Deno Task Runner Config Generator
Build deno.json task configurations visually. Add tasks with commands, environment variables, and descriptions — then copy the formatted JSON straight into your project.
Tasks
Generated deno.json
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See what's included → Browse all deals →Frequently Asked Questions
What is deno.json and what does it do?▼
deno.json is the configuration file for Deno projects. It defines tasks (like npm scripts), import maps, lint/format settings, and compiler options. The 'tasks' field lets you define named commands that can be run with 'deno task <name>', making project workflows reproducible and shareable.
How do I run a task defined in deno.json?▼
Use 'deno task <task-name>' in your terminal. For example, if you define a task called 'start', run 'deno task start'. Deno automatically looks for deno.json or deno.jsonc in the current directory or any parent directory.
Can Deno tasks have environment variables?▼
Yes. You can set environment variables directly in the task command using standard shell syntax like 'PORT=3000 deno run server.ts', or you can configure them in the 'env' object within each task definition (Deno 1.38+). The tool generates both approaches depending on your input.
What is the difference between deno.json and package.json scripts?▼
Deno tasks in deno.json support cross-platform shell commands via the built-in deno_task_shell, so they work on Windows, macOS, and Linux without needing a POSIX shell. npm scripts rely on the OS shell and can behave differently across platforms. Deno tasks also support dependencies between tasks using the 'dependencies' field.
Can Deno tasks depend on other tasks?▼
Yes, in Deno 1.38+ you can use the 'dependencies' array inside a task to declare which tasks must run first. For example, a 'build' task might depend on 'compile' and 'bundle' tasks running concurrently. This enables powerful task pipelines without extra tooling.
What shell syntax is supported in Deno tasks?▼
Deno tasks use deno_task_shell, which supports: sequential commands (&&, ;), piping (|), environment variable expansion ($VAR), redirects (>, >>), and basic glob expansion. It does NOT support advanced bash features like process substitution or complex parameter expansion — keep commands simple and cross-platform.