rad 💯

// rad.ts - your buildfile
import { Tasks } from "https://raw.githubusercontent.com/cdaringe/rad/master/src/mod.ts";

// command tasks
const format = `prettier --write`
const test = `deno test`

// function tasks
const compile = {
  dependsOn: [format],
  fn({ sh, ...toolkit }) => sh('tsc')
}

// make-style tasks
const transpile = {
  target: "phony",
  prereqs: ["p1", "p2"],
  async onMake({ logger }, { prereqs, getChangedPrereqFilenames }) {
    const babel = await import("https://my.cdn/babel/7.js")
    for await (const req of prereqs) {
      logger.info(`req: <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>r</mi><mi>e</mi><mi>q</mi><mi mathvariant="normal">.</mi><mi>f</mi><mi>i</mi><mi>l</mi><mi>e</mi><mi>n</mi><mi>a</mi><mi>m</mi><mi>e</mi></mrow><annotation encoding="application/x-tex">{req.filename} </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.8889em;vertical-align:-0.1944em;"></span><span class="mord"><span class="mord mathnormal">re</span><span class="mord mathnormal" style="margin-right:0.03588em;">q</span><span class="mord">.</span><span class="mord mathnormal" style="margin-right:0.10764em;">f</span><span class="mord mathnormal">i</span><span class="mord mathnormal" style="margin-right:0.01968em;">l</span><span class="mord mathnormal">e</span><span class="mord mathnormal">nam</span><span class="mord mathnormal">e</span></span></span></span></span>{JSON.stringify(req.info)}`);
    }
    const changed = await getChangedPrereqFilenames();
    logger.info(`changed: <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mrow><mi>c</mi><mi>h</mi><mi>a</mi><mi>n</mi><mi>g</mi><mi>e</mi><mi>d</mi></mrow><mo stretchy="false">(</mo></mrow><annotation encoding="application/x-tex">{changed} (</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord"><span class="mord mathnormal">c</span><span class="mord mathnormal">han</span><span class="mord mathnormal" style="margin-right:0.03588em;">g</span><span class="mord mathnormal">e</span><span class="mord mathnormal">d</span></span><span class="mopen">(</span></span></span></span>{changed.length})`);
  },
}

export const tasks: Tasks = {
  compile,
  format,
  test
}