Docs needed for negated custom options

Lets say we have the following file

const { task, option, logger, argv } = require('just-task');
const { spawn } = require('child_process');

option('no-cache', { default: false });

task('sayhello', function() {
  logger.info(argv());
});

and we were to run npx just sayhello --no-cache, we will got the following result

[4:17:16 PM] ■ started 'sayhello'
[4:17:16 PM] ■ { _: [ 'sayhello' ],
  cache: false,
  'no-cache': false,
  noCache: false,
  '$0': 'node_modules/.bin/just' }
[4:17:16 PM] ■ finished 'sayhello' in 0.01s

if we instead run with npx just sayhello --noCache, it will then registers

[4:20:01 PM] ■ started 'sayhello'
[4:20:01 PM] ■ { _: [ 'sayhello' ],
  noCache: true,
  'no-cache': true,
  '$0': 'node_modules/.bin/just' }
[4:20:01 PM] ■ finished 'sayhello' in 0.01s

It seems this is coming from yargs parser on this issue https://github.com/yargs/yargs-parser/issues/92 which since have been solved in the current version.

Would there be plan to update the yargs dependency in the project to the current version?

Start by reviewing the custom option and argv documentation or entry points in just-task, then check the yargs-parser issue and dependency version referenced in the report. Done means the behavior of negated custom options is clearly documented and the requested dependency-update question is addressed.