Function handler

packages/vite/src/node/optimizer/rolldownDepPlugin.ts:173–197

(id, importer, options)

      resolveId: {
        filter: { id: allExternalTypesReg },
        async handler(id, importer, options) {
          const kind = options.kind
          // if the prefix exist, it is already converted to `import`, so set `external: true`
          if (id.startsWith(convertedExternalPrefix)) {
            return {
              id: id.slice(convertedExternalPrefix.length),
              external: 'absolute',
            }
          }

          const resolved = await resolve(id, importer, kind)
          if (resolved) {
            // `resolved` can be javascript even when `id` matches `allExternalTypes`
            // due to cjs resolution (e.g. require("./test.pdf") for "./test.pdf.js")
            // or package name (e.g. import "some-package.pdf")
            if (JS_TYPES_RE.test(resolved)) {
              return {
                // normalize to \\ on windows for esbuild/rolldown behavior difference: https://github.com/sapphi-red-repros/rolldown-esbuild-path-normalization
                id: isWindows ? resolved.replaceAll('/', '\\') : resolved,
                external: false,
              }
            }
            return resolveAssets(resolved, kind)
          }
        },
      },
      load: {
        filter: {