Visual Studio Code-compatible regular expression to add all missing import extensions

add-missing-import-extensions.txt

# Find
import\s(([^;]|\n)*)\sfrom\s(['"])(\.{1,2}\/.*)(?<!\.js)(?<!\.(css|pdf|png|jpg|jsx|mjs|mp3|mp4|svg|ttf))(?<!\.(avif|json|webm|webp|woff))(?<!\.woff2)(['"]);

# Replace with
import $1 from $3$4.js$7;

Excellent thanks, it also works well for export 👍

Thanks, this saved a lot of time

Here's a version that works with @ imports too:

import\s(([^;]|\n)*)\sfrom\s(['"])(\.{1,2}\/.*|@[^\/]*\/?.*)(?<!\.js)(?<!\.(css|pdf|png|jpg|jsx|mjs|mp3|mp4|svg|ttf))(?<!\.(avif|json|webm|webp|woff))(?<!\.woff2)(['"]);

Replace expression is same:

import $1 from $3$4.js$7;