Turn data into generated code and text files.

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dgen takes a template file, plus some data or executable code, and then generates a new file from it.

It simplifies going from structured data to code – and can be used to generate and format TypeScript, HTML, Markdown, JSON, blog posts, or any other type of text file.

This can be used as a command line utility, or as a module in your own codebase via its exported codegen function.

Examples

Generate Markdown, Typescript, and much more. Check out the full examples.

Setup

Install Deno and ensure it is in your path.

Then, run: deno install -frA --name=dgen https://deno.land/x/dgen/mod.ts

This will install dgen as a command line utility.

Usage

A template is required, and ideally a data file or some TypeScript code to return data.

Templates must be vento (.vto) files.

# Use with input file, data, and output.
dgen --in=myCodegenTemplate.vto --data=myCodegenData.json --out=myCodegenFile.ts

# Use with input file, data, output, plus additional processor step.
dgen --in=myCodegenTemplate.vto --data=myCodegenData.json --processor=myTransformationStep.ts --out=myCodegenFile.ts

Command Line Arguments

Option	Description	Example Usage
--in	Path to the template file (vento .vto template), required	--in <template.vto>
--out	Path to the output file, optional, will print to stdout if not provided	--out <output.ts>
--data	Path to the data file (JSON or JSONC), optional	--data <data.json>
--processor	Path to the JS/TS processor file, optional	--processor <processor.ts>
--flags	Additional flags to run alongside the codegen process, optional. Accepts 'fmt', 'check', 'print_info'. Set to 'none' to skip defaults.	--flags fmt,check,print_info
--help	Print the help message	--help