Convert pack wasm to ESM (#463)

* Convert pack wasm to ESM

* Cleanup clean scripts

* Adjust

scripts/build-js.sh

@@ -5,5 +5,5 @@
 
 set -e
 
-./scripts/clean-js.sh
+yarn polkadot-dev-clean-build
 yarn polkadot-dev-build-ts

scripts/build-wasm.sh

@@ -32,7 +32,7 @@ echo "*** Optimising WASM output"
 
 # convert wasm to base64 structure
 echo "*** Packing WASM into baseX"
-node ../scripts/pack-wasm-base.cjs
+node ../scripts/pack-wasm-base.mjs
 
 # build asmjs version from the input (optimised) WASM
 echo "*** Building asm.js version"

scripts/clean-js.sh

@@ -1,10 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2019-2023 @polkadot/wasm authors & contributors
-# This software may be modified and distributed under the terms
-# of the Apache-2.0 license. See the LICENSE file for details.
-
-set -e
-
-# cleanup old
-echo "*** Cleaning old builds"
-rm -rf build packages/*/build*

scripts/clean.sh

@@ -5,11 +5,8 @@
 
 set -e
 
-./scripts/clean-js.sh
+yarn polkadot-dev-clean-build
 
-echo "*** Cleaning wasm"
 cd packages/wasm-crypto
-
 cargo clean
-
 cd ../..

scripts/pack-wasm-base.mjs

@@ -1,22 +1,22 @@
 // Copyright 2019-2023 @polkadot/wasm authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-const fflate = require('fflate/node');
-const fs = require('fs');
-const mkdirp = require('mkdirp');
-const { formatNumber } = require('@polkadot/util');
+import { zlibSync } from 'fflate/node';
+import fs from 'fs';
+
+import { formatNumber } from '@polkadot/util';
 
 const DIR_DENO = `./${process.env.PKG_NAME}-wasm/build-deno/deno`;
 const DIR_CJS = `./${process.env.PKG_NAME}-wasm/build/cjs`;
 const HDR = `// Copyright 2019-${new Date().getFullYear()} @polkadot/${process.env.PKG_NAME}-wasm authors & contributors\n// SPDX-License-Identifier: Apache-2.0\n\n// Generated as part of the build, do not edit\n`;
 
 const data = fs.readFileSync(`./${process.env.PKG_NAME}/build-wasm/wasm_opt.wasm`);
-const compressed = Buffer.from(fflate.zlibSync(data, { level: 9 }));
+const compressed = Buffer.from(zlibSync(data, { level: 9 }));
 const base64 = compressed.toString('base64');
 
 console.log(`*** Compressed WASM: in=${formatNumber(data.length)}, out=${formatNumber(compressed.length)}, opt=${(100 * compressed.length / data.length).toFixed(2)}%, base64=${formatNumber(base64.length)}`);
 
-mkdirp.sync(DIR_DENO);
+fs.mkdirSync(DIR_DENO, { recursive: true });
 
 fs.writeFileSync(`${DIR_CJS}/bytes.js`, `${HDR}
 const lenIn = ${compressed.length};