options.md

Jest Options :

collectCoverage : Indicates whether the coverage information should be collected while executing the test.

collectCoverageFrom : An array of glob patterns indicating a set of files for which coverage information should be collected.

coverageDirectory : The directory where Jest should output its coverage files.

coveragePathIgnorePatterns : An array of regular expression pattern strings that are matched against all file paths before executing the test.

coverageReports : A list of reporter names that Jest uses when writing coverage reports.

{
	...
	"jest": {
		"collectCoverage": true,
		"coverageDirectory": "reports",
		"coveragePathIgnorePatters": ["/node_modules/"],
		"coverageReports": ['html'],
		collecCoverageFrom: ['**/*.{js,jsx}']
	}
	...
}

see more about jest options.

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