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deno x
deno x executes a package from npm or JSR without installing it permanently.
It is similar to npx in the npm ecosystem.
Installing the dx alias Jump to heading
For convenience, you can install deno x as a standalone dx binary that runs
with all permissions by default:
deno x --install-alias
Then use it directly:
dx npm:create-vite my-app
You can customize the alias name:
deno x --install-alias=denox
Basic usage Jump to heading
Run an npm package:
deno x npm:create-vite my-app
Run a JSR package:
deno x jsr:@std/http/file-server
How it works Jump to heading
deno x 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.
Permissions Jump to heading
The executed package runs with the permissions you specify:
deno x --allow-read --allow-net npm:serve .
Or grant all permissions:
deno x -A npm:create-vite my-app
deno x [OPTIONS] [SCRIPT_ARG]...Execute a binary from npm or jsr, like npx
Type checking options Jump to heading
--check<CHECK_TYPE>optionalEnable type-checking. This subcommand does not type-check by default If the value of "all" is supplied, remote modules will be included. Alternatively, the 'deno check' subcommand can be used.
--no-check<NO_CHECK_TYPE>optionalSkip type-checking. If the value of "remote" is supplied, diagnostic errors from remote modules will be ignored.
Dependency management options Jump to heading
--cached-onlyRequire that remote dependencies are already cached.
--frozen<BOOLEAN>optionalError out if lockfile is out of date.
Load import map file from local file or remote URL.
--lock<FILE>optionalCheck the specified lock file. (If value is not provided, defaults to "./deno.lock").
--no-lockDisable auto discovery of the lock file.
--no-npmDo not resolve npm modules.
--no-remoteDo not resolve remote modules.
--node-modules-dir<MODE>optionalSets the node modules management mode for npm packages.
--reload, -r<CACHE_BLOCKLIST>optionalReload source code cache (recompile TypeScript) no value Reload everything jsr:@std/http/file-server,jsr:@std/assert/assert-equals Reloads specific modules npm: Reload all npm modules npm:chalk Reload specific npm module.
--vendor<vendor>optionalToggles local vendor folder usage for remote modules and a node_modules folder for npm packages.
Options Jump to heading
--allow-scripts<PACKAGE>optionalAllow running npm lifecycle scripts for the given packages
Note: Scripts will only be executed when using a node_modules directory (--node-modules-dir).
--cert<FILE>Load certificate authority from PEM encoded file.
--conditions<conditions>Use this argument to specify custom conditions for npm package exports. You can also use DENO_CONDITIONS env var. .
Configure different aspects of deno including TypeScript, linting, and code formatting.
Typically the configuration file will be called deno.json or deno.jsonc and
automatically detected; in that case this flag is not necessary.
--env-file<FILE>optionalLoad environment variables from local file Only the first environment variable with a given key is used. Existing process environment variables are not overwritten, so if variables with the same names already exist in the environment, their values will be preserved. Where multiple declarations for the same environment variable exist in your .env file, the first one encountered is applied. This is determined by the order of the files you pass as arguments.
--install-alias<install-alias>optionalCreates a dx alias so you can run dx
--location<HREF>Value of globalThis.location used by some web APIs.
--minimum-dependency-age<minimum-dependency-age>(Unstable) The age in minutes, ISO-8601 duration or RFC3339 absolute timestamp (e.g. '120' for two hours, 'P2D' for two days, '2025-09-16' for cutoff date, '2025-09-16T12:00:00+00:00' for cutoff time, '0' to disable).
--no-configDisable automatic loading of the configuration file.
--preload<FILE>A list of files that will be executed before the main module.
--require<FILE>A list of CommonJS modules that will be executed before the main module.
--seed<NUMBER>Set the random number generator seed.
--v8-flags<V8_FLAGS>optionalTo see a list of all available flags use --v8-flags=--help
Flags can also be set via the DENO_V8_FLAGS environment variable.
Any flags set with this flag are appended after the DENO_V8_FLAGS environment variable.
--yes, -yAssume confirmation for all prompts.
Debugging options Jump to heading
--inspect<HOST_PORT>optionalActivate inspector on host:port [default: 127.0.0.1:9229]. Host and port are optional. Using port 0 will assign a random free port.
--inspect-brk<HOST_PORT>optionalActivate inspector on host:port, wait for debugger to connect and break at the start of user script.
--inspect-wait<HOST_PORT>optionalActivate inspector on host:port and wait for debugger to connect before running user code.