yahoo / yahoo/serialize-javascript

Unexpected regular expression

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Dominant language
JavaScript
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Merged PRs (30d)
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Description

Input:

const options = {
      file: 'test5.js',
      input: '/******/ function hello(a) {console.log(a)}',
      terserOptions: {
        output: {
          comments: 'all',
        },
      },
      extractComments: {
        condition: 'should be extracted',
        filename: (file) => file.replace(/(\.\w+)$/, '.license$1'),
        banner: (licenseFile) =>
          `License information can be found in ${licenseFile}`,
      },
    }

After serialize we use

const options = new Function(
      'exports',
      'require',
      'module',
      '__filename',
      '__dirname',
      `'use strict'\nreturn ${options}`
    )(exports, require, module, __filename, __dirname);

And code in Function throw SyntaxError: Unexpected regular expression

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the provided serialize-then-Function example and inspect how the options object, regular expression, and function are serialized. Confirm the fix by ensuring this input no longer throws SyntaxError: Unexpected regular expression, then add or update a regression test if the repository has coverage for this entry point.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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