Using an equal sign (or not) with an array option changes the value
Open
Nobody has claimed this yet.
bug
- Dominant language
- JavaScript
- Stars
- 519
- Forks
- 129
- Avg merge
- 1h 34m
- Merged PRs (30d)
- 1
Description
When using the following code:
const yargs = require('yargs')
console.log(yargs.option('opt', { array: true }).parse().opt)
Using a = or not changes the parsed value, which is quite confusing:
$ node yargs.js --opt=""
[]
$ node yargs.js --opt ""
[ '' ]
Using yargs 16.2.0 on Node 15.6.0.
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Research direction
Reproduce the two commands in the provided yargs.js example, comparing --opt="" with --opt "". Start by tracing the yargs-parser option parsing entry point and identify the intended behavior for an empty array value. Add regression coverage for both forms and verify that the resulting values follow the agreed behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, node.js
- Domain
- cli
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100