibly 'undefined'.

'orgNodeResolveId' is possibly 'undefined'.

'config.rollupPlugins' is possibly 'undefined'.

'config.rollupConfig' is possibly 'undefined'.

'config.rollupConfig.inputOptions' is possibly 'undefined'.

'compilerCtx.worker' is possibly 'undefined'.

'pluginTransforms.dependencies' is possibly 'undefined'.

'lastModified' is possibly 'undefined'.

'config.devServer.historyApiFallback' is possibly 'undefined'.

'inputConfig.devServer' is possibly 'undefined'.

'inputConfig.flags' is possibly 'undefined'.

'userConfig.flags' is possibly 'undefined'.

'www' is possibly 'undefined'.

'outputTarget' is possibly 'undefined'.

'o' is possibly 'undefined'.

'cmp' is possibly 'undefined'.

'deps' is possibly 'undefined'.

'cmp.directDependents' is possibly 'undefined'.

'cmp.dependents' is possibly 'undefined'.

'config.bundles' is possibly 'undefined'.

'c.dependencies' is possibly 'undefined'.

'c.directDependencies' is possibly 'undefined'.

'outputTargets' is possibly 'undefined'.

'opts' is possibly 'undefined'.

'errorLine.text' is possibly 'undefined'.

'errorLine.errorLength' is possibly 'undefined'.

'opts.format' is possibly 'undefined'.

'entryModule' is possibly 'undefined'.

'a.directDependents' is possibly 'undefined'.

'b.directDependents' is possibly 'undefined'.

'a.directDependencies' is possibly 'undefined'.

'b.directDependencies' is possibly 'undefined'.

'a.dependents' is possibly 'undefined'.

'b.dependents' is possibly 'undefined'.

'a.dependencies' is possibly 'undefined'.

'b.dependencies' is possibly 'undefined'.

'bundleOptions.loader' is possibly 'undefined'.

'pluginCtx.config.plugins' is possibly 'undefined'.

'transformResults.id' is possibly 'undefined'.

'transformResults.dependencies' is possibly 'undefined'.

'transformResults.diagnostics' is possibly 'undefined'.

'config.maxConcurrentWorkers' is possibly 'undefined'.

'hydrateOpts.staticComponents' is possibly 'undefined'.

'sys.generateFileHash' is possibly 'undefined'.

'manager.config.logger' is possibly 'undefined'.

'manager.config.sys' is possibly 'undefined'.

'serviceWorker' is possibly 'undefined'.

'node.comment' is possibly 'undefined'.

'node.selectors' is possibly 'undefined'.

'node.values' is possibly 'undefined'.

'moduleId' is possibly 'undefined'.

'sys' is possibly 'undefined'.

'tsResults.diagnostics' is possibly 'undefined'.

'r.resolvedModule' is possibly 'undefined'.

'results' is possibly 'undefined'.

'compilerSystem.watchDirectory' is possibly 'undefined'.

'compilerSystem.watchFile' is possibly 'undefined'.

'collectionManifest.bundles' is possibly 'undefined'.

'cstrMethod.body' is possibly 'undefined'.

'cmp.dependencies' is possibly 'undefined'.

'foundDep' is possibly 'undefined'.

'connectedCallback.body' is possibly 'undefined'.

'cmpNode.name' is possibly 'undefined'.

'symbol.declarations' is possibly 'undefined'.

'signature' is possibly 'undefined'.

'collection.moduleFiles' is possibly 'undefined'.

'tsSourceFiles' is possibly 'undefined'.

'results.data' is possibly 'undefined'.

'results.imports' is possibly 'undefined'.

'transformers.before' is possibly 'undefined'.

'transformers.afterDeclarations' is possibly 'undefined'.

'transformers.after' is possibly 'undefined'.

'msg.requestLog' is possibly 'undefined'.

'msg.error' is possibly 'undefined'.

'msg.buildResults' is possibly 'undefined'.

'a.priority' is possibly 'undefined'.

'b.priority' is possibly 'undefined'.

'devServerConfig.historyApiFallback' is possibly 'undefined'.

'devServerConfig.basePath' is possibly 'undefined'.

'req.pathname' is possibly 'undefined'.

'req.stats' is possibly 'undefined'.

'devServerConfig' is possibly 'undefined'.

'res.$content' is possibly 'undefined'.

'opts.maxHydrateCount' is possibly 'undefined'.

'ref' is possibly 'undefined'.

'opts.excludeComponents' is possibly 'undefined'.

'hostRef' is possibly 'undefined'.

'hostRef.$instanceValues$' is possibly 'undefined'.

'ref.$onInstancePromise$' is possibly 'undefined'.

'ref.$lazyInstance$' is possibly 'undefined'.

'opts.indentSpaces' is possibly 'undefined'.

'opts.approximateLineWidth' is possibly 'undefined'.

'plt.$orgLocNodes$' is possibly 'undefined'.

'hostRef.$lazyInstance$' is possibly 'undefined'.

'cmpMeta.$attrsToReflect$' is possibly 'undefined'.

'cmpMeta.$members$' is possibly 'undefined'.

'elm' is possibly 'undefined'.

'hostRef.$renderCount$' is possibly 'undefined'.

'childrenPromises' is possibly 'undefined'.

'hostRef.$hostElement$' is possibly 'undefined'.

'nodeRef' is possibly 'undefined'.

'hostElm' is possibly 'undefined'.

'screenshot.diff' is possibly 'undefined'.

'screenshotCache.items' is possibly 'undefined'.

'a.width' is possibly 'undefined'.

'b.width' is possibly 'undefined'.

'a.height' is possibly 'undefined'.

'b.height' is possibly 'undefined'.

'a.id' is possibly 'undefined'.

'b.id' is possibly 'undefined'.

'emulateConfig.viewport' is possibly 'undefined'.

'emulateConfig.viewport.deviceScaleFactor' is possibly 'undefined'.

'res.statusCode' is possibly 'undefined'.

'tsSysWatchDirectory' is possibly 'undefined'.

'tsSysWatchFile' is possibly 'undefined'.

'sys.events' is possibly 'undefined'.

't.retries' is possibly 'undefined'.

'testing.emulate' is possibly 'undefined'.

'parsedConfig.collectCoverageFrom' is possibly 'undefined'.

'compare.width' is possibly 'undefined'.

'compare.deviceScaleFactor' is possibly 'undefined'.

'compare.height' is possibly 'undefined'.

'config' is possibly 'undefined'.

'screenshotEmulate.viewport' is possibly 'undefined'.

'd.absFilePath' is possibly 'undefined'.

'd.code' is possibly 'undefined'.
TS2322 506
Error messages Type 'string | null | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'null' is not assignable to type 'DevServerConfig | undefined'.

Type 'boolean | null | undefined' is not assignable to type 'boolean | undefined'.
Type 'null' is not assignable to type 'boolean | undefined'.

Type 'null' is not assignable to type 'DevServer'.

Type 'undefined' is not assignable to type 'ComponentConstructor | Promise'.

Type 'HTMLElement | null' is not assignable to type 'HTMLElement'.
Type 'null' is not assignable to type 'HTMLElement'.

Type '({ type: "chunk"; fileName: string; map: SourceMap | undefined; code: string; moduleFormat: ModuleFormat | undefined; entryKey: string; imports: string[]; isEntry: boolean; ... 4 more ...; content?: undefined; } | { ...; })[]' is not assignable to type 'RollupResult[]'.
Type '{ type: "chunk"; fileName: string; map: SourceMap | undefined; code: string; moduleFormat: ModuleFormat | undefined; entryKey: string; imports: string[]; isEntry: boolean; ... 4 more ...; content?: undefined; } | { ...; }' is not assignable to type 'RollupResult'.
Type '{ type: "chunk"; fileName: string; map: SourceMap | undefined; code: string; moduleFormat: ModuleFormat | undefined; entryKey: string; imports: string[]; isEntry: boolean; ... 4 more ...; content?: undefined; }' is not assignable to type 'RollupResult'.
Type '{ type: "chunk"; fileName: string; map: SourceMap | undefined; code: string; moduleFormat: ModuleFormat | undefined; entryKey: string; imports: string[]; isEntry: boolean; ... 4 more ...; content?: undefined; }' is not assignable to type 'RollupChunkResult'.
Types of property 'moduleFormat' are incompatible.
Type 'ModuleFormat | undefined' is not assignable to type 'ModuleFormat'.
Type 'undefined' is not assignable to type 'ModuleFormat'.

Type 'null' is not assignable to type 'CompilerBuildResults'.

Type 'undefined' is not assignable to type 'string'.

Type 'null' is not assignable to type 'string'.

Type 'undefined' is not assignable to type 'Document'.

Type 'null' is not assignable to type 'Promise'.

Type 'null' is not assignable to type 'LoggerTimeSpan'.

Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'boolean | undefined' is not assignable to type 'boolean'.

Type 'number | undefined' is not assignable to type 'number'.
Type 'undefined' is not assignable to type 'number'.

Type 'boolean | "prod" | undefined' is not assignable to type 'boolean | "prod"'.
Type 'undefined' is not assignable to type 'boolean | "prod"'.

Type 'BuildResultsComponentGraph | undefined' is not assignable to type 'BuildResultsComponentGraph'.
Type 'undefined' is not assignable to type 'BuildResultsComponentGraph'.

Type 'RollupResults | undefined' is not assignable to type 'RollupResults'.
Type 'undefined' is not assignable to type 'RollupResults'.

Type '{ name: string | undefined; source: string; tags: any[]; }[]' is not assignable to type '{ name: string; source: string; tags: string[]; }[]'.
Type '{ name: string | undefined; source: string; tags: any[]; }' is not assignable to type '{ name: string; source: string; tags: string[]; }'.
Types of property 'name' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'null' is not assignable to type 'CompilerWorkerContext'.

Type 'null' is not assignable to type 'WatchOfConfigFile'.

Type 'null' is not assignable to type 'Promise<(void | void[])[]>'.

Type 'Promise<(void | void[] | null)[]>' is not assignable to type 'Promise<(void | void[])[]>'.
Type '(void | void[] | null)[]' is not assignable to type '(void | void[])[]'.
Type 'void | void[] | null' is not assignable to type 'void | void[]'.
Type 'null' is not assignable to type 'void | void[]'.

Type 'null' is not assignable to type '{ program: WatchOfConfigFile; rebuild: () => void; }'.

Type '(this: PluginContext, importee: string, importer: string) => Promise' is not assignable to type 'ResolveIdHook'.
Types of parameters 'importer' and 'importer' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type '(this: PluginContext, importee: string, importer: string) => Promise' is not assignable to type 'ResolveIdHook'.
Types of parameters 'importer' and 'importer' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'string | null' is not assignable to type 'string'.
Type 'null' is not assignable to type 'string'.

Type 'null' is not assignable to type 'string | undefined'.

Type '{ code: string; exports: string[]; workerMsgId: string; dependencies: string[]; } | null' is not assignable to type 'WorkerMeta | undefined'.
Type 'null' is not assignable to type 'WorkerMeta | undefined'.

Type 'WorkerMeta | undefined' is not assignable to type 'WorkerMeta'.
Type 'undefined' is not assignable to type 'WorkerMeta'.

Type 'CompilerSystem | undefined' is not assignable to type 'CompilerSystem'.
Type 'undefined' is not assignable to type 'CompilerSystem'.

Type 'Logger | undefined' is not assignable to type 'Logger'.
Type 'undefined' is not assignable to type 'Logger'.

Type 'import("/home/runner/work/stencil/stencil/src/compiler/cache").Cache' is not assignable to type 'import("/home/runner/work/stencil/stencil/src/declarations/stencil-private").Cache'.
The types returned by 'get(...)' are incompatible between these types.
Type 'Promise<string | null>' is not assignable to type 'Promise'.

Type 'null' is not assignable to type 'ValidatedConfig'.
Type 'null' is not assignable to type 'Config'.

Type 'null' is not assignable to type 'string[]'.

Type '{ dir: string; buildDir: string; collectionDir: string | null; typesDir: string; esmLoaderPath: string; copy: d.CopyTask[]; polyfills: boolean | undefined; empty: boolean; transformAliasedImportPathsInCollection: boolean; type: "dist"; }' is not assignable to type 'Required'.
Types of property 'polyfills' are incompatible.
Type 'boolean | undefined' is not assignable to type 'boolean'.

Type 'null' is not assignable to type 'number | undefined'.

Type 'null' is not assignable to type 'HistoryApiFallback | undefined'.

Type 'null' is not assignable to type 'CopyTask[] | undefined'.

Type '{ dirPath: string; filePath: string; fileName: string; readmePath: string; usagesDir: string; tag: string; readme: string | undefined; overview: string; usage: JsonDocsUsage; ... 13 more ...; listeners: JsonDocsListener[]; }[]' is not assignable to type 'JsonDocsComponent[]'.
Type '{ dirPath: string; filePath: string; fileName: string; readmePath: string; usagesDir: string; tag: string; readme: string | undefined; overview: string; usage: d.JsonDocsUsage; docs: string; ... 12 more ...; listeners: d.JsonDocsListener[]; }' is not assignable to type 'JsonDocsComponent'.
Types of property 'readme' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'string[] | undefined' is not assignable to type 'string[]'.
Type 'undefined' is not assignable to type 'string[]'.

Type '{ name: string; type: string; mutable: boolean; attr: string | undefined; reflectToAttr: boolean; docs: string; docsTags: CompilerJsDocTagInfo[]; default: string | undefined; deprecation: string | undefined; values: JsonDocsValue[]; optional: boolean; required: boolean; }[]' is not assignable to type 'JsonDocsProp[]'.
Type '{ name: string; type: string; mutable: boolean; attr: string | undefined; reflectToAttr: boolean; docs: string; docsTags: d.CompilerJsDocTagInfo[]; default: string | undefined; deprecation: string | undefined; values: d.JsonDocsValue[]; optional: boolean; required: boolean; }' is not assignable to type 'JsonDocsProp'.
Types of property 'default' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type '{ name: string; type: string; mutable: false; attr: string; reflectToAttr: false; docs: string; docsTags: never[]; default: undefined; deprecation: undefined; values: JsonDocsValue[]; optional: true; required: false; }[]' is not assignable to type 'JsonDocsProp[]'.
Type '{ name: string; type: string; mutable: false; attr: string; reflectToAttr: false; docs: string; docsTags: never[]; default: undefined; deprecation: undefined; values: d.JsonDocsValue[]; optional: true; required: false; }' is not assignable to type 'JsonDocsProp'.
Types of property 'default' are incompatible.
Type 'undefined' is not assignable to type 'string'.

Type '(ComponentCompilerMeta | undefined)[]' is not assignable to type 'ComponentCompilerMeta[]'.
Type 'ComponentCompilerMeta | undefined' is not assignable to type 'ComponentCompilerMeta'.
Type 'undefined' is not assignable to type 'ComponentCompilerMeta'.

Type '(ComponentCompilerMeta | undefined)[][]' is not assignable to type 'readonly ComponentCompilerMeta[][]'.
Type '(ComponentCompilerMeta | undefined)[]' is not assignable to type 'ComponentCompilerMeta[]'.

Type 'null' is not assignable to type 'boolean | SourceMapOptions | undefined'.

Type 'null' is not assignable to type 'SourceMap | undefined'.

Type '{ name: string | undefined; tags: string[]; }[]' is not assignable to type 'CollectionDependencyData[]'.
Type '{ name: string | undefined; tags: string[]; }' is not assignable to type 'CollectionDependencyData'.
Types of property 'name' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'string | undefined' is not assignable to type 'string | number'.
Type 'undefined' is not assignable to type 'string | number'.

Type 'SourceMap | undefined' is not assignable to type 'SourceMap'.
Type 'undefined' is not assignable to type 'SourceMap'.

Type 'string | null' is not assignable to type 'string | undefined'.
Type 'null' is not assignable to type 'string | undefined'.

Type 'null' is not assignable to type 'Function'.

Type 'null' is not assignable to type 'Map<string, string[]>'.

Type 'null' is not assignable to type 'PrerenderConfig'.

Type 'null' is not assignable to type 'Set'.

Type 'null' is not assignable to type 'HydrateAnchorElement[]'.

Type 'null' is not assignable to type '(prerenderRequest: PrerenderUrlRequest) => Promise'.

Type 'CssNode | null' is not assignable to type 'void | CssNode'.
Type 'null' is not assignable to type 'void | CssNode'.

Type 'CssNode | null' is not assignable to type 'CssNode'.
Type 'null' is not assignable to type 'CssNode'.

Type 'CssNode | null' is not assignable to type 'void | CssNode'.

Type 'RegExpExecArray | null' is not assignable to type 'RegExpExecArray'.
Type 'null' is not assignable to type 'RegExpExecArray'.

Type 'null' is not assignable to type '() => string'.

Type 'null' is not assignable to type 'number'.

Type 'null' is not assignable to type 'boolean'.

Type 'null' is not assignable to type 'boolean | undefined'.

Type 'FsItem | undefined' is not assignable to type 'FsItem'.
Type 'undefined' is not assignable to type 'FsItem'.

Type 'null' is not assignable to type 'CompilerFileWatcherCallback[]'.

Type '(key: string) => string | undefined' is not assignable to type '(key: string) => string'.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type '(p: string) => Promise<string | undefined>' is not assignable to type '{ (p: string): Promise; (p: string, encoding: "utf8"): Promise; (p: string, encoding: "binary"): Promise; }'.
Type 'Promise<string | undefined>' is not assignable to type 'Promise'.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type '(p: string) => string | undefined' is not assignable to type '(p: string, encoding?: string | undefined) => string'.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type '((maxConcurrentWorkers: number) => WorkerMainController) | null' is not assignable to type '((maxConcurrentWorkers: number) => WorkerMainController) | undefined'.
Type 'null' is not assignable to type '((maxConcurrentWorkers: number) => WorkerMainController) | undefined'.

Type 'null' is not assignable to type 'ResolvedModuleWithFailedLookupLocations'.

Type 'null' is not assignable to type 'Worker'.

Type 'CollectionCompilerMeta | undefined' is not assignable to type 'CollectionCompilerMeta'.
Type 'undefined' is not assignable to type 'CollectionCompilerMeta'.

Type 'DeclarationName | undefined' is not assignable to type 'DeclarationName'.
Type 'undefined' is not assignable to type 'DeclarationName'.

Type 'boolean | null' is not assignable to type 'boolean'.
Type 'null' is not assignable to type 'boolean'.

Type 'undefined' is not assignable to type 'ComponentCompilerVirtualProperty'.

Type '{ name: string; method: string; bubbles: boolean; cancelable: boolean; composed: boolean; docs: CompilerJsDoc; complexType: ComponentCompilerEventComplexType; internal: boolean | undefined; }[]' is not assignable to type 'ComponentCompilerEvent[]'.
Type '{ name: string; method: string; bubbles: boolean; cancelable: boolean; composed: boolean; docs: d.CompilerJsDoc; complexType: d.ComponentCompilerEventComplexType; internal: boolean | undefined; }' is not assignable to type 'ComponentCompilerEvent'.
Types of property 'internal' are incompatible.
Type 'boolean | undefined' is not assignable to type 'boolean'.

Type '{ name: string; docs: CompilerJsDoc; complexType: ComponentCompilerMethodComplexType; internal: boolean | undefined; }[]' is not assignable to type 'ComponentCompilerMethod[]'.
Type '{ name: string; docs: d.CompilerJsDoc; complexType: d.ComponentCompilerMethodComplexType; internal: boolean | undefined; }' is not assignable to type 'ComponentCompilerMethod'.
Types of property 'internal' are incompatible.
Type 'boolean | undefined' is not assignable to type 'boolean'.

Type '{ name: string; type: ComponentCompilerPropertyType; attribute: string | undefined; reflect: boolean; mutable: boolean; required: boolean; optional: boolean; defaultValue: string | undefined; complexType: ComponentCompilerPropertyComplexType; docs: CompilerJsDoc; internal: boolean | undefined; }[]' is not assignable to type 'ComponentCompilerProperty[]'.
Type '{ name: string; type: d.ComponentCompilerPropertyType; attribute: string | undefined; reflect: boolean; mutable: boolean; required: boolean; optional: boolean; defaultValue: string | undefined; complexType: d.ComponentCompilerPropertyComplexType; docs: d.CompilerJsDoc; internal: boolean | undefined; }' is not assignable to type 'ComponentCompilerProperty'.
Types of property 'internal' are incompatible.
Type 'boolean | undefined' is not assignable to type 'boolean'.

Type 'null' is not assignable to type 'ImportData'.

Type 'undefined' is not assignable to type '"queryparams" | null'.

Type 'null' is not assignable to type 'WeakSet'.

Type 'null' is not assignable to type 'Module'.

Type 'Module | undefined' is not assignable to type 'Module'.
Type 'undefined' is not assignable to type 'Module'.

Type 'undefined' is not assignable to type 'CompilerJsDoc'.

Type '{ [x: string]: d.TypesMemberNameData[] | undefined; }' is not assignable to type 'TypesImportData'.
'string' index signatures are incompatible.
Type 'TypesMemberNameData[] | undefined' is not assignable to type 'TypesMemberNameData[]'.
Type 'undefined' is not assignable to type 'TypesMemberNameData[]'.

Type 'string | undefined' is not assignable to type 'string | null'.

Type '((data: { file: string; line: number; column: number; }) => void) | null' is not assignable to type 'OpenInEditorCallback | undefined'.
Type 'null' is not assignable to type 'OpenInEditorCallback | undefined'.

Type 'null' is not assignable to type 'WebSocket'.

Type 'null' is not assignable to type 'BuildOnEventRemove'.

Type 'null' is not assignable to type '() => void'.

Type 'null' is not assignable to type '(msg: DevServerMessage) => void'.

Type 'DevServerConfig | undefined' is not assignable to type 'DevServerConfig'.
Type 'undefined' is not assignable to type 'DevServerConfig'.

Type 'null' is not assignable to type '{ open(openId: string): Promise; }'.

Type 'string | null' is not assignable to type 'string | undefined'.

Type 'null' is not assignable to type 'Promise<DevServerEditor[]>'.

Type 'null' is not assignable to type '(req: IncomingMessage, res: ServerResponse, next: () => void) => void'.

Type 'null' is not assignable to type 'URL'.

Type 'null' is not assignable to type 'URLSearchParams'.

Type 'PageReloadStrategy | undefined' is not assignable to type 'PageReloadStrategy'.
Type 'undefined' is not assignable to type 'PageReloadStrategy'.

Type 'null' is not assignable to type 'Server<typeof IncomingMessage, typeof ServerResponse>'.

Type 'null' is not assignable to type 'DevWebSocket'.

Type 'null' is not assignable to type 'DevServerContext'.

Type 'DevWebSocket | null' is not assignable to type 'DevWebSocket'.
Type 'null' is not assignable to type 'DevWebSocket'.

Type 'null' is not assignable to type 'ChildProcess'.

Type 'null' is not assignable to type 'HydrateApp'.

Type '() => undefined' is not assignable to type '{ (cb?: (() => void) | undefined): TestServerResponse; (chunk: any, cb?: (() => void) | undefined): TestServerResponse; (chunk: any, encoding: BufferEncoding, cb?: (() => void) | undefined): TestServerResponse; }'.
Type 'undefined' is not assignable to type 'TestServerResponse'.

Type 'null' is not assignable to type 'ComponentConstructor'.

Type '(this: HostElement) => Promise | undefined' is not assignable to type '() => Promise'.
Type 'Promise | undefined' is not assignable to type 'Promise'.
Type 'undefined' is not assignable to type 'Promise'.

Type 'null' is not assignable to type 'Window & typeof globalThis'.
Type 'null' is not assignable to type 'Window'.

Type 'null' is not assignable to type 'Window & typeof globalThis'.

Type 'null' is not assignable to type 'MockCSSStyleSheet'.

Type 'null' is not assignable to type 'string | boolean'.

Type 'null' is not assignable to type 'Location'.

Type 'null' is not assignable to type 'MockElement'.

Type 'null' is not assignable to type 'SVGSVGElement'.

Type 'null' is not assignable to type 'SVGElement'.

Type 'null' is not assignable to type 'EventTarget'.

Type 'null' is not assignable to type 'MockEventListener[]'.

Type 'null' is not assignable to type 'MockDocument'.

Type '{ name: string; value: string; namespace: string | null; prefix: null; }[]' is not assignable to type 'Attribute[]'.
Type '{ name: string; value: string; namespace: string | null; prefix: null; }' is not assignable to type 'Attribute'.
Types of property 'namespace' are incompatible.
Type 'string | null' is not assignable to type 'string | undefined'.

Type '(element: MockElement) => string | null' is not assignable to type '(element: unknown) => string'.
Type 'string | null' is not assignable to type 'string'.
Type 'null' is not assignable to type 'string'.

Type 'ParentNode | null' is not assignable to type 'Node'.
Type 'null' is not assignable to type 'Node'.

Type 'null' is not assignable to type 'Document'.

Type 'string | null | undefined' is not assignable to type 'string | undefined'.

Type 'never[] | null' is not assignable to type 'RenderNode[]'.
Type 'null' is not assignable to type 'RenderNode[]'.

Type 'null' is not assignable to type 'VNode[]'.

Type 'null' is not assignable to type 'string | number | undefined'.

Type 'null' is not assignable to type 'string | number | Function'.

Type 'RenderNode | null' is not assignable to type 'RenderNode'.
Type 'null' is not assignable to type 'RenderNode'.

Type 'HTMLElement | null' is not assignable to type 'EventTarget'.
Type 'null' is not assignable to type 'EventTarget'.

Type 'string | null | undefined' is not assignable to type 'string | undefined'.
Type 'null' is not assignable to type 'string | undefined'.

Type 'null' is not assignable to type 'Set | undefined'.

Type 'null' is not assignable to type '[string, any][] | undefined'.

Type 'VNode[] | undefined' is not assignable to type 'VNode[]'.
Type 'undefined' is not assignable to type 'VNode[]'.

Type '(props: {}, children: VNode[], utils: FunctionalUtilities) => null' is not assignable to type 'FunctionalComponent<{}>'.
Type 'null' is not assignable to type 'VNode | VNode[]'.

Type '() => null' is not assignable to type 'FunctionalComponent<{}>'.
Type 'null' is not assignable to type 'VNode | VNode[]'.

Type 'null' is not assignable to type 'VNode'.

Type 'undefined' is not assignable to type 'VNode'.

Type 'RenderNode | undefined' is not assignable to type 'RenderNode'.
Type 'undefined' is not assignable to type 'RenderNode'.

Type 'RelocateNodeData | undefined' is not assignable to type 'RelocateNodeData'.
Type 'undefined' is not assignable to type 'RelocateNodeData'.

Type 'ChildNode | null' is not assignable to type 'Node'.
Type 'null' is not assignable to type 'Node'.

Type 'null' is not assignable to type 'ScreenshotBuild'.

Type 'null' is not assignable to type 'ScreenshotCache'.

Type 'null' is not assignable to type 'Buffer'.

Type 'null' is not assignable to type 'Screenshot'.

Type '(() => void) | undefined' is not assignable to type '() => any'.
Type 'undefined' is not assignable to type '() => any'.

Type '() => null' is not assignable to type '(opts: { rootDir: string; moduleId: string; path: string; }) => string'.
Type 'null' is not assignable to type 'string'.

Type '() => null' is not assignable to type '(opts: { moduleId: string; path?: string | undefined; version?: string | undefined; }) => string'.
Type 'null' is not assignable to type 'string'.

Type '() => string | undefined' is not assignable to type '() => string'.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

Type 'number | null' is not assignable to type 'number'.
Type 'null' is not assignable to type 'number'.

Type 'any[] | undefined' is not assignable to type 'any[]'.
Type 'undefined' is not assignable to type 'any[]'.

Type 'boolean | null | undefined' is not assignable to type 'boolean | undefined'.

Type 'null' is not assignable to type 'ConfigBundle[] | undefined'.

Type 'null' is not assignable to type 'OutputTarget[] | undefined'.

Type 'null' is not assignable to type 'TestingConfig | undefined'.

Type 'null' is not assignable to type 'Cache'.

Type 'null' is not assignable to type '{ access: (filePath: string) => Promise; accessSync: (filePath: string) => boolean; cancelDeleteDirectoriesFromDisk: (dirPaths: string[]) => void; cancelDeleteFilesFromDisk: (filePaths: string[]) => void; ... 17 more ...; writeFiles: (files: { ...; } | Map<...>, opts?: FsWriteOptions | undefined) => Promise...'.

Type 'HostRef | undefined' is not assignable to type 'HostRef'.
Type 'undefined' is not assignable to type 'HostRef'.

Type 'Function | undefined' is not assignable to type 'Function'.
Type 'undefined' is not assignable to type 'Function'.

Type 'RafCallback | undefined' is not assignable to type 'Function'.
Type 'undefined' is not assignable to type 'Function'.

Type 'QueuedLoadModule | undefined' is not assignable to type 'QueuedLoadModule'.
Type 'undefined' is not assignable to type 'QueuedLoadModule'.

Type 'null' is not assignable to type 'ElementHandle'.

Type 'null' is not assignable to type 'E2EPageInternal'.

Type 'ElementHandle | null' is not assignable to type 'ElementHandle'.
Type 'null' is not assignable to type 'ElementHandle'.

Type 'ElementHandle | null' is not assignable to type 'ElementHandle'.
Type 'null' is not assignable to type 'ElementHandle'.

Type 'ElementHandle | null' is not assignable to type 'ElementHandle | null'.
Type 'ElementHandle' is not assignable to type 'ElementHandle'.
Type 'Node' is missing the following properties from type 'Element': attributes, classList, className, clientHeight, and 114 more.

Type 'null' is not assignable to type 'Promise<JSHandle>'.

Type '(a?: any, b?: any) => Promise<ScreenshotDiff | undefined>' is not assignable to type '{ (): Promise; (description: string): Promise; (opts: ScreenshotOptions): Promise<...>; (description: string, opts: ScreenshotOptions): Promise<...>; }'.
Type 'Promise<ScreenshotDiff | undefined>' is not assignable to type 'Promise'.
Type 'ScreenshotDiff | undefined' is not assignable to type 'ScreenshotDiff'.
Type 'undefined' is not assignable to type 'ScreenshotDiff'.

Type 'null' is not assignable to type 'CompilerWatcher'.

Type 'null' is not assignable to type 'Promise'.

Type 'Browser | null' is not assignable to type 'Browser'.
Type 'null' is not assignable to type 'Browser'.

Type 'null' is not assignable to type 'ValidatedConfig'.

Type 'null' is not assignable to type 'Browser'.

Type 'null' is not assignable to type 'SourceMap'.

Type 'null' is not assignable to type 'PackageJsonData'.

Type 'null' is not assignable to type '{ [moduleId: string]: string; } | undefined'.
TS18047 167
Error messages 'var1' is possibly 'null'.

'configFileData' is possibly 'null'.

'canonicalLinkElm.parentNode' is possibly 'null'.

'link.parentNode' is possibly 'null'.

'href' is possibly 'null'.

'stencilScriptElm.parentNode' is possibly 'null'.

'attr' is possibly 'null'.

't.cmp' is possibly 'null'.

't.event' is possibly 'null'.

't.property' is possibly 'null'.

'appErrorElm.parentNode' is possibly 'null'.

'progressBar.parentNode' is possibly 'null'.

'serverProcess.stdout' is possibly 'null'.

'serverProcess.stderr' is possibly 'null'.

'node.nodeName' is possibly 'null'.

'element.nodeName' is possibly 'null'.

'nodeValue' is possibly 'null'.

'cloned' is possibly 'null'.

'clonedDiv' is possibly 'null'.

'clonedTemplate' is possibly 'null'.

'clonedTemplate.content.firstChild' is possibly 'null'.

'clonedTemplate.content.firstChild.textContent' is possibly 'null'.

'clonedWin' is possibly 'null'.

'titleElm' is possibly 'null'.

'doc.body.firstElementChild' is possibly 'null'.

'doc.body.firstElementChild.firstElementChild' is possibly 'null'.

'tmplElm.content.firstChild' is possibly 'null'.

'doc.firstElementChild' is possibly 'null'.

'doc.lastChild' is possibly 'null'.

'dstWin' is possibly 'null'.

'orgLocationNode.parentNode' is possibly 'null'.

'node.nodeValue' is possibly 'null'.

'node.parentNode' is possibly 'null'.

'appendAfter.parentNode' is possibly 'null'.

'hostElm.firstElementChild' is possibly 'null'.

'hostElm.lastElementChild' is possibly 'null'.

'nodeRef.nodeValue' is possibly 'null'.

'nodeRef.parentNode' is possibly 'null'.

'parentNode' is possibly 'null'.

'defaultHolder.parentNode' is possibly 'null'.

'nodeToRelocate.parentNode' is possibly 'null'.

'w' is possibly 'null'.

'elm.textContent' is possibly 'null'.

'rsp' is possibly 'null'.

'p.params' is possibly 'null'.

'head' is possibly 'null'.
TS2532 61
Error messages Object is possibly 'undefined'.
TS2454 45
Error messages Variable 'pkgJsonData' is used before being assigned.

Variable 'minifyOpts' is used before being assigned.

Variable 'workerCtrl' is used before being assigned.

Variable 'timespan' is used before being assigned.

Variable 'content' is used before being assigned.

Variable 'compilerExe' is used before being assigned.

Variable 'declarationOutputText' is used before being assigned.

Variable 'outputText' is used before being assigned.

Variable 'importResolvedFile' is used before being assigned.

Variable 'win' is used before being assigned.

Variable 'attrName' is used before being assigned.

Variable 'oldValue' is used before being assigned.

Variable 'newValue' is used before being assigned.

Variable 'hostId' is used before being assigned.

Variable 'promise' is used before being assigned.

Variable 'textContent' is used before being assigned.

Variable 'resolve' is used before being assigned.

Variable 'opts' is used before being assigned.
TS2722 39
Error messages Cannot invoke an object which is possibly 'undefined'.
TS2531 37
Error messages Object is possibly 'null'.
TS2352 19
Error messages Conversion of type 'null' to type 'CompilerSystem' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.

Conversion of type 'null' to type 'string' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.

Conversion of type 'null' to type 'string[]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.

Conversion of type '{ cmps: never[]; }' to type 'Module' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
Type '{ cmps: never[]; }' is missing the following properties from type 'Module': coreRuntimeApis, collectionName, dtsFilePath, excludeFromCollection, and 27 more.

Conversion of type 'null' to type 'ScreenshotCache' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
TS2769 12
Error messages No overload matches this call.
Overload 1 of 2, '(type: keyof DocumentEventMap, listener: (this: Document, ev: PointerEvent | MouseEvent | UIEvent | Event | ErrorEvent | ... 13 more ... | WheelEvent) => any, options?: boolean | ... 1 more ... | undefined): void', gave the following error.
Argument of type '"e"' is not assignable to parameter of type 'keyof DocumentEventMap'.
Overload 2 of 2, '(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions | undefined): void', gave the following error.
Argument of type 'null' is not assignable to parameter of type 'EventListenerOrEventListenerObject'.

No overload matches this call.
Overload 1 of 2, '(o: {}): string[]', gave the following error.
Argument of type 'BuildResultsComponentGraph | undefined' is not assignable to parameter of type '{}'.
Type 'undefined' is not assignable to type '{}'.
Overload 2 of 2, '(o: object): string[]', gave the following error.
Argument of type 'BuildResultsComponentGraph | undefined' is not assignable to parameter of type 'object'.
Type 'undefined' is not assignable to type 'object'.

No overload matches this call.
Overload 1 of 4, '(object: {}, method: never): SpyInstance<never, never>', gave the following error.
Argument of type 'CompilerWorkerContext | undefined' is not assignable to parameter of type '{}'.
Type 'undefined' is not assignable to type '{}'.
Overload 2 of 4, '(object: {}, method: never): SpyInstance<never, never>', gave the following error.
Argument of type 'CompilerWorkerContext | undefined' is not assignable to parameter of type '{}'.
Type 'undefined' is not assignable to type '{}'.

No overload matches this call.
The last overload gave the following error.
Argument of type 'string | null' is not assignable to parameter of type '(substring: string, ...args: any[]) => string'.
Type 'null' is not assignable to type '(substring: string, ...args: any[]) => string'.

No overload matches this call.
The last overload gave the following error.
Argument of type 'string | undefined' is not assignable to parameter of type 'string | RegExp'.
Type 'undefined' is not assignable to type 'string | RegExp'.

No overload matches this call.
Overload 1 of 2, '(configFileName: string, optionsToExtend: CompilerOptions | undefined, system: System, createProgram?: CreateProgram | undefined, reportDiagnostic?: DiagnosticReporter | undefined, reportWatchStatus?: WatchStatusReporter | undefined, watchOptionsToExtend?: WatchOptions | undefined, extraFileExtensions?: readonly FileExtensionInfo[] | undefined): WatchCompilerHostOfConfigFile<...>', gave the following error.
Argument of type 'string | undefined' is not assignable to parameter of type 'string'.
Type 'undefined' is not assignable to type 'string'.
Overload 2 of 2, '(rootFiles: string[], options: CompilerOptions, system: System, createProgram?: CreateProgram | undefined, reportDiagnostic?: DiagnosticReporter | undefined, reportWatchStatus?: WatchStatusReporter | undefined, projectReferences?: readonly ProjectReference[] | undefined, watchOptions?: WatchOptions | undefined): WatchCompilerHostOfFilesAndCompilerOptions<...>', gave the following error.
Argument of type 'string | undefined' is not assignable to parameter of type 'string[]'.
Type 'undefined' is not assignable to type 'string[]'.

No overload matches this call.
Overload 1 of 2, '(timeoutId: string | number | Timeout | undefined): void', gave the following error.
Argument of type 'Timeout | null' is not assignable to parameter of type 'string | number | Timeout | undefined'.
Type 'null' is not assignable to type 'string | number | Timeout | undefined'.
Overload 2 of 2, '(id: number | undefined): void', gave the following error.
Argument of type 'Timeout | null' is not assignable to parameter of type 'number | undefined'.
Type 'null' is not assignable to type 'number | undefined'.

No overload matches this call.
Overload 1 of 2, '(timeoutId: string | number | Timeout | undefined): void', gave the following error.
Argument of type 'Timeout | null' is not assignable to parameter of type 'string | number | Timeout | undefined'.
Overload 2 of 2, '(id: number | undefined): void', gave the following error.
Argument of type 'Timeout | null' is not assignable to parameter of type 'number | undefined'.

No overload matches this call.
Overload 1 of 3, '(p: string, encoding: "utf8"): Promise', gave the following error.
Argument of type 'string | undefined' is not assignable to parameter of type 'string'.
Type 'undefined' is not assignable to type 'string'.
Overload 2 of 3, '(p: string, encoding: "binary"): Promise', gave the following error.
Argument of type 'string | undefined' is not assignable to parameter of type 'string'.
Type 'undefined' is not assignable to type 'string'.

No overload matches this call.
Overload 1 of 2, '(values: [] | readonly unknown[]): Promise<unknown[] | []>', gave the following error.
Argument of type 'Promise[] | undefined' is not assignable to parameter of type '[] | readonly unknown[]'.
Type 'undefined' is not assignable to type '[] | readonly unknown[]'.
Overload 2 of 2, '(values: Iterable<void | PromiseLike>): Promise<void[]>', gave the following error.
Argument of type 'Promise[] | undefined' is not assignable to parameter of type 'Iterable<void | PromiseLike>'.
Type 'undefined' is not assignable to type 'Iterable<void | PromiseLike>'.
TS2790 10
Error messages The operand of a 'delete' operator must be optional.
TS2538 8
Error messages Type 'undefined' cannot be used as an index type.

Type 'null' cannot be used as an index type.
TS2344 5
Error messages Type 'T' does not satisfy the constraint 'Answers'.
TS2416 5
Error messages Property 'get' in type 'Cache' is not assignable to the same property in base type 'Cache'.
Type '(key: string) => Promise<string | null>' is not assignable to type '(key: string) => Promise'.
Type 'Promise<string | null>' is not assignable to type 'Promise'.
Type 'string | null' is not assignable to type 'string'.
Type 'null' is not assignable to type 'string'.

Property 'getMemoryStats' in type 'Cache' is not assignable to the same property in base type 'Cache'.
Type '() => string | null' is not assignable to type '() => string'.
Type 'string | null' is not assignable to type 'string'.
Type 'null' is not assignable to type 'string'.

Property 'find' in type 'E2EElement' is not assignable to the same property in base type 'E2EElementInternal'.
Type '(selector: string) => Promise<E2EElement | null>' is not assignable to type '(selector: FindSelector) => Promise'.
Type 'Promise<E2EElement | null>' is not assignable to type 'Promise'.
Type 'E2EElement | null' is not assignable to type 'E2EElement'.
Type 'null' is not assignable to type 'E2EElement'.

Property 'findAll' in type 'E2EElement' is not assignable to the same property in base type 'E2EElementInternal'.
Type '(selector: string) => Promise<E2EElement[]>' is not assignable to type '(selector: FindSelector) => Promise<E2EElement[]>'.
Type 'Promise<import("/home/runner/work/stencil/stencil/src/testing/puppeteer/puppeteer-element").E2EElement[]>' is not assignable to type 'Promise<import("/home/runner/work/stencil/stencil/src/testing/puppeteer/puppeteer-declarations").E2EElement[]>'.
Type 'import("/home/runner/work/stencil/stencil/src/testing/puppeteer/puppeteer-element").E2EElement[]' is not assignable to type 'import("/home/runner/work/stencil/stencil/src/testing/puppeteer/puppeteer-declarations").E2EElement[]'.
Type 'import("/home/runner/work/stencil/stencil/src/testing/puppeteer/puppeteer-element").E2EElement' is not assignable to type 'import("/home/runner/work/stencil/stencil/src/testing/puppeteer/puppeteer-declarations").E2EElement'.
The types returned by 'find(...)' are incompatible between these types.
Type 'Promise<E2EElement | null>' is not assignable to type 'Promise'.

Property 'getComputedStyle' in type 'E2EElement' is not assignable to the same property in base type 'E2EElementInternal'.
Type '(pseudoElt?: string | null | undefined) => Promise' is not assignable to type '(pseudoElt?: string | null | undefined) => Promise'.
Type 'Promise' is not assignable to type 'Promise'.
Type 'unknown' is not assignable to type 'CSSStyleDeclaration'.
TS18049 3
Error messages 'scriptElm' is possibly 'null' or 'undefined'.
TS2493 3
Error messages Tuple type '[]' of length '0' has no element at index '0'.
TS2488 2
Error messages Type 'Diagnostic[] | undefined' must have a 'Symbol.iterator' method that returns an iterator.

Type 'string[] | undefined' must have a 'Symbol.iterator' method that returns an iterator.
TS2774 2
Error messages This condition will always return true since this function is always defined. Did you mean to call it instead?
TS18046 2
Error messages 'style' is of type 'unknown'.
TS2684 1
Error messages The 'this' context of type 'ResolveIdHook | undefined' is not assignable to method's 'this' of type 'Function'.
Type 'undefined' is not assignable to type 'Function'.
TS2464 1
Error messages A computed property name must be of type 'string', 'number', 'symbol', or 'any'.
TS2430 1
Error messages Interface 'SerializeOpts' incorrectly extends interface 'SerializeCssOptions'.
Types of property 'usedSelectors' are incompatible.
Type 'UsedSelectors | null' is not assignable to type 'UsedSelectors | undefined'.
Type 'null' is not assignable to type 'UsedSelectors | undefined'.

Unused exports report

There are 10 unused exports on this PR. That's the same number of errors on main, so at least we're not creating new ones!

Unused exports
File Line Identifier
src/runtime/bootstrap-lazy.ts 15 setNonce
src/screenshot/screenshot-fs.ts 18 readScreenshotData
src/testing/testing-utils.ts 186 withSilentWarn
src/compiler/app-core/app-data.ts 3 BUILD
src/compiler/app-core/app-data.ts 92 Env
src/compiler/app-core/app-data.ts 94 NAMESPACE
src/compiler/fs-watch/fs-watch-rebuild.ts 111 updateCacheFromRebuild
src/testing/platform/testing-platform.ts 30 cssVarShim
src/testing/puppeteer/puppeteer-declarations.ts 485 WaitForEventOptions
src/client/polyfills/css-shim/utils.ts 2 GLOBAL_SCOPE

@alicewriteswrongs
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Created a Stencil dev build for this branch, install it like so:

npm i @stencil/[email protected]

tanner-reits
tanner-reits approved these changes Mar 9, 2023
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LGTM

@alicewriteswrongs alicewriteswrongs mentioned this pull request Mar 9, 2023
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@alicewriteswrongs
fix(test): support importing from ES modules in spec tests
ac423f7 
This adds support for importing from ES modules (w/ the `.mjs`
extension) in spec tests by ensuring that

1. files with such an extension are passed to the jest preprocessor
   (which then runs them through typescript)
2. our typescript helper for string-to-strong transpilation will emit
   `.mjs` files instead of just dropping them on the floor

Together these changes will allow running specs which import `.mjs`
files.
@alicewriteswrongs alicewriteswrongs enabled auto-merge (squash) March 13, 2023 18:02
@alicewriteswrongs alicewriteswrongs merged commit 23a73f0 into main Mar 13, 2023
@alicewriteswrongs alicewriteswrongs deleted the ap/jest-module-issue branch March 13, 2023 18:45
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@tanner-reits tanner-reits tanner-reits approved these changes

@rwaskiewicz rwaskiewicz rwaskiewicz approved these changes

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bug: upgrade to v2.14.0 breaks jest tests using esm
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@alicewriteswrongs @rwaskiewicz @tanner-reits