Skip to main content

Playwright Advanced Configuring

The saucectl YAML configuration file is flexible enough to allow for any customizations and definitions that are required for any of the supported frameworks. The following sections describe some of the most common configurations.

Predefined Environment Variables

If you're running a test script where you need to communicate a Sauce Labs Job ID to a third-party tool, use the SAUCE_JOB_ID predefined variable to reference it.


test('Ensure SAUCE_JOB_ID is defined', async ({ page }) => {

Tailoring Your Test File Bundle

The saucectl command line bundles your root directory (rootDir parameter of config.yml) and transmits it to the Sauce Labs cloud or your own infrastructure via Docker, then unpacks the bundle and runs the tests. This functionality is partly what allows Sauce Control to operate in a framework-agnostic capacity. However, you can and should manage the inclusion and exclusion of files that get bundled to optimize performance and ensure security.

Excluding Files from the Bundle

The .sauceignore file allows you to designate certain files to be excluded from bundling.

Add any files that are not direct test dependencies to .sauceignore to reduce the size of your bundle, improve test speed, and protect sensitive information.

Examples of what can be included in .sauceignore:

# .sauceignore

# Ignore node_modules

# Ignore all log files

# Ignore executables/binaries

# Ignore media files

# Ignore documentation

# Ignore sensitive data

Including Node Dependencies

The default .sauceignore file lists node_modules/ so locally installed node dependencies are excluded from the bundle. If your tests require node dependencies to run, you can either:

Remove "node_modules" from .sauceignore

Delete or comment out node_modules/ in your .sauceignore file to bundle your node dependencies. For example,

# Do NOT exclude node_modules from bundle
# node_modules/

Node dependencies can increase your bundle by potentially hundreds of megabytes, so consider including only the required dependencies rather than the entire node_modules directory. The following sections provide some methods for limiting the scope of dependencies you must include.

Install "devDependencies" Only

Consider only installing NPM devDependencies if your tests do not require all prod dependencies.

# Only install dev dependencies
npm install --only=dev

saucectl run
Uninstall Nonessential Dependencies

If your standard install includes dependencies that aren't needed to run your tests, uninstall them prior to bundling.

# Install node dependencies
npm ci # or "npm install"

# Remove unneeded dependencies
npm uninstall appium
npm uninstall express

saucectl run
Install Essential Dependencies Individually

If you know that your tests require only specific dependencies, install them individually instead of running npm install or npm ci.

# Install individual dependencies
npm install playwright-xpath
npm install @playwright/react

saucectl run

Set NPM Packages in config.yml

You can avoid installing or uninstalling dependencies prior to each bundling operation by defining a default set of NPM packages to install in your sauce configuration file using the npm parameter, as shown in the following example:

lodash: "4.17.20"
"@babel/preset-typescript": "7.12"
"@playwright/react": "^5.0.1"