fix: create deep copy of file passed into tree

Ben Schlegel

2023-09-16 fea352849c6972da4b3b8935eb2e86f6cefc76ed

 quartz/plugins/transformers/lastmod.ts

@@ -11,6 +11,11 @@
  priority: ["frontmatter", "git", "filesystem"],
}

function coerceDate(d: any): Date {
  const dt = new Date(d)
  return isNaN(dt.getTime()) ? new Date() : dt
}

type MaybeDate = undefined | string | number
export const CreatedModifiedDate: QuartzTransformerPlugin<Partial<Options> | undefined> = (
  userOpts,
@@ -27,7 +32,7 @@
            let modified: MaybeDate = undefined
            let published: MaybeDate = undefined

            const fp = path.join(file.cwd, file.data.filePath as string)
            const fp = path.posix.join(file.cwd, file.data.filePath as string)
            for (const source of opts.priority) {
              if (source === "filesystem") {
                const st = await fs.promises.stat(fp)
@@ -36,6 +41,7 @@
              } else if (source === "frontmatter" && file.data.frontmatter) {
                created ||= file.data.frontmatter.date
                modified ||= file.data.frontmatter.lastmod
                modified ||= file.data.frontmatter.updated
                modified ||= file.data.frontmatter["last-modified"]
                published ||= file.data.frontmatter.publishDate
              } else if (source === "git") {
@@ -48,9 +54,9 @@
            }

            file.data.dates = {
              created: created ? new Date(created) : new Date(),
              modified: modified ? new Date(modified) : new Date(),
              published: published ? new Date(published) : new Date(),
              created: coerceDate(created),
              modified: coerceDate(modified),
              published: coerceDate(published),
            }
          }
        },