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root

  • CLI: -r, --root <path>
  • Config: root

Root path

config

  • CLI: -c, --config <path>

Path to config file

update

  • CLI: -u, --update
  • Config: update

Update snapshot

watch

  • CLI: -w, --watch
  • Config: watch

Enable watch mode

testNamePattern

Run tests with full names matching the specified regexp pattern

dir

  • CLI: --dir <path>
  • Config: dir

Base directory to scan for the test files

ui

  • CLI: --ui

Enable UI

open

  • CLI: --open
  • Config: open

Open UI automatically (default: !process.env.CI)

api.port

  • CLI: --api.port [port]

Specify server port. Note if the port is already being used, Vite will automatically try the next available port so this may not be the actual port the server ends up listening on. If true will be set to 51204

api.host

  • CLI: --api.host [host]

Specify which IP addresses the server should listen on. Set this to 0.0.0.0 or true to listen on all addresses, including LAN and public addresses

api.strictPort

  • CLI: --api.strictPort

Set to true to exit if port is already in use, instead of automatically trying the next available port

silent

  • CLI: --silent [value]
  • Config: silent

Silent console output from tests. Use 'passed-only' to see logs from failing tests only.

hideSkippedTests

  • CLI: --hideSkippedTests

Hide logs for skipped tests

reporters

Specify reporters (default, blob, verbose, dot, json, tap, tap-flat, junit, tree, hanging-process, github-actions)

outputFile

  • CLI: --outputFile <filename/-s>
  • Config: outputFile

Write test results to a file when supporter reporter is also specified, use cac's dot notation for individual outputs of multiple reporters (example: --outputFile.tap=./tap.txt)

coverage.provider

Select the tool for coverage collection, available values are: "v8", "istanbul" and "custom"

coverage.enabled

Enables coverage collection. Can be overridden using the --coverage CLI option (default: false)

coverage.include

Files included in coverage as glob patterns. May be specified more than once when using multiple patterns. By default only files covered by tests are included.

coverage.exclude

Files to be excluded in coverage. May be specified more than once when using multiple extensions.

coverage.clean

Clean coverage results before running tests (default: true)

coverage.cleanOnRerun

Clean coverage report on watch rerun (default: true)

coverage.reportsDirectory

Directory to write coverage report to (default: ./coverage)

coverage.reporter

Coverage reporters to use. Visit coverage.reporter for more information (default: ["text", "html", "clover", "json"])

coverage.reportOnFailure

Generate coverage report even when tests fail (default: false)

coverage.allowExternal

Collect coverage of files outside the project root (default: false)

coverage.skipFull

Do not show files with 100% statement, branch, and function coverage (default: false)

coverage.thresholds.100

Shortcut to set all coverage thresholds to 100 (default: false)

coverage.thresholds.perFile

Check thresholds per file. See --coverage.thresholds.lines, --coverage.thresholds.functions, --coverage.thresholds.branches and --coverage.thresholds.statements for the actual thresholds (default: false)

coverage.thresholds.autoUpdate

Update threshold values: "lines", "functions", "branches" and "statements" to configuration file when current coverage is above the configured thresholds (default: false)

coverage.thresholds.lines

  • CLI: --coverage.thresholds.lines <number>

Threshold for lines. Visit istanbuljs for more information. This option is not available for custom providers

coverage.thresholds.functions

  • CLI: --coverage.thresholds.functions <number>

Threshold for functions. Visit istanbuljs for more information. This option is not available for custom providers

coverage.thresholds.branches

  • CLI: --coverage.thresholds.branches <number>

Threshold for branches. Visit istanbuljs for more information. This option is not available for custom providers

coverage.thresholds.statements

  • CLI: --coverage.thresholds.statements <number>

Threshold for statements. Visit istanbuljs for more information. This option is not available for custom providers

coverage.ignoreClassMethods

Array of class method names to ignore for coverage. Visit istanbuljs for more information. This option is only available for the istanbul providers (default: [])

coverage.processingConcurrency

Concurrency limit used when processing the coverage results. (default min between 20 and the number of CPUs)

coverage.customProviderModule

Specifies the module name or path for the custom coverage provider module. Visit Custom Coverage Provider for more information. This option is only available for custom providers

coverage.watermarks.statements

  • CLI: --coverage.watermarks.statements <watermarks>

High and low watermarks for statements in the format of <high>,<low>

coverage.watermarks.lines

  • CLI: --coverage.watermarks.lines <watermarks>

High and low watermarks for lines in the format of <high>,<low>

coverage.watermarks.branches

  • CLI: --coverage.watermarks.branches <watermarks>

High and low watermarks for branches in the format of <high>,<low>

coverage.watermarks.functions

  • CLI: --coverage.watermarks.functions <watermarks>

High and low watermarks for functions in the format of <high>,<low>

mode

  • CLI: --mode <name>
  • Config: mode

Override Vite mode (default: test or benchmark)

isolate

Run every test file in isolation. To disable isolation, use --no-isolate (default: true)

globals

Inject apis globally

dom

  • CLI: --dom

Mock browser API with happy-dom

browser.enabled

Run tests in the browser. Equivalent to --browser.enabled (default: false)

browser.name

  • CLI: --browser.name <name>

Run all tests in a specific browser. Some browsers are only available for specific providers (see --browser.provider).

browser.headless

Run the browser in headless mode (i.e. without opening the GUI (Graphical User Interface)). If you are running Vitest in CI, it will be enabled by default (default: process.env.CI)

browser.api.port

Specify server port. Note if the port is already being used, Vite will automatically try the next available port so this may not be the actual port the server ends up listening on. If true will be set to 63315

browser.api.host

Specify which IP addresses the server should listen on. Set this to 0.0.0.0 or true to listen on all addresses, including LAN and public addresses

browser.api.strictPort

Set to true to exit if port is already in use, instead of automatically trying the next available port

browser.isolate

Run every browser test file in isolation. To disable isolation, use --browser.isolate=false (default: true)

browser.ui

Show Vitest UI when running tests (default: !process.env.CI)

browser.detailsPanelPosition

Default position for the details panel in browser mode. Either right (horizontal split) or bottom (vertical split) (default: right)

browser.fileParallelism

  • CLI: --browser.fileParallelism

Should browser test files run in parallel. Use --browser.fileParallelism=false to disable (default: true)

browser.connectTimeout

If connection to the browser takes longer, the test suite will fail (default: 60_000)

browser.trackUnhandledErrors

Control if Vitest catches uncaught exceptions so they can be reported (default: true)

browser.trace

Enable trace view mode. Supported: "on", "off", "on-first-retry", "on-all-retries", "retain-on-failure".

pool

  • CLI: --pool <pool>
  • Config: pool

Specify pool, if not running in the browser (default: forks)

execArgv

  • CLI: --execArgv <option>
  • Config: execArgv

Pass additional arguments to node process when spawning worker_threads or child_process.

vmMemoryLimit

Memory limit for VM pools. If you see memory leaks, try to tinker this value.

fileParallelism

Should all test files run in parallel. Use --no-file-parallelism to disable (default: true)

maxWorkers

Maximum number or percentage of workers to run tests in

environment

Specify runner environment, if not running in the browser (default: node)

passWithNoTests

Pass when no tests are found

logHeapUsage

Show the size of heap for each test when running in node

allowOnly

Allow tests and suites that are marked as only (default: !process.env.CI)

dangerouslyIgnoreUnhandledErrors

Ignore any unhandled errors that occur

sequence.shuffle.files

Run files in a random order. Long running tests will not start earlier if you enable this option. (default: false)

sequence.shuffle.tests

Run tests in a random order (default: false)

sequence.concurrent

Make tests run in parallel (default: false)

sequence.seed

Set the randomization seed. This option will have no effect if --sequence.shuffle is falsy. Visit "Random Seed" page for more information

sequence.hooks

Changes the order in which hooks are executed. Accepted values are: "stack", "list" and "parallel". Visit sequence.hooks for more information (default: "parallel")

sequence.setupFiles

Changes the order in which setup files are executed. Accepted values are: "list" and "parallel". If set to "list", will run setup files in the order they are defined. If set to "parallel", will run setup files in parallel (default: "parallel")

inspect

  • CLI: --inspect [[host:]port]

Enable Node.js inspector (default: 127.0.0.1:9229)

inspectBrk

  • CLI: --inspectBrk [[host:]port]

Enable Node.js inspector and break before the test starts

testTimeout

Default timeout of a test in milliseconds (default: 5000). Use 0 to disable timeout completely.

hookTimeout

Default hook timeout in milliseconds (default: 10000). Use 0 to disable timeout completely.

bail

  • CLI: --bail <number>
  • Config: bail

Stop test execution when given number of tests have failed (default: 0)

retry.count

Number of times to retry a test if it fails (default: 0)

retry.delay

Delay in milliseconds between retry attempts (default: 0)

retry.condition

Regex pattern to match error messages that should trigger a retry. Only errors matching this pattern will cause a retry (default: retry on all errors)

diff.aAnnotation

Annotation for expected lines (default: Expected)

diff.aIndicator

Indicator for expected lines (default: -)

diff.bAnnotation

Annotation for received lines (default: Received)

diff.bIndicator

Indicator for received lines (default: +)

diff.commonIndicator

Indicator for common lines (default: )

diff.contextLines

Number of lines of context to show around each change (default: 5)

diff.emptyFirstOrLastLinePlaceholder

Placeholder for an empty first or last line (default: "")

diff.expand

Expand all common lines (default: true)

diff.includeChangeCounts

Include comparison counts in diff output (default: false)

diff.omitAnnotationLines

Omit annotation lines from the output (default: false)

diff.printBasicPrototype

Print basic prototype Object and Array (default: true)

diff.maxDepth

Limit the depth to recurse when printing nested objects (default: 20)

diff.truncateThreshold

Number of lines to show before and after each change (default: 0)

diff.truncateAnnotation

Annotation for truncated lines (default: ... Diff result is truncated)

exclude

  • CLI: --exclude <glob>
  • Config: exclude

Additional file globs to be excluded from test

expandSnapshotDiff

Show full diff when snapshot fails

disableConsoleIntercept

Disable automatic interception of console logging (default: false)

typecheck.enabled

Enable typechecking alongside tests (default: false)

typecheck.only

Run only typecheck tests. This automatically enables typecheck (default: false)

typecheck.checker

Specify the typechecker to use. Available values are: "tsc" and "vue-tsc" and a path to an executable (default: "tsc")

typecheck.allowJs

Allow JavaScript files to be typechecked. By default takes the value from tsconfig.json

typecheck.ignoreSourceErrors

Ignore type errors from source files

typecheck.tsconfig

Path to a custom tsconfig file

typecheck.spawnTimeout

Minimum time in milliseconds it takes to spawn the typechecker

project

  • CLI: --project <name>

The name of the project to run if you are using Vitest workspace feature. This can be repeated for multiple projects: --project=1 --project=2. You can also filter projects using wildcards like --project=packages*, and exclude projects with --project=!pattern.

slowTestThreshold

Threshold in milliseconds for a test or suite to be considered slow (default: 300)

teardownTimeout

Default timeout of a teardown function in milliseconds (default: 10000)

maxConcurrency

Maximum number of concurrent tests in a suite (default: 5)

expect.requireAssertions

Require that all tests have at least one assertion

expect.poll.interval

Poll interval in milliseconds for expect.poll() assertions (default: 50)

expect.poll.timeout

Poll timeout in milliseconds for expect.poll() assertions (default: 1000)

printConsoleTrace

Always print console stack traces

includeTaskLocation

Collect test and suite locations in the location property

attachmentsDir

The directory where attachments from context.annotate are stored in (default: .vitest-attachments)

run

  • CLI: --run

Disable watch mode

color

  • CLI: --no-color

Removes colors from the console output

clearScreen

  • CLI: --clearScreen

Clear terminal screen when re-running tests during watch mode (default: true)

configLoader

  • CLI: --configLoader <loader>

Use bundle to bundle the config with esbuild or runner (experimental) to process it on the fly. This is only available in vite version 6.1.0 and above. (default: bundle)

standalone

  • CLI: --standalone

Start Vitest without running tests. Tests will be running only on change. This option is ignored when CLI file filters are passed. (default: false)

listTags

  • CLI: --listTags [type]

List all available tags instead of running tests. --list-tags=json will output tags in JSON format, unless there are no tags.

clearCache

  • CLI: --clearCache

Delete all Vitest caches, including experimental.fsModuleCache, without running any tests. This will reduce the performance in the subsequent test run.

tagsFilter

  • CLI: --tagsFilter <expression>

Run only tests with the specified tags. You can use logical operators && (and), || (or) and ! (not) to create complex expressions, see Test Tags for more information.

strictTags

Should Vitest throw an error if test has a tag that is not defined in the config. (default: true)

experimental.fsModuleCache

Enable caching of modules on the file system between reruns.

experimental.importDurations.print

Print import breakdown to CLI terminal after tests finish (default: false).

experimental.importDurations.limit

Maximum number of imports to collect and display (default: 0, or 10 if print or UI is enabled).

experimental.viteModuleRunner

Control whether Vitest uses Vite's module runner to run the code or fallback to the native import. (default: true)

experimental.nodeLoader

Controls whether Vitest will use Node.js Loader API to process in-source or mocked files. This has no effect if viteModuleRunner is enabled. Disabling this can increase performance. (default: true)