Execli

Generate task-oriented CLIs declaratively.

Powered by listr2 and yargs.

Usage

Example file

// commands.ts
import { OptionsContext, Task, getCommand } from "execli";

const options = {
  customFlag: {
    boolean: true,
    description: "A custom option",
  },
} as const;

type DemoContext = OptionsContext<typeof options>;

const parentTask: Task<DemoContext> = {
  children: [
    {
      command: ["pwd"],
      title: "Command task",
    },
    {
      async run({ context: { customFlag }, exec }) {
        if (customFlag) {
          console.log("flag given");
        } else {
          await exec(["sleep", "1"]);
        }
      },
      tags: ["regular"],
      title: "Regular task",
    },
    {
      children: [
        {
          command: ["curl", "https://example.com"],
          tags: ["network"],
          title: "Another command task",
        },
        {
          command: ["touch", "file.txt"],
          tags: ["filesystem"],
          title: "Yet another command task",
        },
      ],
      title: "Nested task",
    },
  ],
  title: "Parent task",
};

export const demo = getCommand({
  options,
  task: parentTask,
});

This file is written in TypeScript to showcase the built-in types. Compile it down to JavaScript to use it with the following commands.

Running the CLI

$ execli run --help
execli run <path>

Run the commands at the given path, forwarding the command line arguments after `--`.

Positionals:
  path  The path resolving to the file exporting the commands.     [string] [required]

Options:
  --help  Show help                                                          [boolean]

$ execli run commands.js -- demo --help
execli demo

Parent task

Options:
  --help         Show help                                                                                                                  [boolean]
  --customFlag   A custom option                                                                                                            [boolean]
  --concurrency  How many concurrent tasks should be executed at the same time.
                 0 means 1 task, 1 means as much as there are CPUs on the machine, 0.5 means half the CPUs, etc.
                 If 0, the verbose renderer will be used and the output of shell commands will be streamed to the terminal.
                                                                                                      [number] [default: Use all the available CPUs.]
  --dryRun       Do not run tasks but show the shell commands that would have been run.                                    [boolean] [default: false]
  --from         Skip tasks before the one with the given title (or title slug).
                          [choices: "Another command task", "Command task", "Nested task", "Parent task", "Regular task", "Yet another command task"]
  --only         Only run tasks with one of the given titles (or title slugs).
    [array] [choices: "Another command task", "Command task", "Nested task", "Parent task", "Regular task", "Yet another command task"] [default: []]
  --skip         Skip tasks with one of the given titles (or title slugs).
    [array] [choices: "Another command task", "Command task", "Nested task", "Parent task", "Regular task", "Yet another command task"] [default: []]
  --tag          Only run tasks with at least one of the given tags.              [array] [choices: "filesystem", "network", "regular"] [default: []]
  --until        Skip tasks after the one with the given title (or title slug).
                          [choices: "Another command task", "Command task", "Nested task", "Parent task", "Regular task", "Yet another command task"]

$ execli run commands.js -- demo --dryRun
✔ Parent task [0.0s]
  ⚠ Command task ($ pwd)
    ↓ Skipped by --dryRun option
  ⚠ Regular task
    ↓ Skipped by --dryRun option
  ✔ Nested task [0.0s]
    ⚠ Another command task ($ curl https://example.com)
      ↓ Skipped by --dryRun option
    ⚠ Yet another command task ($ touch file.txt)
      ↓ Skipped by --dryRun option

Compiling the CLI

$ execli compile --help
execli compile <source> <target>

Compile the commands at the given path to a single executable Node.js file, together with all the dependencies.

Positionals:
  source  The path resolving to the file exporting the commands.        [string] [required]
  target  The path where the compiled Node.js file will be written to.  [string] [required]

Options:
  --help  Show help                                                               [boolean]

$ execli compile commands.js cli.js
$ ./cli.js demo --debug  --dryRun
❯ Parent task
❯ Command task
☒ Command task ($ pwd)
↓ Skipped by --dryRun option
❯ Regular task
↓ Skipped by --dryRun option
❯ Nested task
❯ Another command task
☒ Another command task ($ curl https://example.com)
↓ Skipped by --dryRun option
❯ Yet another command task
☒ Yet another command task ($ touch file.txt)
↓ Skipped by --dryRun option
✔ Nested task [0.0s]
✔ Parent task [0.0s]