perf: memoize filetree computation (#490)

Jacky Zhao

2023-09-20 48452231d5fcd14ef218928bde9ae7e5bc745f4a

 quartz/plugins/transformers/ofm.ts

@@ -400,6 +400,10 @@
          return (tree: Root, file) => {
            const base = pathToRoot(file.data.slug!)
            findAndReplace(tree, tagRegex, (_value: string, tag: string) => {
              // Check if the tag only includes numbers
              if (/^\d+$/.test(tag)) {
                return false
              }
              tag = slugTag(tag)
              if (file.data.frontmatter && !file.data.frontmatter.tags.includes(tag)) {
                file.data.frontmatter.tags.push(tag)