in src/typescript/ast-utils.ts [172:190]
export function countNakedNewlines(str: string) {
let ret = 0;
for (const s of scanText(str, 0, str.length).filter((r) => r.type === 'other' || r.type === 'blockcomment')) {
if (s.type === 'other') {
// Count newlines in non-comments
for (let i = s.pos; i < s.end; i++) {
if (str[i] === '\n') {
ret++;
}
}
} else {
// Discount newlines at the end of block comments
if (s.hasTrailingNewLine) {
ret--;
}
}
}
return ret;
}