Cover the noodles with boiling water in a heatproof container. Cover and let stand for 6 to 8 minutes, or according to package directions, until al dente.
Drain the noodles, rinse briefly with cool water, then use kitchen shears or a sharp knife to cut here and there into shorter lengths.
While the noodles are soaking, heat the oil in a stir-fry pan. Add the garlic and sauté over medium-low heat until golden.
Add the remaining ingredients except salt; bring to a rapid simmer, then lower the heat and simmer gently for 3 minutes.
Add the cooked noodles and season with salt. Cover and let stand for 5 minutes, until the noodles have absorbed much of the coconut milk, then serve.