DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
48 lines
No EOL
2.6 KiB
Text
48 lines
No EOL
2.6 KiB
Text
// In output: export mode, the build id is added to the start of the HTML
|
|
// document, directly after the doctype declaration. During a prefetch, the
|
|
// client performs a range request to get the build id, so it can check whether
|
|
// the target page belongs to the same build.
|
|
//
|
|
// The first 64 bytes of the document are requested. The exact number isn't
|
|
// too important; it must be larger than the build id + doctype + closing and
|
|
// ending comment markers, but it doesn't need to match the end of the
|
|
// comment exactly.
|
|
//
|
|
// Build ids are 21 bytes long in the default implementation, though this
|
|
// can be overridden in the Next.js config. For the purposes of this check,
|
|
// it's OK to only match the start of the id, so we'll truncate it if exceeds
|
|
// a certain length.
|
|
const DOCTYPE_PREFIX = '<!DOCTYPE html>' // 15 bytes
|
|
;
|
|
const MAX_BUILD_ID_LENGTH = 24;
|
|
// Request the first 64 bytes. The Range header is inclusive of the end value.
|
|
export const DOC_PREFETCH_RANGE_HEADER_VALUE = 'bytes=0-63';
|
|
function escapeBuildId(buildId) {
|
|
// If the build id is longer than the given limit, it's OK for our purposes
|
|
// to only match the beginning.
|
|
const truncated = buildId.slice(0, MAX_BUILD_ID_LENGTH);
|
|
// Replace hyphens with underscores so it doesn't break the HTML comment.
|
|
// (Unlikely, but if this did happen it would break the whole document.)
|
|
return truncated.replace(/-/g, '_');
|
|
}
|
|
export function insertBuildIdComment(originalHtml, buildId) {
|
|
if (// Skip if the build id contains a closing comment marker.
|
|
buildId.includes('-->') || // React always inserts a doctype at the start of the document. Skip if it
|
|
// isn't present. Shouldn't happen; suggests an issue elsewhere.
|
|
!originalHtml.startsWith(DOCTYPE_PREFIX)) {
|
|
// Return the original HTML unchanged. This means the document will not
|
|
// be prefetched.
|
|
// TODO: The build id comment is currently only used during prefetches, but
|
|
// if we eventually use this mechanism for regular navigations, we may need
|
|
// to error during build if we fail to insert it for some reason.
|
|
return originalHtml;
|
|
}
|
|
// The comment must be inserted after the doctype.
|
|
return originalHtml.replace(DOCTYPE_PREFIX, DOCTYPE_PREFIX + '<!--' + escapeBuildId(buildId) + '-->');
|
|
}
|
|
export function doesExportedHtmlMatchBuildId(partialHtmlDocument, buildId) {
|
|
// Check whether the document starts with the expected buildId.
|
|
return partialHtmlDocument.startsWith(DOCTYPE_PREFIX + '<!--' + escapeBuildId(buildId) + '-->');
|
|
}
|
|
|
|
//# sourceMappingURL=output-export-prefetch-encoding.js.map |