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import { env } from "./env.ts";import { Action, Task, TaskRegistry } from "./tasks.ts";import { abort } from "./utils.ts";
/** Global task registry. */const taskRegistry = new TaskRegistry();
/** Set description of next registered task. */export function desc(description: string): void {  taskRegistry.desc(description);}
/** * Create and register a task. Returns the task object. * * - `name` is a unique task name. * - `prereqs` is an array of prerequisite task names.  Prerequisites can be *   Normal task names, File task names, file paths or globs (wildcards). * - `action` is an optional function that is run if the task is selected for *   execution (`type Action = (this: Task) => any;`). * - To fetch an existing task omit both the `prereqs` and `action` parameters. * */export function task(name: string, prereqs?: string[], action?: Action): Task {  if (prereqs !== undefined) {    taskRegistry.register(name, prereqs, action);  }  return taskRegistry.get(name);}
/** * Execute named tasks along with their prerequisite tasks (direct and * indirect). If no `names` are specified then the command-line tasks are run. * If no command-line tasks were specified the default task (set in * `env("--default-task")`) is run. * * Task execution is ordered such that prerequisite tasks are executed prior to * their parent task. The same task is never run twice. */export async function run(...names: string[]) {  if (env("--help") || env("--version")) {    return;  }  if (env("--list-tasks") || env("--list-all")) {    taskRegistry.list().forEach((t: unknown) => console.log(t));  } else {    if (names.length === 0) {      names = env("--tasks");      if (names.length === 0 && env("--default-task")) {        names.push(env("--default-task"));      }    }    if (names.length === 0) {      abort("no task specified");    }    await taskRegistry.run(...names);  }}
/** * Unconditionally execute task action functions asynchronously. * Silently skip tasks that have no action function. */export async function execute(...names: string[]) {  await taskRegistry.execute(...names);}