less / less/less.js

if env.paths is a string you get a misleading error

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bug low priority
Dominant language
JavaScript
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Merged PRs (30d)
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Description

Callback is never executed from the call to parse(). Same input parses correctly by @1.7.0 so it looks like a regression of some sort.

Stepping through revealed an exception caught at line 27 of input-visitor.js:

error: TypeError: Function.prototype.apply: Arguments list has wrong type
arguments: Array[0]
message: undefined
stack: undefined
type: "apply_wrong_args"
__proto__: TypeError

this.importCount is set to 1 at this point, so no termination. No further exceptions when continued from this point.

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Research direction

Reproduce the issue through the call to parse() using an env.paths string, then inspect input-visitor.js around line 27 where the exception is caught. Compare the behavior with version 1.7.0 and trace why the callback is not executed. Done means the input parses correctly and no misleading apply_wrong_args error is produced.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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