Monocart

[MicahMaphet]

Description 🪶

Use monocart for coverage because it supports ESM.

Changelog 📝

• installed monocart globally and in crypto-rpc
• mcr.config.js config files in packages
• coverage-builder.js file for standardizing a config
• switch from .mocharc.yml to .mocharc.json
• use require imports in bitcore-client tests to import bitcore-node files

Testing Notes 🥼

The coverage should all be passing for this PR with the thresholds just a little below the current coverage.

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Checklist

• I have read CONTRIBUTING.md and verified that this PR follows the guidelines and requirements outlined in it.

[Copilot]

🟡 Changes recommended

As written, Mocha discovery/coverage setup is likely broken due to an invalid extension configuration and an ESM/CommonJS mismatch in coverage-builder.js that would prevent mcr.config.js from loading.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Switches the monorepo’s JS/TS test coverage tooling from NYC/c8 to Monocart Coverage Reports (mcr) to better support ESM packages while standardizing coverage configuration across packages.

Changes:

• Replaced nyc/c8 coverage invocations with mcr mocha ... across multiple package test scripts.
• Added per-package mcr.config.js files plus a shared coverage-builder.js to centralize thresholds/filtering.
• Migrated Mocha configuration from .mocharc.yml to .mocharc.json and updated a few tests (timeouts + require-based imports for built artifacts).

File summaries

File	Description
packages/crypto-wallet-core/package.json	Switch test script from nyc to mcr.
packages/crypto-wallet-core/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/crypto-wallet-core/.nycrc.yml	Remove NYC config.
packages/crypto-wallet-core/.mocharc.yml	Remove YAML Mocha config.
packages/crypto-wallet-core/.mocharc.json	Add JSON Mocha config for recursive test discovery.
packages/crypto-rpc/package.json	Switch docker test coverage to mcr, replace c8 with Monocart dependency.
packages/crypto-rpc/mcr.config.js	Add ESM Monocart coverage config.
packages/crypto-rpc/coverage-builder.js	Add package-local coverage builder helper (ESM).
packages/crypto-rpc/.mocharc.yml	Remove YAML Mocha config.
packages/crypto-rpc/.mocharc.json	Add JSON Mocha config.
packages/bitcore-wallet-service/package.json	Switch test script from nyc to mcr.
packages/bitcore-wallet-service/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-wallet-service/.nycrc.yml	Remove NYC config.
packages/bitcore-wallet-service/.mocharc.yml	Remove YAML Mocha config.
packages/bitcore-wallet-service/.mocharc.json	Add JSON Mocha config.
packages/bitcore-wallet-client/test/api.test.ts	Increase suite timeout.
packages/bitcore-wallet-client/package.json	Switch test script from nyc to mcr.
packages/bitcore-wallet-client/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-wallet-client/.nycrc.yml	Remove NYC config.
packages/bitcore-wallet-client/.mocharc.yml	Remove YAML Mocha config.
packages/bitcore-wallet-client/.mocharc.json	Add JSON Mocha config.
packages/bitcore-tss/package.json	Switch mocha coverage script from nyc to mcr.
packages/bitcore-tss/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-tss/.nycrc.yml	Remove NYC config.
packages/bitcore-tss/.mocharc.json	Add JSON Mocha config.
packages/bitcore-p2p/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-p2p/.nycrc.yml	Remove NYC config.
packages/bitcore-p2p-doge/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-p2p-doge/.nycrc.yml	Remove NYC config.
packages/bitcore-p2p-cash/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-p2p-cash/.nycrc.yml	Remove NYC config.
packages/bitcore-node/package.json	Switch test script from nyc to mcr; simplify unit/integration mocha invocations.
packages/bitcore-node/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-node/.nycrc.yml	Remove NYC config.
packages/bitcore-node/.mocharc.yml	Remove YAML Mocha config.
packages/bitcore-node/.mocharc.json	Add JSON Mocha config.
packages/bitcore-mnemonic/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-mnemonic/.nycrc.yml	Remove NYC config.
packages/bitcore-logging/package.json	Switch test script from nyc to mcr.
packages/bitcore-logging/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-logging/.nycrc.yml	Remove NYC config.
packages/bitcore-logging/.mocharc.yml	Remove YAML Mocha config.
packages/bitcore-logging/.mocharc.json	Add JSON Mocha config.
packages/bitcore-lib/test/transaction/transaction.js	Adjust timeout configuration for Taproot vector tests.
packages/bitcore-lib/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-lib/.nycrc.yml	Remove NYC config.
packages/bitcore-lib-ltc/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-lib-ltc/.nycrc.yml	Remove NYC config.
packages/bitcore-lib-doge/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-lib-doge/.nycrc.yml	Remove NYC config.
packages/bitcore-lib-cash/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-lib-cash/.nycrc.yml	Remove NYC config.
packages/bitcore-client/test/unit/wallet.test.ts	Switch imports to require for built bitcore-node artifacts; add wallet cleanup.
packages/bitcore-client/package.json	Switch test script from nyc (tsx runtime) to mcr (compiled JS).
packages/bitcore-client/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-client/.nycrc.yml	Remove NYC config.
packages/bitcore-client/.mocharc.yml	Remove YAML Mocha config.
packages/bitcore-client/.mocharc.json	Add JSON Mocha config.
packages/bitcore-cli/package.json	Switch test script from nyc to mcr.
packages/bitcore-cli/mcr.config.js	Add Monocart coverage configuration using shared builder.
packages/bitcore-cli/.nycrc.yml	Remove NYC config.
packages/bitcore-cli/.mocharc.yml	Remove YAML Mocha config.
packages/bitcore-cli/.mocharc.json	Add JSON Mocha config.
packages/bitcore-build/index.js	Update gulp test task to run mcr mocha.
package.json	Replace nyc dev dependency with monocart-coverage-reports.
package-lock.json	Lockfile updates reflecting dependency/tooling changes.
coverage-builder.js	Add shared Monocart coverage builder helper at repo root.

Review details

Suppressed comments (1)

coverage-builder.js:52

• export default is ESM-only; in a CommonJS root package this will throw at load time. Export via module.exports (and keep a .default alias since callers use require(...).default).

export default coverageBuilder;

• Files reviewed: 66/69 changed files
• Comments generated: 12
• Review effort level: Lite

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