Mountain/ProcessManagement/NodeResolver/
TryNvm.rs

1#![allow(non_snake_case)]
2
3//! nvm lookup. `NVM_BIN` wins (set inside an nvm-sourced shell). Fallback
4//! walks `$NVM_DIR/versions/node` and picks the lexicographically largest
5//! version (rough proxy for "latest installed").
6
7use std::path::PathBuf;
8
9use crate::ProcessManagement::NodeResolver::{NodeExecutableName, NodeSource, ResolvedNode};
10
11pub fn Fn() -> Option<ResolvedNode::Struct> {
12	if let Ok(NvmBin) = std::env::var("NVM_BIN") {
13		let Candidate = PathBuf::from(NvmBin).join(NodeExecutableName::Fn());
14		if Candidate.exists() {
15			return Some(ResolvedNode::Struct { Path:Candidate, Source:NodeSource::Enum::Nvm });
16		}
17	}
18
19	let NvmDir = std::env::var("NVM_DIR").ok().or_else(|| {
20		std::env::var("HOME")
21			.ok()
22			.map(|H| PathBuf::from(H).join(".nvm").to_string_lossy().into_owned())
23	})?;
24
25	let VersionsDirectory = PathBuf::from(&NvmDir).join("versions").join("node");
26	let Entries = std::fs::read_dir(&VersionsDirectory).ok()?;
27
28	let mut BestCandidate:Option<PathBuf> = None;
29	for Entry in Entries.flatten() {
30		let NodePath = Entry.path().join("bin").join(NodeExecutableName::Fn());
31		if !NodePath.exists() {
32			continue;
33		}
34		BestCandidate = match BestCandidate {
35			Some(Existing) if Existing > NodePath => Some(Existing),
36			_ => Some(NodePath),
37		};
38	}
39
40	BestCandidate.map(|Path| ResolvedNode::Struct { Path, Source:NodeSource::Enum::Nvm })
41}
Mountain/ProcessManagement/NodeResolver/TryNvm.rs

Mountain/ProcessManagement/NodeResolver/
TryNvm.rs
