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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | import { build } from 'vite';
import type { Rollup } from 'vite';
import { exportMetadataPlugin } from './export-metadata-plugin.ts';
import { stripCommentsPlugin } from './strip-comments-plugin.ts';
/**
* A bundle produced by the vat bundler.
*
* Contains the bundled code as an IIFE that assigns exports to `__vatExports__`,
* along with metadata about the bundle's exports and external dependencies.
*/
export type VatBundle = {
moduleFormat: 'iife';
code: string;
exports: string[];
external: string[];
};
/**
* Bundle a vat source file using vite.
*
* Produces an IIFE bundle that assigns exports to a `__vatExports__` global,
* along with metadata about the bundle's exports and external dependencies.
*
* @param sourcePath - Absolute path to the vat entry point.
* @returns The bundle object containing code and metadata.
*/
export async function bundleVat(sourcePath: string): Promise<VatBundle> {
const metadataPlugin = exportMetadataPlugin();
const result = await build({
configFile: false,
logLevel: 'silent',
// TODO: Remove this define block and add a process shim to VatSupervisor
// workerEndowments instead. This injects into ALL bundles but is only needed
// for libraries like immer that check process.env.NODE_ENV.
define: {
'process.env.NODE_ENV': JSON.stringify('production'),
},
build: {
write: false,
lib: {
entry: sourcePath,
formats: ['iife'],
name: '__vatExports__',
},
rollupOptions: {
output: {
exports: 'named',
inlineDynamicImports: true,
},
plugins: [stripCommentsPlugin(), metadataPlugin],
},
minify: false,
},
});
const output = Array.isArray(result) ? result[0] : result;
const chunk = (output as Rollup.RollupOutput).output.find(
(item): item is Rollup.OutputChunk => item.type === 'chunk' && item.isEntry,
);
if (!chunk) {
throw new Error(`Failed to produce bundle for ${sourcePath}`);
}
return {
moduleFormat: 'iife',
code: chunk.code,
...metadataPlugin.getMetadata(),
};
}
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