refactor: rewrite for esm

esm-focused refactor; adds support for js/cjs/mjs extensions; exports esm module; drops node <16
support

BREAKING CHANGE: Drops node <16 support

kpo.tasks.cjs

@@ -0,0 +1,42 @@
+const riseup = require('./riseup.config.cjs');
+
+module.exports = ({
+  recreate,
+  context,
+  create,
+  series,
+  lift,
+  exec,
+  catches,
+  mkdir,
+  remove
+}) => {
+  const tasks = {
+    node: riseup.node,
+    build: series(
+      mkdir('build', { ensure: true }),
+      remove('build/*', { glob: true, recursive: true }),
+      exec('tsup')
+    ),
+    tarball: riseup.tarball,
+    docs: riseup.docs,
+    fix: riseup.fix,
+    lint: series(riseup.lintmd, riseup.lint),
+    test: riseup.test,
+    commit: riseup.commit,
+    release: context({ args: ['--no-verify'] }, riseup.release),
+    distribute: riseup.distribute,
+    validate: series(
+      create(() => tasks.lint),
+      catches({ level: 'silent' }, exec('npm', ['outdated']))
+    ),
+    /* Hooks */
+    version: series(
+      create(() => tasks.validate),
+      create(() => tasks.build),
+      create(() => tasks.docs)
+    )
+  };
+
+  return recreate({ announce: true }, tasks);
+};