Deno 1.10, the latest version of the security-focused runtime for JavaScript and TypeScript, improves the built-in test runner and adds a Web Storage API. The update was published May 11.

In Deno 1.10, the deno test test runner runs discovered test modules in isolation using a new instance of the runtime for each module. Previously, Deno ran tests serially inside a single runtime instance. Further, deno test now supports the --jobs flag to specify how many threads should be used when running tests. Tests still run serially by default.

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