import * as fs from 'node:fs'; import * as path from 'node:path'; import { fileURLToPath } from 'node:url'; import { parseArgs } from 'node:util'; import glob from 'tiny-glob/sync.js'; import { compile, compileModule, parse, migrate } from 'svelte/compiler'; const argv = parseArgs({ options: { runes: { type: 'boolean' } }, args: process.argv.slice(2) }); const cwd = fileURLToPath(new URL('.', import.meta.url)).slice(0, -1); // empty output directory if (fs.existsSync(`${cwd}/output`)) { for (const file of fs.readdirSync(`${cwd}/output`)) { if (file === '.gitkeep') continue; try { fs.rmSync(`${cwd}/output/${file}`, { recursive: true }); } catch {} } } /** @param {string} dir */ function mkdirp(dir) { try { fs.mkdirSync(dir, { recursive: true }); } catch {} } const svelte_modules = glob('**/*.svelte', { cwd: `${cwd}/input` }); const js_modules = glob('**/*.js', { cwd: `${cwd}/input` }); for (const generate of /** @type {const} */ (['client', 'server'])) { console.error(`\n--- generating ${generate} ---\n`); for (const file of svelte_modules) { const input = `${cwd}/input/${file}`; const source = fs.readFileSync(input, 'utf-8'); const output_js = `${cwd}/output/${generate}/${file}.js`; const output_map = `${cwd}/output/${generate}/${file}.js.map`; const output_css = `${cwd}/output/${generate}/${file}.css`; mkdirp(path.dirname(output_js)); if (generate === 'client') { const ast = parse(source, { modern: true }); fs.writeFileSync(`${cwd}/output/${file}.json`, JSON.stringify(ast, null, '\t')); try { const migrated = migrate(source); fs.writeFileSync(`${cwd}/output/${file}.migrated.svelte`, migrated.code); } catch (e) { console.warn(`Error migrating ${file}`, e); } } const compiled = compile(source, { dev: true, filename: input, generate, runes: argv.values.runes }); for (const warning of compiled.warnings) { console.warn(warning.code); console.warn(warning.frame); } fs.writeFileSync( output_js, compiled.js.code + '\n//# sourceMappingURL=' + path.basename(output_map) ); fs.writeFileSync(output_map, compiled.js.map.toString()); if (compiled.css) { fs.writeFileSync(output_css, compiled.css.code); } } for (const file of js_modules) { const input = `${cwd}/input/${file}`; const source = fs.readFileSync(input, 'utf-8'); const compiled = compileModule(source, { dev: true, filename: input, generate }); const output_js = `${cwd}/output/${generate}/${file}`; mkdirp(path.dirname(output_js)); fs.writeFileSync(output_js, compiled.js.code); } }