importly/s/aspects/utilities/unix-normalize.ts

importly generates import maps

export function unixNormalize(path: string) {
	// using vector in place of stack
	let v = []
	let n = path.length
	let ans = ""
	for (let i = 0; i < n; i++) {
		let dir = ""
		// forming the current directory.
		while (i < n && path[i] != "/") {
			dir += path[i]
			i++
		}
		// if ".." , we pop.
		if (dir == "..") {
			if (v.length > 0) v.pop()
		} else if (dir == "." || dir == "") {
			// do nothing (added for better understanding.)
		} else {
			// push the current directory into the vector.
			v.push(dir)
		}
	}
	// forming the ans
	for (let i of v) {
		ans += "/" + i
	}
	// vector is empty
	if (ans == "") return "/"
	return ans
}