core: change build script to plain javascript

build/utils.js

@@ -0,0 +1,40 @@
+/* eslint-disable no-console */
+/* eslint-disable import/no-extraneous-dependencies */
+const globby = require('globby');
+const spawn = require('cross-spawn');
+
+const cwd = process.cwd();
+
+function getWorkspaces() {
+    return globby(require('../package').workspaces, {
+        cwd,
+        deep: 0,
+        onlyDirectories: true,
+        expandDirectories: false,
+    });
+}
+
+function spawnSync(command: string, silent?: boolean) {
+    if (!silent) console.log(`$ ${command}`);
+    const args = command.split(/\s+/);
+    const result = spawn.sync(args[0], [...args.slice(1), '--color'], { cwd, encoding: 'utf8' });
+    if (result.status) {
+        throw new Error(result.stderr);
+    } else {
+        if (!silent) console.log(result.stdout);
+        return result.stdout.trim();
+    }
+}
+
+function spawnAsync(command: string) {
+    const args = command.split(/\s+/);
+    const child = spawn(args[0], args.slice(1), { stdio: 'inherit' });
+    return new Promise((resolve, reject) => {
+        child.on('close', resolve);
+        child.on('error', reject);
+    });
+}
+
+module.exports = {
+    cwd, spawnSync, spawnAsync, getWorkspaces,
+};