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a guest Aug 20th, 2019 74 Never
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  1. const fs = require("fs")
  2.  
  3. const regExp = /function (.+)(\(.+\))(\{.+\})/gms
  4.  
  5. fs.readFile("./test2.js", (err, cnt) => {
  6.     console.log(cnt.toString().replace(regExp, "const $1 = $2 => $3"))
  7. })
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