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/**
* If set to `incremental`, only those leaf pages that export
* `experimental_ppr = true` will have partial prerendering enabled. If any
* page exports this value as `false` or does not export it at all will not
* have partial prerendering enabled. If set to a boolean, the options for
* `experimental_ppr` will be ignored.
*/
export type ExperimentalPPRConfig = boolean | 'incremental'
/**
* Returns true if partial prerendering is enabled for the application. It does
* not tell you if a given route has PPR enabled, as that requires analysis of
* the route's configuration.
*
* @see {@link checkIsRoutePPREnabled} - for checking if a specific route has PPR enabled.
*/
export function checkIsAppPPREnabled(
config: ExperimentalPPRConfig | undefined
): boolean {
// If the config is undefined, partial prerendering is disabled.
if (typeof config === 'undefined') return false
// If the config is a boolean, use it directly.
if (typeof config === 'boolean') return config
// If the config is a string, it must be 'incremental' to enable partial
// prerendering.
if (config === 'incremental') return true
return false
}
/**
* Returns true if partial prerendering is supported for the current page with
* the provided app configuration. If the application doesn't have partial
* prerendering enabled, this function will always return false. If you want to
* check if the application has partial prerendering enabled
*
* @see {@link checkIsAppPPREnabled} for checking if the application has PPR enabled.
*/
export function checkIsRoutePPREnabled(
config: ExperimentalPPRConfig | undefined,
appConfig: {
experimental_ppr?: boolean
}
): boolean {
// If the config is undefined, partial prerendering is disabled.
if (typeof config === 'undefined') return false
// If the config is a boolean, use it directly.
if (typeof config === 'boolean') return config
// If the config is a string, it must be 'incremental' to enable partial
// prerendering.
if (config === 'incremental' && appConfig.experimental_ppr === true) {
return true
}
return false
}
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