vendors/execa.js/parseCommand
var parseCommand = (command) => {
  const tokens = [];
  for (const token of command.trim().split(SPACES_REGEXP)) {
    const previousToken = tokens[tokens.length - 1];
    if (previousToken && previousToken.endsWith("\\")) {
      tokens[tokens.length - 1] = `${previousToken.slice(0, -1)} ${token}`;
    } else {
      tokens.push(token);
    }
  }
  return tokens;
};