106 lines
2.9 KiB
VimL
106 lines
2.9 KiB
VimL
" https://gist.github.com/romainl/1f50c55b0ee92e5420de51e6c4b38491
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setlocal includeexpr=RESOLVE(v:fname)
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function! RESOLVE(module) abort
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let built_ins = [
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\ "assert",
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\ "async_hooks",
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\ "child_process",
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\ "cluster",
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\ "crypto",
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\ "dns",
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\ "domain",
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\ "events",
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\ "fs",
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\ "http",
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\ "http2",
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\ "https",
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\ "inspector",
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\ "net",
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\ "os",
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\ "path",
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\ "perf_hooks",
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\ "punycode",
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\ "querystring",
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\ "readline",
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\ "stream",
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\ "string_decoder",
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\ "tls",
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\ "tty",
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\ "dgram",
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\ "url",
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\ "util",
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\ "v8",
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\ "vm",
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\ "zlib" ]
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" There's no source file for built-in node modules.
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" Example: var http = require('http');
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if index(built_ins, a:module) != -1
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return 0
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endif
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" Handling absolute and relative paths.
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" Example: var foo = require('./foo.js');
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if a:module =~ '^\/' || a:module =~ '^\.\{1,2}\/'
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let root = fnamemodify(substitute(finddir("node_modules", ".;"), '/node_modules', '', ''), ':p:h:h')
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if a:module =~ '^\.\{1,2}\/'
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let module = substitute(a:module, '^\.\{1,2}\/', '', '')
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endif
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let filename = 0
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try
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let filename = findfile(module, root)
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catch
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try
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let filename = findfile(module . ".js", root)
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catch
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try
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let filename = findfile(module . "/index.js", root)
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catch
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let filename = 0
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endtry
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endtry
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endtry
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return filename
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endif
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" Handling vendored-in modules.
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" Example: var _ = require('lodash');
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for dir in NODE_MODULES_PATHS()
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" require('module') => node_modules/module/package.json#main => node_modules/module/**/...
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if filereadable(dir . "/" . a:module . "/package.json")
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let package = json_decode(join(readfile(dir . "/" . a:module . "/package.json")))
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return dir . "/" . a:module . "/" . substitute(get(package, "main", "index.js"), '^\.\{1,2}\/', '', '')
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endif
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" require('module') => node_modules/module/index.js
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if filereadable(dir . "/" . a:module . "/index.js")
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return dir . "/" . a:module . "/index.js"
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endif
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" require('module') => node_modules/module.js
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if filereadable(dir . "/" . a:module . ".js")
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return dir . "/" . a:module . ".js"
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endif
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endfor
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" well, well, well
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return 0
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endfunction
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function! NODE_MODULES_PATHS() abort
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" node_modules/
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let node_modules = finddir("node_modules", ".;")
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" node_modules/foo/node_modules/
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let basic_dirs = extend([node_modules], globpath(node_modules, "*/node_modules", 1, 1))
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" node_modules/@foo/bar/node_modules/
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let all_dirs = extend(basic_dirs, globpath(node_modules, "@*/*/node_modules", 1, 1))
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return all_dirs
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endfunction
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