Executable Command Resolver (src/local-agent-command.ts)

Resolves a command name to an absolute executable path by searching PATH and checking file executability, cross-platform (handles Windows PATHEXT). Reuse for CLI tools needing to locate binaries before spawning.

// Source: https://github.com/Waishnav/devspace | License: MIT | Copyright 2026 Waishnav
// Provided via justclaw.it.com; keep this notice with the code.
import { accessSync, constants, statSync } from "node:fs";
import { delimiter, resolve } from "node:path";

export function resolveExecutableCommand(
  command: string,
  env: NodeJS.ProcessEnv,
): string | undefined {
  if (!command) return undefined;
  if (command.includes("/") || command.includes("\\")) {
    return isExecutableFile(command) ? command : undefined;
  }
  const path = env.PATH;
  if (!path) return undefined;
  const extensions = process.platform === "win32"
    ? ["", ...(env.PATHEXT ?? ".COM;.EXE;.BAT;.CMD").split(";").filter(Boolean)]
    : [""];
  for (const directory of path.split(delimiter)) {
    if (!directory) co

... (truncated -- full source via MCP)