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Cannot read property 'value' of undefined

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
javascript
Domain
build-system

Research direction

Run the reproduction steps in the issue from the tape repository, comparing yarn test with dist/index.modern.js, dist/index.module.js, and dist/index.cjs in test/src/*.js. Start by locating where the failing Cannot read property 'value' of undefined error occurs and compare the generated bundles. Done means the tests pass when each of the three dist entry points is substituted.

Written by the indexing model from the issue text.

Description

I am getting some interestingly erroneous builds for code relying on AsyncIterable and AsyncIterator. Steps to reproduce:

git clone https://github.com/async-abstraction/tape
cd tape
yarn
yarn test # This works fine
sed 's/[/][s][r][c][/][i][n][d][e][x][.][j][s]/\/dist\/index.modern.js/g' -i test/src/*.js
yarn test # Works fine too
git reset --hard HEAD
sed 's/[/][s][r][c][/][i][n][d][e][x][.][j][s]/\/dist\/index.module.js/g' -i test/src/*.js
yarn test # BROKEN (Cannot read property 'value' of undefined)
git reset --hard HEAD
sed 's/[/][s][r][c][/][i][n][d][e][x][.][j][s]/\/dist\/index.cjs/g' -i test/src/*.js
yarn test # BROKEN (Cannot read property 'value' of undefined)
Dominant language
JavaScript
Stars
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Forks
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PR merge metrics
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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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