Problem with let in safari

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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

Reproduce the Meteor application’s production build with the --production flag and inspect the generated code shown in the report. Compare the Safari failure with the Chrome and Firefox results, then trace why a let declaration remains in the ES5 output. Done means the transpilation behavior is explained and a focused fix or confirmed upstream limitation is documented.

Written by the indexing model from the issue text.

Description

Hi, im having some trouble with transpiling my code to ES5. When i build with --production flag my meteor application it runs OK on chrome and firefox, but when i run it on safari it returns this error:
"SyntaxError: Cannot declare a let variable twice: 'e'."
In this place of the code ( which is some meteor code )
image

I know this error is a bug already reported from safari, but my question is: the let statement is a ES2015 feature, why is it not being transpiled to a var?

Dominant language
JavaScript
Stars
3
Forks
4
No merged PRs in 30d

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