Function which

out/cli.cjs:1157–1190

(cmd, opt, cb)

      };
    };
    var which = (cmd, opt, cb) => {
      if (typeof opt === "function") {
        cb = opt;
        opt = {};
      }
      if (!opt)
        opt = {};
      const { pathEnv, pathExt, pathExtExe } = getPathInfo(cmd, opt);
      const found = [];
      const step = (i3) => new Promise((resolve, reject) => {
        if (i3 === pathEnv.length)
          return opt.all && found.length ? resolve(found) : reject(getNotFoundError(cmd));
        const ppRaw = pathEnv[i3];
        const pathPart = /^".*"$/.test(ppRaw) ? ppRaw.slice(1, -1) : ppRaw;
        const pCmd = path5.join(pathPart, cmd);
        const p4 = !pathPart && /^\.[\\\/]/.test(cmd) ? cmd.slice(0, 2) + pCmd : pCmd;
        resolve(subStep(p4, i3, 0));
      });
      const subStep = (p4, i3, ii) => new Promise((resolve, reject) => {
        if (ii === pathExt.length)
          return resolve(step(i3 + 1));
        const ext = pathExt[ii];
        isexe(p4 + ext, { pathExt: pathExtExe }, (er2, is) => {
          if (!er2 && is) {
            if (opt.all)
              found.push(p4 + ext);
            else
              return resolve(p4 + ext);
          }
          return resolve(subStep(p4, i3, ii + 1));
        });
      });
      return cb ? step(0).then((res) => cb(null, res), cb) : step(0);
    };
    var whichSync = (cmd, opt) => {
      opt = opt || {};
      const { pathEnv, pathExt, pathExtExe } = getPathInfo(cmd, opt);