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The ionic.e2e.config.ts file can take a large number of advanced configuration options. This file contains an object that is an expanded WebdriverIO configuration object. Thus, all WebdriverIO configuration values can be used.

See the WebdriverIO configuration documentation for the full range of configuration options.

One note is that the capabilities array is not used and should not be populated. Instead, the Ionic E2E test runner dynamically builds a list of capabilities for each test from the CLI tool.