Function downloadBinary

projects/electron/src/modules/code/binaries.ts:170–211

(url: string, destPath: string, name: string)

// ============================================================================

async function downloadBinary(url: string, destPath: string, name: string): Promise<void> {
    const { net } = await import("electron")

    logger.info(`[Binaries] Downloading ${name} from ${url}`)

    const response = await net.fetch(url, { redirect: "follow" })
    if (!response.ok) {
        throw new Error(`Download failed: HTTP ${response.status} ${response.statusText}`)
    }

    const body = response.body
    if (!body) throw new Error("No response body")

    fs.mkdirSync(path.dirname(destPath), { recursive: true })

    const fileStream = createWriteStream(destPath)
    let bytesDownloaded = 0

    const reader = body.getReader()
    try {
        while (true) {
            const { done, value } = await reader.read()
            if (done) break
            fileStream.write(value)
            bytesDownloaded += value.byteLength
        }
    } finally {
        reader.releaseLock()
    }

    fileStream.end()
    await new Promise<void>((resolve, reject) => {
        fileStream.on("finish", resolve)
        fileStream.on("error", reject)
    })

    if (process.platform !== "win32") {
        fs.chmodSync(destPath, 0o755)
    }

    logger.info(`[Binaries] Downloaded ${name}: ${bytesDownloaded} bytes`)
}

// ============================================================================
// Core API