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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →NG8108 means Angular cannot determine statically whether a component should skip hydration because ngSkipHydration has a dynamic template value. Use the empty attribute or the literal value "true". If skipping should depend on application state, conditionally render a component branch with the static attribute instead of binding the attribute itself.
What NG8108 means
NG8108, named skipHydrationNotStatic, is an Angular extended diagnostic for a ngSkipHydration template attribute that is not statically analyzable. Angular needs to know at compile time whether that component should be hydrated. A value that looks like a template expression does not provide the required static value. See Angular’s NG8108 diagnostic documentation.
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Extended diagnostics flag template patterns that may lead to unintended behavior. NG8108 is emitted when strictTemplates is enabled; see the Extended Diagnostics overview for the broader configuration context.
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Use a static attribute in the template
For an unconditional opt-out, put the attribute directly on the component host. Either of these forms is valid:
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<user-viewer ngSkipHydration />
<user-viewer ngSkipHydration="true" />Keep the special attribute static. For example, ngSkipHydration="hasUser" does not express a compile-time static value and can trigger NG8108.
Make the choice conditional by rendering a branch
If application state determines whether the component should skip hydration, put the static attribute on only the branch that needs it. Render an alternative branch without the attribute when it should hydrate. Angular’s diagnostic page demonstrates this approach with *ngIf and an ng-template; use the control-flow syntax supported by your application’s Angular version.
<user-viewer *ngIf="skipThisComponent; else hydratedViewer" ngSkipHydration />
<ng-template #hydratedViewer>
<user-viewer />
</ng-template>The condition controls which component branch is rendered; it does not turn ngSkipHydration into a dynamic attribute.
Put it on a component host, not an ordinary element
ngSkipHydration is valid only on a component host node. Adding it to an ordinary DOM element such as a div causes NG0504. Remove the attribute from the ordinary element or move it to the component host.
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Angular’s hydration guide also documents a component host configuration form: host: {ngSkipHydration: 'true'}. This is a host-level mechanism, distinct from dynamically binding the special attribute in template markup.
Understand the cost before skipping hydration
Skipping hydration applies to the component and its children. Angular destroys that server-rendered region and renders it again on the client, as though hydration were not enabled for that subtree. This can restore client rendering for a component that is incompatible with hydration, but the subtree no longer receives hydration’s benefits.
Angular treats this as a workaround, not a routine optimization. Its hydration guide states: “Components that break hydration should be considered bugs that need to be fixed.” Prefer correcting the hydration-breaking pattern when possible, and avoid putting ngSkipHydration on the root application component because that effectively disables hydration for the application.
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Configure or suppress the diagnostic
Extended diagnostics require strictTemplates. NG8108 can be configured under angularCompilerOptions.extendedDiagnostics.checks.skipHydrationNotStatic; Angular’s diagnostic page demonstrates suppress as a way to disable the check. Suppression hides the warning—it does not make a dynamic attribute value statically analyzable—so correcting the template is generally the more direct fix.
Angular compiler behavior can change. For version-specific details, use the documentation for the Angular major version installed in your project.
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