The code inside is compiled as the content of the component's setup function. Imports are exposed in the same fashion. This means you can directly use an imported helper function in template expressions without having to expose it via the methods option:. Reactive state needs to be explicitly created using Reactivity APIs.
You can write tests using TypeScript to get autocompletion and type safety. You will need typescript and ts-node installed as devDependencies. WebdriverIO will automatically detect if these dependencies are installed and will compile your config and tests for you. If you need to configure how ts-node runs please use the environment variables for ts-node or use wdio config's autoCompileOpts section. You can provide custom ts-node and tsconfig-paths options through your wdio.
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Like it or not, JavaScript has been helping developers power the Internet since In that time, JavaScript usage has grown from small user experience enhancements to complex full-stack applications using Node. Today, building JavaScript applications at scale remains a challenge. More and more teams are turning to TypeScript to supplement their JavaScript projects.