deno x --install-alias
The --install-alias flag installs deno x as a standalone dx binary that runs with all permissions by default. You can customize the alias name with --install-alias=<name>.
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cli commands/x
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deno x -p package flag
The -p or --package flag lets you specify the package separately from the binary name, allowing you to choose which binary to run when a package exposes multiple binaries. Syntax: deno x -p <package> <binary> or deno x -p <package>@<version> <binary>. This matches the npx -p <package> <binary> convention.
deno x npm package syntax
To run an npm package with deno x, use the syntax deno x npm:<package> to run the default binary, or deno x -p <package> <binary> or deno x npm:<package>/<binary> to run a specific binary when the package ships multiple binaries.
deno x jsr package syntax
To run a JSR package with deno x, use the syntax deno x jsr:@scope/package/subpath pointing at a specific export that executes when imported.
deno x caching behavior
The deno x command downloads the package to the global cache if not already cached, resolves the package's binary entry point, and executes it. The package is not added to your project's deno.json or package.json.
deno x permissions
The executed package runs with the permissions you specify using flags such as --allow-read, --allow-net, or -A for all permissions. Example: deno x --allow-read --allow-net npm:serve . or deno x -A npm:create-vite my-app
npm package bin field for deno x
npm packages expose runnable binaries through the bin field in package.json. To make your own npm package runnable with deno x, publish it with a bin entry as you would for npx.
JSR package runnable exports for deno x
JSR packages are run by pointing deno x at an export that executes when imported. To make your own JSR package runnable with deno x, expose the entry point as a module export and guard top-level side effects with import.meta.main so the module can still be imported as a library, then document the subpath users should run.
deno x example: create-vite
Example: deno x npm:create-vite my-app
deno x example: file-server
Example: deno x jsr:@std/http/file-server
deno x example: typescript
Example: deno x -p typescript tsc runs the tsc binary from the typescript package. You can pin the package version: deno x -p typescript@5 tsc
dx alias installation and usage
After running deno x --install-alias, you can use the dx command directly. Example: dx npm:create-vite my-app