elm-make-readable

elm-make-readable.mjs

import fs from 'fs/promises';
const rules = [
  {
    rule: /var ([^=]+)( = F\d\([^f]+function)[^(]\(/gmi,
    replacement: `var $1$2 __$1( `,
  },
  {
    rule: /(\sA\d\([\s]+)([^,]+)(,[\s]+)(function[^(]+)\(/gm,
    replacement: `$1$2$3$4___$2(`,
  },
];

const inputPath = process.argv[2];
const outputPath = process.argv[3];
const inputContents = await fs.readFile(inputPath, 'utf8');
const outputContents = rules.reduce(
  (currentString, {rule, replacement}) => currentString.replace(rule, replacement),
  inputContents
);
await fs.writeFile(outputPath, outputContents);

Quoting Janiczek from Slack: you use this with:

node ./elm-make-readable.mjs in.js out.js

As @lydell observed, this might produce syntax errors and is best replaced by

       .replace(/var ([^=]+)( = F\d\([^f]+function)[^(]\(/gim, `var $1$2 __$1( `)
       .replace(
         /(\sA\d\([\s]+)([^,]+)(,[\s]+)(function[^(]+)\(/gm,
         (_, $1, $2, $3, $4) =>
           `${$1}${$2}${$3}${$4}___${$2.replace(/\./g, "_")}(`,
       )