refactor: remove babel transpilation

This removes the babel transpiler and refactors the code to be
compatible with commonjs imports.

Test: npm test
Test: echo "foo\nfoobar\nbar" | ./src/cli.js grep 'foo'
Test: echo "foo\nfoobar\nbar" | ./src/cli.js sed 's/foo/bar/'
Test: ./src/cli.js grep 'foo' ~/foobartest.txt
Test: ./src/cli.js sed 's/foo/bar/' ~/foobartest.txt

Author: nfischer

.github/workflows/main.yml

@@ -24,7 +24,6 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - run: npm install
       - run: npm run test
-      - run: npm run build
       - run: npm run check-node-support
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v4

.mocharc.js

@@ -1,5 +1,4 @@
 // https://mochajs.org/#configuring-mocha-nodejs
 module.exports = {
-  require: ['babel-register'], // Transpile files using Babel
   recursive: true,
 };