Runner.compilerOptions Method

Specifies test compilation settings. The current version of TestCafe can only configure the TypeScript compiler.

async compilerOptions(options) → this

The Runner.compilerOptions method accepts all compiler options listed in the official TypeScript documentation, as well as two additional parameters:

Parameter	Type	Description
`customCompilerModulePath`	String	The absolute or relative path to the TypeScript compiler module.
`configPath`	String	The absolute or relative path to the TypeScript configuration file.

TestCafe resolves user-specified relative paths against the TestCafe installation folder.

   runner.compilerOptions({
    "typescript": {
        customCompilerModulePath: '../node_modules/typescript-v4',
        configPath: 'custom-ts-config.json',
        experimentalDecorators: true
     ...
     }});

Related configuration file property: compilerOptions
Related CLI parameter: --compiler-options