Migrate to `yarn` monorepo (#157)

* chore: use monorepo

* chore: scaffold astro-scripts

* chore: move tests inside packages/astro

* chore: refactor tests, add scripts

* chore: move parser to own module

* chore: move runtime to packages/astro

* fix: move parser to own package

* test: fix prettier-plugin-astro tests

* fix: tests

* chore: update package-lock

* chore: add changesets

* fix: cleanup examples

* fix: starter example

* chore: update changeset config

* chore: update changeset config

* chore: setup changeset release workflow

* chore: bump lockfiles

* chore: prism => astro-prism

* fix: tsc --emitDeclarationOnly

* chore: final cleanup, switch to yarn

* chore: add lerna

* chore: update workflows to yarn

* chore: update workflows

* chore: remove lint workflow

* chore: add astro-dev script

* chore: add symlinked README

5 files changed, 97 insertions, 0 deletions

diff --git a/scripts/cmd/build.js b/scripts/cmd/build.js
new file mode 100644
index 000000000..5f7d6112d
--- /dev/null
+++ b/scripts/cmd/build.js
@@ -0,0 +1,54 @@
+import esbuild from 'esbuild';
+import del from 'del';
+import { promises as fs } from 'fs';
+import { resolve } from 'path';
+import glob from 'tiny-glob';
+
+/** @type {import('esbuild').BuildOptions} */
+const config = {
+    bundle: true,
+    minify: true,
+    sourcemap: 'inline',
+    format: 'esm',
+    platform: 'node',
+    target: 'node14'
+}
+
+export default async function build(pattern, ...args) {
+    const isDev = args.pop() === 'IS_DEV';
+    const entryPoints = await glob(pattern, { filesOnly: true, absolute: true });
+    const { type = 'module', dependencies = {} } = await fs.readFile('./package.json').then(res => JSON.parse(res.toString()));
+    const format = type === 'module' ? 'esm' : 'cjs';
+    const external = Object.keys(dependencies);
+    const outdir = 'dist';
+    await clean(outdir);
+
+    if (!isDev) {
+        await esbuild.build({
+            ...config,
+            entryPoints,
+            outdir,
+            external,
+            format
+        });
+        return;
+    }
+
+    const builder = await esbuild.build({
+        ...config,
+        watch: true,
+        entryPoints,
+        outdir,
+        external,
+        format
+    });
+
+    process.on('beforeExit', () => {
+        builder.stop?.();
+    })
+    
+}
+
+async function clean(outdir) {
+    return del(`!${outdir}/**/*.d.ts`);
+}
diff --git a/scripts/cmd/copy.js b/scripts/cmd/copy.js
new file mode 100644
index 000000000..0fffae1c3
--- /dev/null
+++ b/scripts/cmd/copy.js
@@ -0,0 +1,11 @@
+import { promises as fs } from 'fs';
+import { resolve, dirname } from 'path';
+import glob from 'tiny-glob';
+
+export default async function copy(pattern, ...args) {
+    const files = await glob(pattern, { filesOnly: true });
+    await Promise.all(files.map(file => {
+        const dest = resolve(file.replace(/^[^/]+/, 'dist'));
+        return fs.mkdir(dirname(dest), { recursive: true }).then(() => fs.copyFile(resolve(file), dest))
+    }));
+}
diff --git a/scripts/cmd/test.js b/scripts/cmd/test.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/scripts/cmd/test.js
diff --git a/scripts/index.js b/scripts/index.js
new file mode 100755
index 000000000..cfa747769
--- /dev/null
+++ b/scripts/index.js
@@ -0,0 +1,19 @@
+#!/usr/bin/env node
+export default async function run() {
+    const [cmd, ...args] = process.argv.slice(2);
+    switch (cmd) {
+        case 'dev':
+        case 'build': {
+            const { default: build } = await import('./cmd/build.js');
+            build(...args, cmd === 'dev' ? 'IS_DEV' : undefined);
+            break;
+        }
+        case 'copy': {
+            const { default: copy } = await import('./cmd/copy.js');
+            copy(...args);
+            break;
+        }
+    }
+}
+
+run();
diff --git a/scripts/package.json b/scripts/package.json
new file mode 100644
index 000000000..f9afe3612
--- /dev/null
+++ b/scripts/package.json
@@ -0,0 +1,13 @@
+{
+    "name": "astro-scripts",
+    "version": "0.0.1",
+    "private": true,
+    "type": "module",
+    "main": "./index.js",
+    "bin": {
+        "astro-scripts": "./index.js"
+    },
+    "dependencies": {
+        "esbuild": "^0.11.16"
+    }
+}