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svelte/rollup.config.mjs

151 lines
3.6 KiB

import fs from 'node:fs';
import { createRequire } from 'node:module';
import replace from '@rollup/plugin-replace';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import json from '@rollup/plugin-json';
import sucrase from '@rollup/plugin-sucrase';
import typescript from '@rollup/plugin-typescript';
const require = createRequire(import.meta.url);
const pkg = JSON.parse(fs.readFileSync('package.json', 'utf-8'));
const is_publish = !!process.env.PUBLISH;
const ts_plugin = is_publish
? typescript({
typescript: require('typescript'),
paths: {
'svelte/*': ['./src/runtime/*']
}
})
: sucrase({
transforms: ['typescript']
});
fs.writeFileSync(
`./compiler.d.ts`,
`export { compile, parse, preprocess, walk, VERSION } from './types/compiler/index.js';`
);
const runtime_entrypoints = Object.fromEntries(
fs
.readdirSync('src/runtime', { withFileTypes: true })
.filter((dirent) => dirent.isDirectory())
.map((dirent) => [dirent.name, `src/runtime/${dirent.name}/index.ts`])
);
/**
* @type {import("rollup").RollupOptions[]}
*/
export default [
{
input: {
...runtime_entrypoints,
index: 'src/runtime/index.ts',
ssr: 'src/runtime/ssr.ts'
},
output: ['es', 'cjs'].map(
/** @returns {import('rollup').OutputOptions} */
(format) => {
const ext = format === 'es' ? 'mjs' : 'js';
return {
entryFileNames: (entry) => {
if (entry.isEntry) {
if (entry.name === 'index') return `index.${ext}`;
else if (entry.name === 'ssr') return `ssr.${ext}`;
return `${entry.name}/index.${ext}`;
}
},
chunkFileNames: `internal/[name]-[hash].${ext}`,
format,
minifyInternalExports: false,
dir: '.',
};
}
),
plugins: [
replace({
preventAssignment: true,
values: {
__VERSION__: pkg.version,
},
}),
ts_plugin,
{
writeBundle(options, bundle) {
if (options.format !== 'es') return;
for (const entry of Object.values(bundle)) {
const dir = entry.name;
if (!entry.isEntry || !runtime_entrypoints[dir]) continue;
if (dir === 'internal') {
const mod = bundle[`internal/index.mjs`];
if (mod) {
fs.writeFileSync(
'src/compiler/compile/internal_exports.ts',
`// This file is automatically generated\n` +
`export default new Set(${JSON.stringify(mod.exports)});`
);
}
}
fs.writeFileSync(
`${dir}/index.d.ts`,
`export * from '../types/runtime/${dir}/index.js';`
);
}
}
}
]
},
/* compiler.js */
{
input: 'src/compiler/index.ts',
plugins: [
replace({
preventAssignment: true,
values: {
__VERSION__: pkg.version,
'process.env.NODE_DEBUG': false // appears inside the util package
},
}),
{
resolveId(id) {
// util is a built-in module in Node.js, but we want a self-contained compiler bundle
// that also works in the browser, so we load its polyfill instead
if (id === 'util') {
return require.resolve('./node_modules/util'); // just 'utils' would resolve this to the built-in module
}
},
},
resolve(),
commonjs({
include: ['node_modules/**']
}),
json(),
ts_plugin
],
output: [
{
file: 'compiler.js',
format: is_publish ? 'umd' : 'cjs',
name: 'svelte',
sourcemap: true,
},
{
file: 'compiler.mjs',
format: 'esm',
name: 'svelte',
sourcemap: true,
}
],
external: is_publish
? []
: (id) =>
id === 'acorn' || id === 'magic-string' || id.startsWith('css-tree')
}
];