fix(compiler): restrict config extras slot fix flags

[tanner-reits]

What is the current behavior?

A user can currently set both the experimentalSlotFixes flag and any of the other scoped slot patch flags (like slotChildNodesFix). So a config may look like:

// stencil.config.ts

extras: {
  experimentalSlotFixes: true,
  slotChildNodesFix: true
}

This can be confusing since the experimentalSlotFixes flag will override any of the other patch flags.

GitHub Issue Number: N/A

What is the new behavior?

The config type (and downstream validation logic) will only allow the individual patch flags to be set if experimentalSlotFixes is omitted or explicitly set false

// stencil.config.ts

extras: {
  experimentalSlotFixes: true,
  slotChildNodesFix: true // <-- valid
}

// stencil.config.ts

extras: {
  experimentalSlotFixes: false,
  slotChildNodesFix: true // <-- valid
}

// stencil.config.ts

extras: {
  slotChildNodesFix: true // <-- valid
}

// stencil.config.ts

extras: {
  experimentalSlotFixes: true,
  slotChildNodesFix: false // <-- invalid
}

If a user does build a project with one of the invalid config options, a warning will be logged at compile time stating that the individual flags will be overridden based on experimentalSlotFixes.

Does this introduce a breaking change?

• Yes
• No

Testing

Automated tests
Automated tests for config validation were updated accordingly.

Manual tests
A build of this commit can be installed in a component starter. In the stencil.config.ts, verify that the following results in intellisense errors and a compile-time warning during npm run build:

extras: {
    experimentalSlotFixes: true,
    slotChildNodesFix: false,
}

Other information

[github-actions]

--strictNullChecks error report

Typechecking with --strictNullChecks resulted in 1530 errors on this branch.

Unfortunately, it looks like that's an increase of 1 over main 😞.

Violations Not on `main` (may be more than the count above)

Path	Location	Error	Message
src/compiler/config/test/validate-config.spec.ts	(420, 12)	TS18048	'config.extras' is possibly 'undefined'.
src/compiler/config/test/validate-config.spec.ts	(421, 12)	TS18048	'config.extras' is possibly 'undefined'.
src/compiler/config/validate-config.ts	(129, 61)	TS18048	'validatedConfig.extras' is possibly 'undefined'.

reports and statistics

Our most error-prone files

Path	Error Count
src/dev-server/index.ts	37
src/mock-doc/serialize-node.ts	36
src/dev-server/server-process.ts	32
src/compiler/prerender/prerender-main.ts	29
src/compiler/build/build-stats.ts	27
src/compiler/output-targets/dist-lazy/generate-lazy-module.ts	25
src/compiler/style/test/optimize-css.spec.ts	23
src/runtime/vdom/vdom-render.ts	23
src/testing/puppeteer/puppeteer-element.ts	23
src/runtime/client-hydrate.ts	19
src/screenshot/connector-base.ts	19
src/compiler/bundle/dev-module.ts	17
src/compiler/config/test/validate-paths.spec.ts	16
src/compiler/config/test/validate-config.spec.ts	15
src/dev-server/request-handler.ts	15
src/compiler/prerender/prerender-optimize.ts	14
src/compiler/sys/stencil-sys.ts	14
src/compiler/transpile/transpile-module.ts	14
src/runtime/vdom/vdom-annotations.ts	14
src/sys/node/node-sys.ts	14

Our most common errors

Typescript Error Code	Count	Error messages
TS2345	459	Error messages Argument of type 'string | undefined' is not assignable to parameter of type 'string'. Type 'undefined' is not assignable to type 'string'. Argument of type 'null' is not assignable to parameter of type 'BuildResultsComponentGraph'. Argument of type 'ComponentRuntimeHostListener[] | undefined' is not assignable to parameter of type 'ComponentRuntimeHostListener[]'. Type 'undefined' is not assignable to type 'ComponentRuntimeHostListener[]'. 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 'CompilerSystem | undefined' is not assignable to parameter of type 'CompilerSystem'. Type 'undefined' is not assignable to type 'CompilerSystem'. 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 '(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 'string | null' is not assignable to parameter of type 'string'. Type 'null' is not assignable to type 'string'. 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 '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[]'. 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 'Expression | undefined' is not assignable to parameter of type 'Node'. Type 'undefined' is not assignable to type 'Node'. 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 'TypeNode | PropertyDeclaration | 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 '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 'ValidatedConfig | null | undefined' is not assignable to parameter of type 'ValidatedConfig'. Type 'undefined' is not assignable to type 'ValidatedConfig'. 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 'NamedImportBindings | undefined' is not assignable to parameter of type 'Node'. Type 'undefined' is not assignable to type 'Node'. Argument of type 'TypeDeclLike | undefined' is not assignable to parameter of type 'Node'. Type 'undefined' is not assignable to type 'Node'. 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 'CompilerWatcher | undefined' is not assignable to parameter of type 'CompilerWatcher'. Type 'undefined' is not assignable to type 'CompilerWatcher'. Argument of type 'DevServer | null' is not assignable to parameter of type 'DevServer'. Type 'null' is not assignable to type 'DevServer'. 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 'ComponentInterface | HostElement | undefined' is not assignable to parameter of type 'ComponentInterface | HostElement'. Type 'undefined' is not assignable to type 'ComponentInterface | HostElement'. 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 'ChildType'. Argument of type '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 '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 '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'.
TS2322	425	Error messages Type 'string | null | undefined' is not assignable to type 'string'. Type 'undefined' is not assignable to type 'string'. Type 'boolean | null | undefined' is not assignable to type 'boolean | undefined'. Type 'null' is not assignable to type 'boolean | undefined'. Type 'undefined' is not assignable to type 'string'. Type 'undefined' is not assignable to type 'ComponentConstructor | Promise'. 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 '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; isPrimaryPackageOutputTarget: 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 '(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 'string | 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 '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 'null' is not assignable to type '((maxConcurrentWorkers: number) => WorkerMainController) | undefined'. Type 'null' is not assignable to type 'ResolvedModuleWithFailedLookupLocations'. Type 'CollectionCompilerMeta | undefined' is not assignable to type 'CollectionCompilerMeta'. Type 'undefined' is not assignable to type 'CollectionCompilerMeta'. 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 'Node | readonly Node[] | undefined' is not assignable to type 'VisitResult'. Type 'undefined' is not assignable to type 'VisitResult'. Type 'DeclarationName | undefined' is not assignable to type 'DeclarationName'. Type 'undefined' is not assignable to type 'DeclarationName'. 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 '((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 '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 'string | undefined' is not assignable to type 'string | null'. 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 'HTMLElement | null' is not assignable to type 'HTMLElement'. Type 'null' is not assignable to type 'HTMLElement'. 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 '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 'Promise | undefined' is not assignable to type 'Promise'. Type 'undefined' is not assignable to type 'Promise'. 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 '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 'undefined' is not assignable to type 'MockNode'. Type 'null' is not assignable to type 'MockNode[]'. 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 '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 'null' is not assignable to type 'ValidatedConfig'.
TS18048	369	Error messages 'sys.details' is possibly 'undefined'. 'details' is possibly 'undefined'. 'config.sys.getDevServerExecutingPath' is possibly 'undefined'. 'config.sys.dynamicImport' is possibly 'undefined'. 'config.sys.lazyRequire' is possibly 'undefined'. 'sys.parseYarnLockFile' is possibly 'undefined'. 'sys.fetch' is possibly 'undefined'. 'moduleFile' is possibly 'undefined'. 'config.extras' is possibly 'undefined'. 'config.sys' 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.inputOptions' is possibly 'undefined'. 'compilerCtx.worker' is possibly 'undefined'. 'lastModified' is possibly 'undefined'. 'config.devServer.historyApiFallback' is possibly 'undefined'. 'inputConfig.flags' is possibly 'undefined'. 'userConfig.flags' is possibly 'undefined'. 'validatedConfig.extras' is possibly 'undefined'. 'outputTarget.serviceWorker' 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'. 'config.sys.generateContentHash' is possibly 'undefined'. 'config.sys.copy' 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'. 'config.maxConcurrentWorkers' is possibly 'undefined'. 'config.logger.createLineUpdater' 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'. 'tsResults.diagnostics' is possibly 'undefined'. 'r.resolvedModule' is possibly 'undefined'. 'compilerSystem.watchDirectory' is possibly 'undefined'. 'compilerSystem.watchFile' is possibly 'undefined'. 'collectionManifest.bundles' 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.afterDeclarations' is possibly 'undefined'. 'transformers.before' 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'. 'nodeRef' is possibly 'undefined'. 'screenshot.diff' is possibly 'undefined'. 'screenshotCache.items' 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.deviceScaleFactor' is possibly 'undefined'. 'config' is possibly 'undefined'. 'screenshotEmulate.viewport' is possibly 'undefined'. 'd.absFilePath' is possibly 'undefined'. 'd.code' is possibly 'undefined'.
TS18047	99	Error messages '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.properties' 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'. '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'. 'elm.textContent' is possibly 'null'. 'rsp' is possibly 'null'. 'compilerWatcher' is possibly 'null'.
TS2722	39	Error messages Cannot invoke an object which is possibly 'undefined'.
TS2532	39	Error messages Object is possibly 'undefined'.
TS2531	25	Error messages Object is possibly 'null'.
TS2454	15	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 'declarationOutputText' is used before being assigned. Variable 'outputText' is used before being assigned. Variable 'win' is used before being assigned. Variable 'hostId' 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.
TS2352	13	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 '{ 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, outputTargetCoreRuntimeApis, collectionName, dtsFilePath, and 28 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	10	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. 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'.
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'.
TS2493	3	Error messages Tuple type '[]' of length '0' has no element at index '0'.
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'.
TS2488	1	Error messages Type 'string[] | undefined' must have a 'Symbol.iterator' method that returns a

[rwaskiewicz]

Approved with a handful of non-blocking comments

[alicewriteswrongs]

I think this all looks good, just had one question basically about the wording