fix(compiler): resolve implicit enum types

[tanner-reits]

What is the current behavior?

Stencil will not resolve an implicit enum type on a Prop():

export enum Mode {
  DEFAULT = 'default'
}

@Prop() mode = Mode.DEFAULT

would result in an any type used in the generated components.d.ts file(s).

GitHub Issue Number: Fixes #2243

What is the new behavior?

Stencil will now correctly infer the type for the enum so long as it is exported (either from a separate file, or the component file).

Does this introduce a breaking change?

• Yes
• No

Testing

Automated tests

Added a unit test for the case where an enum is exported from the component file that uses it. Testing the case where the type lives in a separate file is not possible with the current test setup and transpileModule methods.

Manual tests

Tested both cases for exported types in a component started. The generated component.d.ts files correctly imported and re-exported the referenced type.

Other information

There are still some use cases where Stencil will not correctly resolve types (inferred or not). The most prominent instance is if a type is not exported. In this case, the generated components.d.ts file will still show the type as any. This is because we would need to recursively resolve the string representation of the complex type. This is something we could add in the future, but was out of scope of this work.

[github-actions]

--strictNullChecks error report

Typechecking with --strictNullChecks resulted in 1592 errors on this branch.

Unfortunately, it looks like that's an increase of 2 over main 😞.

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

Path	Location	Error	Message
src/compiler/transformers/decorators-to-static/component-decorator.ts	(152, 43)	TS18048	'cmpNode.name' is possibly 'undefined'.
src/compiler/transformers/decorators-to-static/component-decorator.ts	(159, 77)	TS18048	'symbol.declarations' is possibly 'undefined'.
src/compiler/transformers/decorators-to-static/prop-decorator.ts	(187, 7)	TS2345	Argument of type 'TypeNode | PropertyDeclaration | undefined' is not assignable to parameter of type 'Node'. Type 'undefined' is not assignable to type 'Node'.
src/compiler/transformers/test/parse-props.spec.ts	(51, 12)	TS18047	't.properties' is possibly 'null'.
src/compiler/transformers/transform-utils.ts	(557, 25)	TS2345	Argument of type 'NamedExportBindings | undefined' is not assignable to parameter of type 'Node'. Type 'undefined' is not assignable to type 'Node'.
src/compiler/transformers/transform-utils.ts	(802, 58)	TS2345	Argument of type 'Declaration | undefined' is not assignable to parameter of type 'Node'. Type 'undefined' is not assignable to type 'Node'.

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/utils/test/message-utils.spec.ts	21
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/compiler/sys/stencil-sys.ts	15
src/dev-server/request-handler.ts	15
src/sys/node/node-sys.ts	15
src/compiler/prerender/prerender-optimize.ts	14
src/compiler/style/css-parser/serialize-css.ts	14

Our most common errors

Typescript Error Code	Count	Error messages
TS2345	472	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 '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 '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	468	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 '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 'Node | readonly Node[] | undefined' is not assignable to type 'VisitResult'. Type 'undefined' is not assignable to type 'VisitResult'. 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 '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 'DevServer'. Type 'null' is not assignable to type 'Browser'.
TS18048	375	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'. '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'. 'node.comment' is possibly 'undefined'. 'node.selectors' is possibly 'undefined'. 'node.values' 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'. '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.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	98	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'. 'head' is possibly 'null'.
TS2722	39	Error messages Cannot invoke an object which is possibly 'undefined'.
TS2532	38	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").E2EEle

[alicewriteswrongs]

All looks good to me - I was wondering do you think it might be possible to use some of the stuff I put in place in #4212 to handle the case where an enum is not exported? I think a decent string representation of the type should be present in the type library - if so you might be able to do something like

getTypeLibrary()[typeId]

if you already have the id that is set in the complexType for the prop. Maybe that would need to be added in the bit of code that actually generates components.d.ts?

[alicewriteswrongs]

just making sure I understand, was this change necessary for support enums, or just something to take care of while you're in here?

[tanner-reits]

Yep, it was needed for the enums. In the case where the type is inferred there is no TypeNode in the prop declaration, so we can create one from the assignment value.

[tanner-reits]

All looks good to me - I was wondering do you think it might be possible to use some of the stuff I put in place in #4212 to handle the case where an enum is not exported? I think a decent string representation of the type should be present in the type library - if so you might be able to do something like

getTypeLibrary()[typeId]

if you already have the id that is set in the complexType for the prop. Maybe that would need to be added in the bit of code that actually generates components.d.ts?

@alicewriteswrongs I can try this out today! I'll do is separate from this work since it's kinda out-of-scope from the original issue I was solving, but would be good for us to support.

[alicewriteswrongs]

we talked and think it makes sense to go forward as-is!