stencil icon indicating copy to clipboard operation
stencil copied to clipboard

Published 20 hours ago • verified publisher icon ionic-team

feat(): @Prop getters / setters

Open johnjenkins opened this issue 4 years ago • 14 comments

Allowing the @Prop decorator to use get / set provides many quality of life improvements for developers and can improve the api of their components (see linked issues for many valid, uncontested use cases). Validation & Guards. Transforming data. Read-only properties. All things that may be achievable at the moment but can be extremely cumbersome to implement.

With this PR:

// This prop will be readonly (and will add '(readonly)' to the docs description)
@Prop()
get myReadonlyProp() {
  return 'a string';
}

// getter & setter with validation
private _agent = 'James Bond'; 
@Prop()
get agent() {
  return this._agent;
}
set agent(agent: string) {
  if (
       typeof agent === 'string' && 
       (agent === 'xxx' || agent === 'James Pond Robocod')
  ) this._agent = agent;
}

@Prop decorator attributes: attribute and reflect work as expected. Prop setters work as expected in relation to @Watch decorated methods (the Watch method will only be called after the setter has actually changed the property value).

fixes #1359 fixes #2879 fixes #230

Pull request checklist

Please check if your PR fulfills the following requirements:

  • [x] Tests for the changes have been added (for bug fixes / features)
  • [ ] Docs have been reviewed and added / updated if needed (for bug fixes / features)
    • They've been added here
  • [x] Build (npm run build) was run locally

Pull request type

Please check the type of change your PR introduces:

  • [ ] Bugfix
  • [x] Feature
  • [ ] Code style update (formatting, renaming)
  • [ ] Refactoring (no functional changes, no api changes)
  • [ ] Build related changes
  • [ ] Documentation content changes
  • [ ] Other (please describe):

What is the current behavior?

get and set cannot be used with the @Prop decorator

What is the new behavior?

As described above.

Does this introduce a breaking change?

  • [ ] Yes
  • [x] No

Manual Testing

  • Ran npm build and npm link from the root of the repo directory (on this branch)
  • Spun up a boilerplate Stencil app using the Stencil CLI npm init stencil
  • Linked my project with the instructions found in the Contributing guidelines
  • Added getters and optional setters to @Prop decorated properties.
  • Added @Watch methods to decorated properties.
npm run start
  • get only properties cannot be changed.
  • on change, values go through setter functionality.
  • only on successful change does watch get called
  • when decorated with reflect, 'simple' typed values are reflected the dom (as per current behaviour)
npm run build
  • get only properties are annotated in the docs as readonly

johnjenkins avatar May 03 '21 23:05 johnjenkins

Any plans for merging this feature?

arjunasuresh3 avatar May 17 '21 09:05 arjunasuresh3

To anyone interested, I built out a temporary package of all my recent PRs (and may add some other user's PRs in future too) - just until Stencil becomes more active.

This includes: new @Prop getters / setters (https://github.com/ionic-team/stencil/pull/2899) new @Mixin decorator (https://github.com/ionic-team/stencil/pull/2921) new sourceMap option for all output (including integration with @Mixins) (https://github.com/ionic-team/stencil/pull/2892)

You can test it out with little disruption by just swapping out any reference to @stencil/core in your package.json e.g.

"@stencil/core": "2.6.0"

becomes

"@stencil/core": "npm:@johnjenkins/stencil-community^2.4.0"

I will keep this package in-sync with @stencil/core master up until the relevant PRs get accepted or rejected. Many thanks!

johnjenkins avatar Jun 03 '21 09:06 johnjenkins

Thank you @johnjenkins for your hard work, you legend! Your PRs are all highly useful features!

theo-staizen avatar Jun 08 '21 22:06 theo-staizen

Is is possible to use this code before it is merged ?

rmegaide avatar Dec 16 '21 14:12 rmegaide

hi @rmegaide < you can use my fork if you like (at your own risk), I try to keep it up-to-date with upstream. I use it personally, and, as far as I can attest, it works fine :). get only props are very useful to me.

swap out "@stencil/core": "npm:@johnjenkins/stencil-community@^2.11.1"

in your package.json and npm i ... should work although anecdotally that doesn't always work for windows users

johnjenkins avatar Dec 16 '21 15:12 johnjenkins

hi @rmegaide < you can use my fork if you like (at your own risk), I try to keep it up-to-date with upstream. I use it personally, and, as far as I can attest, it works fine :). get only props are very useful to me.

swap out "@stencil/core": "npm:@johnjenkins/stencil-community@^2.11.1"

in your package.json and npm i ... should work although anecdotally that doesn't always work for windows users

This worked great, thanks a lot. Will it be merged any time soon ?

rmegaide avatar Dec 16 '21 16:12 rmegaide

Will it be merged any time soon ?

I think it's in the core teams' next phase? fingers crossed

johnjenkins avatar Dec 16 '21 16:12 johnjenkins

Just for what it's worth, this PR would be greatly appreciated and used immediately if I could. One of my main problems with Stencil is the fact that Props are not really type safe because realistically they are all unknown. Using setters or getters would allow to validate and possibly coerce input values. For example, a Prop that I expect to contain a number is going to come in a "5" because it's an attribute. Using a setter, I could convert it to a number. Watch almost works for this but not really. To get a similar effect I would have to make a duplicate private property for every Prop, and remember to only read from that one. Which just adds bloat and noise to components.

vectorjohn avatar Jun 08 '22 18:06 vectorjohn

--strictNullChecks error report

Typechecking with --strictNullChecks resulted in 2101 errors on this branch.

That's 24 fewer than on main! 🎉🎉🎉

reports and statistics

Our most error-prone files
Path Error Count
src/compiler/config/test/validate-dev-server.spec.ts 49
src/compiler/config/test/validate-output-www.spec.ts 40
src/screenshot/connector-base.ts 40
src/dev-server/index.ts 38
src/mock-doc/serialize-node.ts 36
src/compiler/sys/tests/in-memory-fs.spec.ts 34
src/screenshot/screenshot-compare.ts 33
src/dev-server/server-process.ts 32
src/runtime/vdom/vdom-render.ts 31
src/compiler/sys/typescript/typescript-config.ts 28
src/compiler/build/build-stats.ts 27
src/compiler/output-targets/dist-lazy/generate-lazy-module.ts 26
src/compiler/prerender/prerender-main.ts 25
src/sys/node/test/worker-manager.spec.ts 24
src/compiler/style/test/optimize-css.spec.ts 23
src/runtime/update-component.ts 23
src/compiler/config/test/validate-paths.spec.ts 22
src/utils/test/message-utils.spec.ts 21
src/compiler/plugin/plugin.ts 20
src/mock-doc/test/custom-elements.spec.ts 19
Our most common errors
Typescript Error Code Count Error messages
TS2345 609
Error messages Argument of type 'CompilerSystem | undefined' is not assignable to parameter of type 'CompilerSystem'.
Type 'undefined' is not assignable to type 'CompilerSystem'.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Argument of type 'ElementHandle<Element> | null' is not assignable to parameter of type 'ElementHandle<Element>'.
Type 'null' is not assignable to type 'ElementHandle<Element>'.

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

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

Argument of type '{ tags: never[]; text: string; } | null | undefined' is not assignable to parameter of type 'CompilerJsDoc | undefined'.
Type 'null' is not assignable to type 'CompilerJsDoc | undefined'.
TS18048 591
Error messages 'config.sys' is possibly 'undefined'.

'sys.details' is possibly 'undefined'.

'details' is possibly 'undefined'.

'config.devServer' is possibly 'undefined'.

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

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

'sys.parseYarnLockFile' is possibly 'undefined'.

'scope.styleEl' is possibly 'undefined'.

'moduleFile' is possibly 'undefined'.

'config.extras' is possibly 'undefined'.

'config.logger' is possibly 'undefined'.

'hmr' is possibly 'undefined'.

'config.outputTargets' is possibly 'undefined'.

'c.moduleFiles' is possibly 'undefined'.

'a.name' is possibly 'undefined'.

'b.name' is possibly 'undefined'.

'orgNodeResolveId' is possibly 'undefined'.

'config.rollupPlugins' is possibly 'undefined'.

'config.rollupConfig' is possibly 'undefined'.

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

'compilerCtx.worker' is possibly 'undefined'.

'pluginTransforms.dependencies' is possibly 'undefined'.

'lastModified' is possibly 'undefined'.

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

'inputConfig.devServer' is possibly 'undefined'.

'inputConfig.flags' is possibly 'undefined'.

'userConfig.flags' is possibly 'undefined'.

'www' is possibly 'undefined'.

'outputTarget' is possibly 'undefined'.

'o' is possibly 'undefined'.

'cmp' is possibly 'undefined'.

'deps' is possibly 'undefined'.

'cmp.directDependents' is possibly 'undefined'.

'cmp.dependents' is possibly 'undefined'.

'config.bundles' is possibly 'undefined'.

'c.dependencies' is possibly 'undefined'.

'c.directDependencies' is possibly 'undefined'.

'outputTargets' is possibly 'undefined'.

'opts' is possibly 'undefined'.

'errorLine.text' is possibly 'undefined'.

'errorLine.errorLength' is possibly 'undefined'.

'd.lines' is possibly 'undefined'.

'opts.format' is possibly 'undefined'.

'entryModule' is possibly 'undefined'.

'a.directDependents' is possibly 'undefined'.

'b.directDependents' is possibly 'undefined'.

'a.directDependencies' is possibly 'undefined'.

'b.directDependencies' is possibly 'undefined'.

'a.dependents' is possibly 'undefined'.

'b.dependents' is possibly 'undefined'.

'a.dependencies' is possibly 'undefined'.

'b.dependencies' is possibly 'undefined'.

'bundleOptions.loader' is possibly 'undefined'.

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

'transformResults.id' is possibly 'undefined'.

'transformResults.dependencies' is possibly 'undefined'.

'transformResults.diagnostics' is possibly 'undefined'.

'config.maxConcurrentWorkers' is possibly 'undefined'.

'hydrateOpts.staticComponents' is possibly 'undefined'.

'sys.generateFileHash' is possibly 'undefined'.

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

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

'serviceWorker' is possibly 'undefined'.

'node.comment' is possibly 'undefined'.

'node.selectors' is possibly 'undefined'.

'node.values' is possibly 'undefined'.

'moduleId' is possibly 'undefined'.

'sys' is possibly 'undefined'.

'tsResults.diagnostics' is possibly 'undefined'.

'r.resolvedModule' is possibly 'undefined'.

'results' is possibly 'undefined'.

'compilerSystem.watchDirectory' is possibly 'undefined'.

'compilerSystem.watchFile' is possibly 'undefined'.

'collectionManifest.bundles' is possibly 'undefined'.

'cstrMethod.body' is possibly 'undefined'.

'cmp.dependencies' is possibly 'undefined'.

'foundDep' is possibly 'undefined'.

'connectedCallback.body' is possibly 'undefined'.

'cmpNode.name' is possibly 'undefined'.

'symbol.declarations' is possibly 'undefined'.

'signature' is possibly 'undefined'.

'collection.moduleFiles' is possibly 'undefined'.

'tsSourceFiles' is possibly 'undefined'.

'results.data' is possibly 'undefined'.

'results.imports' is possibly 'undefined'.

'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'.

'ref.$hostElement$' is possibly 'undefined'.

'propDesc' is possibly 'undefined'.

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

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

'elm' is possibly 'undefined'.

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

'childrenPromises' is possibly 'undefined'.

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

'nodeRef' is possibly 'undefined'.

'hostElm' is possibly 'undefined'.

'screenshot.diff' is possibly 'undefined'.

'screenshotCache.items' is possibly 'undefined'.

'a.width' is possibly 'undefined'.

'b.width' is possibly 'undefined'.

'a.height' is possibly 'undefined'.

'b.height' is possibly 'undefined'.

'a.id' is possibly 'undefined'.

'b.id' is possibly 'undefined'.

'emulateConfig.viewport' is possibly 'undefined'.

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

'res.statusCode' is possibly 'undefined'.

'tsSysWatchDirectory' is possibly 'undefined'.

'tsSysWatchFile' is possibly 'undefined'.

'sys.events' is possibly 'undefined'.

't.retries' is possibly 'undefined'.

'testing.emulate' is possibly 'undefined'.

'parsedConfig.collectCoverageFrom' is possibly 'undefined'.

'compare.width' is possibly 'undefined'.

'compare.deviceScaleFactor' is possibly 'undefined'.

'compare.height' is possibly 'undefined'.

'config' is possibly 'undefined'.

'screenshotEmulate.viewport' is possibly 'undefined'.

'diagnostic.lines' is possibly 'undefined'.

'd.absFilePath' is possibly 'undefined'.

'd.code' is possibly 'undefined'.

'err.lines' is possibly 'undefined'.
TS2322 509
Error messages Type 'string | null | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Type 'null' is not assignable to type 'WatchOfConfigFile<BuilderProgram>'.

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<EmitAndSemanticDiagnosticsBuilderProgram>; 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<PartialResolvedId>' is not assignable to type 'ResolveIdHook'.
Types of parameters 'importer' and 'importer' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Type '{ name: string; type: string; mutable: boolean; attr: string | undefined; reflectToAttr: boolean; docs: string; docsTags: CompilerJsDocTagInfo[]; default: string | undefined; ... 5 more ...; setter: boolean; }[]' is not assignable to type 'JsonDocsProp[]'.
Type '{ name: string; type: string; mutable: boolean; attr: string | undefined; reflectToAttr: boolean; docs: string; docsTags: d.CompilerJsDocTagInfo[]; default: string | undefined; deprecation: string | undefined; ... 4 more ...; setter: boolean; }' is not assignable to type 'JsonDocsProp'.
Types of property 'default' are incompatible.
Type 'string | undefined' is not assignable to type 'string'.
Type 'undefined' is not assignable to type 'string'.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Type 'null' is not assignable to type 'ElementHandle<Element>'.

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

Type 'ElementHandle<Element> | null' is not assignable to type 'ElementHandle<Element>'.
Type 'null' is not assignable to type 'ElementHandle<Element>'.

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

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

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

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

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

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

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

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

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

Type 'null' is not assignable to type '{ [moduleId: string]: string; } | undefined'.
TS18047 134
Error messages 'var1' is possibly 'null'.

'configFileData' is possibly 'null'.

'canonicalLinkElm.parentNode' is possibly 'null'.

'link.parentNode' is possibly 'null'.

'href' is possibly 'null'.

'stencilScriptElm.parentNode' is possibly 'null'.

'attr' is possibly 'null'.

't.cmp' is possibly 'null'.

't.event' is possibly 'null'.

'appErrorElm.parentNode' is possibly 'null'.

'progressBar.parentNode' is possibly 'null'.

'serverProcess.stdout' is possibly 'null'.

'serverProcess.stderr' is possibly 'null'.

'node.nodeName' is possibly 'null'.

'element.nodeName' is possibly 'null'.

'nodeValue' is possibly 'null'.

'cloned' is possibly 'null'.

'clonedDiv' is possibly 'null'.

'clonedTemplate' is possibly 'null'.

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

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

'clonedWin' is possibly 'null'.

'titleElm' is possibly 'null'.

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

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

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

'doc.firstElementChild' is possibly 'null'.

'doc.lastChild' is possibly 'null'.

'dstWin' is possibly 'null'.

'orgLocationNode.parentNode' is possibly 'null'.

'node.nodeValue' is possibly 'null'.

'node.parentNode' is possibly 'null'.

'appendAfter.parentNode' is possibly 'null'.

'hostElm.firstElementChild' is possibly 'null'.

'hostElm.lastElementChild' is possibly 'null'.

'nodeRef.nodeValue' is possibly 'null'.

'nodeRef.parentNode' is possibly 'null'.

'parentNode' is possibly 'null'.

'defaultHolder.parentNode' is possibly 'null'.

'nodeToRelocate.parentNode' is possibly 'null'.

'w' is possibly 'null'.

'elm.textContent' is possibly 'null'.

'rsp' is possibly 'null'.

'p.params' is possibly 'null'.

'head' is possibly 'null'.
TS2532 63
Error messages Object is possibly 'undefined'.
TS2454 46
Error messages Variable 'pkgJsonData' is used before being assigned.

Variable 'minifyOpts' is used before being assigned.

Variable 'workerCtrl' is used before being assigned.

Variable 'timespan' is used before being assigned.

Variable 'content' is used before being assigned.

Variable 'compilerExe' is used before being assigned.

Variable 'outputText' is used before being assigned.

Variable 'importResolvedFile' is used before being assigned.

Variable 'win' is used before being assigned.

Variable 'attrName' is used before being assigned.

Variable 'oldValue' is used before being assigned.

Variable 'newValue' is used before being assigned.

Variable 'hostId' is used before being assigned.

Variable 'promise' is used before being assigned.

Variable 'textContent' is used before being assigned.

Variable 'resolve' is used before being assigned.

Variable 'opts' is used before being assigned.
TS2722 41
Error messages Cannot invoke an object which is possibly 'undefined'.
TS2531 37
Error messages Object is possibly 'null'.
TS2352 19
Error messages Conversion of type 'null' to type 'CompilerSystem' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.

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

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

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

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

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

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

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

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

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

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

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

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

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

Type 'null' cannot be used as an index type.
TS2344 5
Error messages Type 'T' does not satisfy the constraint 'Answers'.
TS2416 4
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<E2EElement>'.
Type 'Promise<E2EElement | null>' is not assignable to type 'Promise<E2EElement>'.
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<E2EElement>'.
TS18049 3
Error messages 'scriptElm' is possibly 'null' or 'undefined'.
TS2493 3
Error messages Tuple type '[]' of length '0' has no element at index '0'.
TS2488 2
Error messages Type 'Diagnostic[] | undefined' must have a 'Symbol.iterator' method that returns an iterator.

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

Unused exports report

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

Unused exports
File Line Identifier
src/runtime/bootstrap-lazy.ts 15 setNonce
src/screenshot/screenshot-fs.ts 18 readScreenshotData
src/testing/testing-utils.ts 186 withSilentWarn
src/compiler/app-core/app-data.ts 3 BUILD
src/compiler/app-core/app-data.ts 88 Env
src/compiler/app-core/app-data.ts 90 NAMESPACE
src/compiler/fs-watch/fs-watch-rebuild.ts 111 updateCacheFromRebuild
src/testing/platform/testing-platform.ts 29 cssVarShim
src/testing/puppeteer/puppeteer-declarations.ts 513 WaitForEventOptions
src/client/polyfills/css-shim/utils.ts 1 GLOBAL_SCOPE

github-actions[bot] avatar Aug 30 '22 21:08 github-actions[bot]

Will this feature ever merged to the master? My fingers are crossed since 12 month. Using get/set properties will make our life much more easier.

Chili6666 avatar Sep 11 '22 12:09 Chili6666

This would be really useful to me. I try to imitate existing DOM APIs as much as possible, but there are several properties which behave differently in HTML vs the DOM. For example, the form attribute on a <button> is a string (the ID of a form), while HTMLButtonElement["form"] is an HTMLFormElement. To replicate this functionality, I want a setter for the form prop that accepts either a string or a form element.

ysulyma avatar Dec 10 '22 19:12 ysulyma

@johnjenkins Hi John 👋 Great work! Let's hope the Stencil Team can have a look this year 🚂

tfrijsewijk avatar Jul 15 '23 13:07 tfrijsewijk