vercel/next.js · error

Lockfile was successfully patched, please run "npm install"

Error message

Lockfile was successfully patched, please run "npm install" to ensure @next/swc dependencies are downloaded

What it means

After rewriting the lockfile with the missing @next/swc package entries, patchIncorrectLockfile warns that npm install must be run so the newly referenced native binary packages actually download; otherwise the SWC binding remains unresolved.

Source

Thrown at packages/next/src/lib/patch-incorrect-lockfile.ts:168

    )

    for (let i = 0; i < pkgsData.length; i++) {
      const pkg = missingSwcPkgs[i]
      const pkgData = pkgsData[i]

      if (shouldPatchDependencies) {
        patchDependency(pkg, pkgData)
      }
      if (shouldPatchPackages) {
        patchPackage(`${pkgPrefix}${pkg}`, pkgData)
      }
    }

    writeFileSync(
      lockfilePath,
      JSON.stringify(lockfileParsed, null, 2) + endingNewline
    )
    Log.warn(
      'Lockfile was successfully patched, please run "npm install" to ensure @next/swc dependencies are downloaded'
    )
  } catch (err) {
    Log.error(
      `Failed to patch lockfile, please try uninstalling and reinstalling next in this workspace`
    )
    console.error(err)
  }
}

View on GitHub (pinned to 0eb3775416)

Solutions

1. Run `npm install` to download the @next/swc dependencies now that the lockfile is patched.

When it happens

Trigger: Thrown at packages/next/src/lib/patch-incorrect-lockfile.ts:168 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of vercel/next.js@0eb3775416 (2026-08-19). Data as JSON: /api/errors/b0e7b0651b899bd0. Report an issue: GitHub.