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Emacsで、node.jsのrequire()にカーソルがあるとき、定義元へ飛ぶ (ffap)

Last updated at Posted at 2012-11-03

node.jsには、require.resolve という、ライブラリのパスを返す関数があるので、
Emacsから使うと便利。

Emacsに標準で入っているffap.el は、カーソル位置の文字からファイルを探して開くためのAPIを提供していて、簡単に設定できる。

(defun ffap-nodejs (name)
  (shell-command-to-string
   (format "node -e 'try { require(\"util\").print(require.resolve(\"%s\")) } catch(e) {}'"
           name)))

(add-to-list 'ffap-alist '(js3-mode . ffap-nodejs))
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