#!/usr/bin/env node
// scripts/sync-grammars.mjs
// Copies the curated Tree-sitter wasm set from node_modules into grammars/
import fs from 'node:fs';
import path from 'node:path';
import { createRequire } from 'node:module';
import { randomBytes } from 'node:crypto';
const require = createRequire(import.meta.url);
// ── Curated set (must match src/grammars/manifest.ts) ────────────────────
const CURATED_WASMS = [
'tree-sitter-javascript.wasm',
'tree-sitter-typescript.wasm',
'tree-sitter-tsx.wasm',
'tree-sitter-python.wasm',
'tree-sitter-go.wasm',
'tree-sitter-rust.wasm',
'tree-sitter-java.wasm',
'tree-sitter-c.wasm',
'tree-sitter-cpp.wasm',
'tree-sitter-c_sharp.wasm'
];
const sourceDir = path.join(path.dirname(require.resolve('tree-sitter-wasms/package.json')), 'out');
const destDir = path.resolve('grammars');
// ── Ensure destination exists ────────────────────────────────────────────
fs.mkdirSync(destDir, { recursive: true });
let copied = 0;
for (const wasm of CURATED_WASMS) {
const src = path.join(sourceDir, wasm);
if (!fs.existsSync(src)) {
console.error(`ERROR: Missing source wasm: ${src}`);
process.exit(1);
}
const dest = path.join(destDir, wasm);
// Atomic copy: write to temp name then rename to avoid partial files
const tmp = dest + '.tmp-' + randomBytes(4).toString('hex');
fs.copyFileSync(src, tmp);
fs.renameSync(tmp, dest);
copied++;
}
console.log(`sync-grammars: ${copied} wasm files → ${destDir}`);
