68 lines
1.5 KiB
TypeScript
68 lines
1.5 KiB
TypeScript
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type PackFile = {
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path: string;
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size: number;
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};
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type PackResult = {
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name: string;
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version: string;
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filename: string;
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files: PackFile[];
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unpackedSize: number;
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size: number;
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};
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const proc = Bun.spawn(["npm", "pack", "--dry-run", "--json"], {
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stdout: "pipe",
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stderr: "pipe",
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});
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const [stdout, stderr, exitCode] = await Promise.all([
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new Response(proc.stdout).text(),
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new Response(proc.stderr).text(),
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proc.exited,
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]);
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if (exitCode !== 0) {
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process.stderr.write(stderr);
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process.stderr.write(stdout);
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process.exit(exitCode);
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}
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const results = JSON.parse(stdout) as PackResult[];
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const result = results[0];
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if (!result) {
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throw new Error("npm pack did not return package metadata");
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}
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const byTopLevel = new Map<string, number>();
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for (const file of result.files) {
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const [topLevel = file.path] = file.path.split("/");
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byTopLevel.set(topLevel, (byTopLevel.get(topLevel) ?? 0) + 1);
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}
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const topLevelSummary = [...byTopLevel.entries()]
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.sort(([a], [b]) => a.localeCompare(b))
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.map(([name, count]) => `${name}: ${count}`)
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.join(", ");
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console.log(`${result.name}@${result.version}`);
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console.log(`tarball: ${result.filename}`);
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console.log(`files: ${result.files.length} (${topLevelSummary})`);
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console.log(`package size: ${formatBytes(result.size)}`);
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console.log(`unpacked size: ${formatBytes(result.unpackedSize)}`);
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function formatBytes(bytes: number): string {
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if (bytes < 1024) {
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return `${bytes} B`;
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}
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const kib = bytes / 1024;
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if (kib < 1024) {
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return `${kib.toFixed(1)} KiB`;
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}
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return `${(kib / 1024).toFixed(1)} MiB`;
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}
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