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| 1 | +#!/usr/bin/env node |
| 2 | +import { copyFileSync, existsSync, mkdirSync, readdirSync, statSync } from "node:fs"; |
| 3 | +import { createRequire } from "node:module"; |
| 4 | +import { dirname, join, resolve } from "node:path"; |
| 5 | +import { fileURLToPath } from "node:url"; |
| 6 | + |
| 7 | +function main() { |
| 8 | + // Resolve the path to snarkjs browser bundle |
| 9 | + // Resolve snarkjs package base |
| 10 | + let baseDir; |
| 11 | + try { |
| 12 | + // Prefer import.meta.resolve for pure ESM; fallback to createRequire for older Node versions |
| 13 | + let pkgJsonPath; |
| 14 | + if (typeof import.meta.resolve === "function") { |
| 15 | + const resolvedUrl = import.meta.resolve("snarkjs/package.json"); |
| 16 | + pkgJsonPath = fileURLToPath(resolvedUrl); |
| 17 | + } else { |
| 18 | + const require = createRequire(import.meta.url); |
| 19 | + pkgJsonPath = require.resolve("snarkjs/package.json"); |
| 20 | + } |
| 21 | + baseDir = dirname(pkgJsonPath); |
| 22 | + } catch (e) { |
| 23 | + console.warn("[copy-snarkjs] snarkjs not installed yet; skipping copy", e); |
| 24 | + return; // don't fail install, maybe another step will install it |
| 25 | + } |
| 26 | + const candidateRelPaths = ["dist/web/snarkjs.min.js", "dist/snarkjs.min.js", "build/snarkjs.min.js"]; |
| 27 | + let src; |
| 28 | + for (const rel of candidateRelPaths) { |
| 29 | + const cand = join(baseDir, rel); |
| 30 | + if (existsSync(cand)) { |
| 31 | + src = cand; |
| 32 | + break; |
| 33 | + } |
| 34 | + } |
| 35 | + if (!src) { |
| 36 | + // Last resort: scan first level dirs for snarkjs.min.js |
| 37 | + try { |
| 38 | + const entries = readdirSync(baseDir, { withFileTypes: true }); |
| 39 | + for (const ent of entries) { |
| 40 | + if (ent.isDirectory()) { |
| 41 | + const cand = join(baseDir, ent.name, "snarkjs.min.js"); |
| 42 | + if (existsSync(cand)) { |
| 43 | + src = cand; |
| 44 | + break; |
| 45 | + } |
| 46 | + } |
| 47 | + } |
| 48 | + } catch (e) { |
| 49 | + console.warn("[copy-snarkjs] Error scanning for snarkjs.min.js", e); |
| 50 | + } |
| 51 | + } |
| 52 | + if (!src) { |
| 53 | + console.warn( |
| 54 | + "[copy-snarkjs] Could not locate snarkjs.min.js inside package; looked in: " + candidateRelPaths.join(", "), |
| 55 | + ); |
| 56 | + return; |
| 57 | + } |
| 58 | + const __filename = fileURLToPath(import.meta.url); |
| 59 | + const __dirname = dirname(__filename); |
| 60 | + const destDir = resolve(__dirname, "../public"); |
| 61 | + const dest = resolve(destDir, "snarkjs.min.js"); |
| 62 | + |
| 63 | + try { |
| 64 | + statSync(destDir); |
| 65 | + } catch { |
| 66 | + mkdirSync(destDir, { recursive: true }); |
| 67 | + } |
| 68 | + if (existsSync(dest)) { |
| 69 | + try { |
| 70 | + const srcStat = statSync(src); |
| 71 | + const destStat = statSync(dest); |
| 72 | + if (destStat.mtimeMs >= srcStat.mtimeMs) { |
| 73 | + console.log("[copy-snarkjs] Existing snarkjs.min.js is up to date"); |
| 74 | + return; |
| 75 | + } |
| 76 | + } catch (e) { |
| 77 | + console.warn("[copy-snarkjs] Error checking existing snarkjs.min.js", e); |
| 78 | + } |
| 79 | + } |
| 80 | + copyFileSync(src, dest); |
| 81 | + console.log(`[copy-snarkjs] Copied ${src} -> ${dest}`); |
| 82 | +} |
| 83 | + |
| 84 | +main(); |
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