Question

我试图编写一个Vim命令来遵循js / ES6文件中的require / import引用（尊重模块解析器别名）。

如果我输入babel-node并进入REPL模式，我可以执行以下操作：

> require.resolve('~');
/properly/resolved/path

但是，如果我尝试评估相同的表达式（我需要eval来指定运行时Vim的路径），我得到：

$ babel-node -e 'console.log(require.resolve("~"))'
[eval]:1
console.log(require.resolve("./lib/webapp/lib"));
                    ^

TypeError: require.resolve is not a function
    at [eval]:1:-41
    at ContextifyScript.Script.runInThisContext (vm.js:23:33)
    at Object.runInThisContext (vm.js:95:38)
    at _eval (/usr/local/lib/node_modules/babel-cli/lib/_babel-node.js:99:23)
    at Object.<anonymous> (/usr/local/lib/node_modules/babel-cli/lib/_babel-node.js:119:16)
    at Module._compile (module.js:571:32)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)

看起来波浪线已正确解析（~指向./lib/webapp/lib）但随后插入到命令中，并且babel尝试执行该功能（由于某种原因未找到它）

我在这里做错了吗？这是一个错误吗？

Answer 1

我用一个临时文件和一些相当讨厌的vimscript解决了这个问题：

" Follow JavaScript references with proper babel (and module-resolver)
" resolution (required a git repo in the project's root)
function FollowJsReference()
  " Find the reference and yank it into the r register
  exec "normal ^f'\"ryi'"
  " Create a file at the root with the code for babel-node to resolve the
  " reference. Ideally, I'd do this with babel-node's eval, but it errors out.
  " Instead, I create a script, evaluate it then delete it.
  let s:script_content = 'console.log(require.resolve("' . @r . '"));'
  let s:create_command = 'tee `git rev-parse --show-toplevel`/___resolve.js'
  call system(s:create_command, s:script_content)
  " Run babel-node from the root dir
  let s:babel_command = 'cd `git rev-parse --show-toplevel` && babel-node ./___resolve.js'
  let s:out = system(s:babel_command)
  exec ":edit " . s:out
  " Clean up
  let s:delete_command = 'rm `git rev-parse --show-toplevel`/___resolve.js'
  call system(s:delete_command)
endfunction
nnoremap <Leader>gj :call FollowJsReference()<CR>

＆＃34; require.resolve不是一个功能＆＃34;在babel-node eval模式下

1 个答案: