Support excluding files from dist

[cjpearson]

Hi, is it possible to exclude files matching a certain pattern from the final build? In my case, we have .test.ts files in the same directory as composables and both the composables and test files are transpiled 1:1 to the output dir.

[cjpearson]

The current workaround is to use a build:done hook to clean the output directory

  hooks: {
    'build:done'(context) {
      const outDir = context.options.outDir

      // Remove test files from final build output
      context.buildEntries
        .filter((entry) => /\.test(\.d\.ts|\.js|\.mjs)/.test(entry.path))
        .forEach((entry) => {
          return rm(join(outDir, entry.path))
        })
    },
  },