Repro example for coverage bug

[ChristopherDedominici]

I believe there is a bug in how we generate the coverage data.
To validate this, I created a test using vitest and applied the same logic in a test contract.
When running vitest and comparing the results with the hardhat coverage, there is a mismatch in:

• percentage of executed lines

• uncovered lines

  See coverage report here:

How to repro:

• checkout the branch of this PR
• cd v-next/example-project
• run pnpm i && pnpm clean && pnpm build
• run pnpm hardhat test solidity contracts/Coverage.t.sol --coverage to run the hardhat coverage
• run pnpm vitest run vitest-example/index.test.js --coverage to run the vitest coverage

[changeset-bot]

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[github-actions]

hardhat

Total size of the bundle: 235M
Total number of dependencies (including transitive): 47

List of dependencies (sorted by size)

229M	total
35M	@nomicfoundation/edr-linux-x64-musl
35M	@nomicfoundation/edr-linux-x64-gnu
32M	@nomicfoundation/edr-linux-arm64-musl
32M	@nomicfoundation/edr-linux-arm64-gnu
24M	@nomicfoundation/edr-win32-x64-msvc
24M	@nomicfoundation/edr-darwin-x64
20M	@nomicfoundation/edr-darwin-arm64
7.3M	@sentry/core
5.2M	zod
2.7M	micro-eth-signer
1.9M	@noble/curves
1.7M	undici
1.2M	@noble/hashes
984K	@nomicfoundation/hardhat-utils
864K	@streamparser/json
624K	micro-packed
592K	tsx
548K	@nomicfoundation/hardhat-errors
492K	@scure/bip39
464K	@nomicfoundation/edr
452K	fast-equals
408K	json-stream-stringify
368K	ethereum-cryptography
332K	@streamparser/json-node
320K	enquirer
320K	@nomicfoundation/hardhat-zod-utils
288K	semver
200K	ws
180K	chokidar
176K	get-tsconfig
168K	@scure/base
160K	esbuild
136K	adm-zip
96K	@scure/bip32
92K	chalk
72K	@nomicfoundation/solidity-analyzer
68K	debug
60K	readdirp
56K	rfdc
48K	ansi-colors
44K	resolve.exports
40K	resolve-pkg-maps
36K	p-map
24K	strip-ansi
24K	env-paths
24K	ansi-regex
20K	ms

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​vitest/​coverage-istanbul@​3.2.4
	vitest@​3.2.4

View full report