fix(register): pass imports with import attributes through to the default loader

[pdeveltere]

Problem

Node.js 26.5.0 introduced text imports (import sql from './query.sql' with { type: 'text' }, behind --experimental-import-text, nodejs/node#62300). With @swc-node/register/esm registered, these imports crash:

Exception during run: [Error:   x Expression expected
   ,-[/app/src/queries/query.sql:2:1]
 1 | SELECT ...
   :                     ^
Caused by:
    Syntax Error] { code: 'GenericFailure' }

The resolve hook already defers to nextResolve when import attributes are present, but the load hook does not: it takes the source returned by nextLoad and compiles it with swc as TypeScript, so the raw text content is fed to the parser.

Fix

Skip the load hook when context.importAttributes.type is set, mirroring the existing behaviour of the resolve hook. The default loader then handles the module (json was already covered by the context.format check above; this also covers text and any future attribute-driven formats).

Test

Added an integrate-module test that spawns a child Node process with --experimental-import-text --import=@swc-node/register/esm-register and imports a .txt file with { type: 'text' } from a .ts entry. Skipped on Node < 26.5 (the current CI matrix of 22/24 skips it; it runs and passes on 26.5.0, and fails without the fix).

✔ text import attributes should pass through to the default loader (306.208667ms)
ℹ tests 23
ℹ pass 23
ℹ fail 0

[CLAassistant]

All committers have signed the CLA.