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* Copyright 2026 nodearchive
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import JSZip from 'jszip'
import type { ArchiveManifest } from '../../.types/ArchiveManifest/type.js'
import type { CompressionLevel } from '../../.types/PackArgs/type.js'
import { NodearchiveError } from '../../.errors/class.js'
import { toNodearchiveError } from '../../.helpers/toNodearchiveError/index.js'
export async function writeZipArchive(
manifest: ArchiveManifest,
compressionLevel: CompressionLevel = 'Optimal'
): Promise<Uint8Array> {
try {
const zip = new JSZip()
for (const entry of manifest.entries) {
if (entry.kind === 'directory') {
zip.file(`${entry.path}/`, '', {
dir: true,
unixPermissions: entry.mode,
})
continue
}
if (!entry.data) {
throw new NodearchiveError(
'ARCHIVE_SERIALIZATION_FAILED',
`Missing file data: ${entry.path}`
)
}
zip.file(entry.path, Buffer.from(entry.data, 'base64'), {
unixPermissions: entry.mode,
})
}
return Uint8Array.from(
await zip.generateAsync(toZipOptions(compressionLevel))
)
} catch (error) {
throw toNodearchiveError(
error,
'ARCHIVE_SERIALIZATION_FAILED',
'Failed to encode zip archive'
)
}
}
function toZipOptions(compressionLevel: CompressionLevel) {
if (compressionLevel === 'NoCompression') {
return { compression: 'STORE' as const, type: 'uint8array' as const }
}
return {
compression: 'DEFLATE' as const,
compressionOptions: {
level: compressionLevel === 'Fastest' ? 1 : 9,
},
type: 'uint8array' as const,
}
}
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