test(deps): migrate from standard to eslint linter

[MikeMcC399]

• relates to issue devDependencies review #164

Situation

standard@13.1.0 released on Jul 21, 2019 is configured in this repo. The latest version is standard@17.1.2, released one year ago in Sep 2024, and which uses outdated dependencies, such as eslint@8.57.1 with end-of-life on Oct 5, 2024.

prettier-standard@8.0.1 released on Apr 5, 2018 is configured in this repo. The latest version is prettier-standard@16.3.0, released 5 years ago in Apr 2020, and which uses outdated dependencies, such as eslint@6.8.0 with end-of-life on Nov 8, 2020, and multiple unfixable vulnerabilities:

15 vulnerabilities (4 low, 3 moderate, 6 high, 2 critical)

Assessment

The above two dependencies need to be considered together, since they are interdependent. They also each depend on different versions of ESlint.

• standard is a legacy ESlint-based linter with no configuration options
• prettier-standard is a formatter based on using prettier and standard. This repo has not defined any prettier configuration and it uses a non-standard set of configuration defaults.

Change

Remove standard and prettier-standard, and replace with supported npm packages:

• eslint@9.34.0
• eslint-plugin-mocha@11.1.0
• @stylistic/eslint-plugin@5.3.1
• globals@16.3.0

For scripts:

• migrate script lint from standard to eslint
• remove scripts prelint and pretty

Apply npx eslint --fix, after setting rules as below, to autofix linting.

Rules

Apply a rule strategy based on each linter's recommended configuration:

• pluginJs.configs.recommended
• mochaPlugin.configs.recommended
• stylistic.configs.recommended

In case of linting errors, add rules aligned to linting choices in https://github.com/cypress-io/cypress

Rule	Setting	Cypress reference
mocha/max-top-level-suites	off	packages/eslint-config
mocha/no-mocha-arrows	off	packages/eslint-config
mocha/no-setup-in-describe	off	packages/eslint-config
@stylistic/arrow-parens	['error', 'always']	npm/eslint-plugin-dev
@stylistic/comma-dangle	['error', 'always-multiline']	packages/eslint-config
@stylistic/space-before-function-paren	['error', 'always']	packages/eslint-config

Verify

git clean -xfd
npm ci
npm run lint
npm test

Reference

• cypress-io > packages/eslint-config

with fallback to:

• cypress-io > npm/eslint-plugin-dev

[MikeMcC399]

@AtofStryker

This PR migrates to a current ESLint linting framework and, in doing so, knocks 11 vulnerabilities off the list, including 2 critical. It however still leaves:

43 vulnerabilities (4 low, 10 moderate, 11 high, 18 critical)

even when it's done, so there will be more PRs after this one!

Please review and merge, as you have kindly done previously!

[github-actions]

🎉 This PR is included in version 2.2.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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