jest --silent --no-silent no longer negates silent flag

💥 Regression Report

Our package.json script runs jest with the --silent flag. Previously I was able to override this by passing --no-silent flag when running the script.

npm run test -- --no-silent

Last working version

Worked up to version: ~24.8.0 (specifically 24.8.0 is installed)

Stopped working in version: ~25.1.0

To Reproduce

1. Create package.json script:

"test:silent": "jest --silent --config jest.config.js",
"test:no-silent": "jest --no-silent --config jest.config.js",
"test:negate:silent": "npm run test:silent -- --no-silent",

1. Add a console.log statement to a test
2. Run npm run test:silent and observe log statement isn’t logged (expected)
3. Run npm run test:no:silent and observe log statement is logged (expected)
4. Run npm run test:silent -- --no-silent and observe log statement isn’t logged (regression, this used to work)

Expected behavior

Expect no-silent to negate --silent flag.

Link to repl or repo (highly encouraged)

https://repl.it/repls/DownrightTrivialCalculator

Switch to version 24 to see it work. Basically run the test:negate:silent script and it will work with version 24 but not with version 25.

Issues without a reproduction link are likely to stall.

Run npx envinfo --preset jest

Paste the results here:

  System:
    OS: macOS Mojave 10.14.6
    CPU: (4) x64 Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz
  Binaries:
    Node: 8.17.0 - ~/local/n/n/versions/node/8.17.0/bin/node
    Yarn: 1.19.1 - /usr/local/bin/yarn
    npm: 6.13.4 - ~/local/n/n/versions/node/8.17.0/bin/npm
  npmPackages:
    jest: ~25.1.0 => 25.1.0

[bcoe]

@SimenB you should be able to address this by passing a configuration setting to yargs, we’ve made this behavior more explicit, see:

https://github.com/yargs/yargs-parser#duplicate-arguments-array

Set duplicate-arguments-array to false:

~yargs.parserOptions({‘duplicate-arguments-array’: false});~

Edit: yargs(process.argv.slice(2)).parserConfiguration({}), I should learn how to use yargs.

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