test-exclude
test for inclusion or exclusion of paths using globs
Last updated 10 months ago by coreyfarrell .
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test-exclude

The file include/exclude logic used by nyc and babel-plugin-istanbul.

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Usage

const TestExclude = require('test-exclude');
const exclude = new TestExclude();
if (exclude().shouldInstrument('./foo.js')) {
    // let's instrument this file for test coverage!
}

TestExclude(options)

The test-exclude constructor accepts an options object. The defaults are taken from @istanbuljs/schema.

options.cwd

This is the base directory by which all comparisons are performed. Files outside cwd are not included.

Default: process.cwd()

options.exclude

Array of path globs to be ignored. Note this list does not include node_modules which is added separately. See @istanbuljs/schema/default-excludes.js for default list.

options.excludeNodeModules

By default node_modules is excluded. Setting this option true allows node_modules to be included.

options.include

Array of path globs that can be included. By default this is unrestricted giving a result similar to ['**'] but more optimized.

options.extension

Array of extensions that can be included. This ensures that nyc only attempts to process files which it might understand. Note use of some formats may require adding parser plugins to your nyc or babel configuration.

Default: ['.js', '.cjs', '.mjs', '.ts', '.tsx', '.jsx']

TestExclude#shouldInstrument(filename): boolean

Test if filename matches the rules of this test-exclude instance.

const exclude = new TestExclude();
exclude.shouldInstrument('index.js'); // true
exclude.shouldInstrument('test.js'); // false
exclude.shouldInstrument('README.md'); // false
exclude.shouldInstrument('node_modules/test-exclude/index.js'); // false

In this example code:

  • index.js is true because it matches the default options.extension list and is not part of the default options.exclude list.
  • test.js is excluded because it matches the default options.exclude list.
  • README.md is not matched by the default options.extension
  • node_modules/test-exclude/index.js is excluded because options.excludeNodeModules is true by default.

TestExculde#globSync(cwd = options.cwd): Array[string]

This synchronously retrieves a list of files within cwd which should be instrumented. Note that setting cwd to a parent of options.cwd is ineffective, this argument can only be used to further restrict the result.

TestExclude#glob(cwd = options.cwd): Promise<Array[string]>

This function does the same as TestExclude#globSync but does so asynchronously. The Promise resolves to an Array of strings.

test-exclude for enterprise

Available as part of the Tidelift Subscription.

The maintainers of test-exclude and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.

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