１．error

# npm run dev:buyer

> privateinvoice@0.0.1 dev:buyer
> npx dotenv -e .buyer.env node index.js
　　：
Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:67:19)
    at Object.createHash (node:crypto:133:10)
    at hash160 (/opt/PrivateInvoice1/520r/node_modules/hdkey/lib/hdkey.js:242:17)
    at HDKey.set (/opt/PrivateInvoice1/520r/node_modules/hdkey/lib/hdkey.js:39:24)
    at HDKey.fromMasterSeed (/opt/PrivateInvoice1/520r/node_modules/hdkey/lib/hdkey.js:187:20)
    at _callee$ (/opt/PrivateInvoice1/520r/node_modules/@sidetree/crypto/dist/crypto.cjs.development.js:869:26)
    at tryCatch (/opt/PrivateInvoice1/520r/node_modules/@sidetree/crypto/dist/crypto.cjs.development.js:132:40)
    at Generator.invoke [as _invoke] (/opt/PrivateInvoice1/520r/node_modules/@sidetree/crypto/dist/crypto.cjs.development.js:363:22)
    at Generator.next (/opt/PrivateInvoice1/520r/node_modules/@sidetree/crypto/dist/crypto.cjs.development.js:188:21)
    at asyncGeneratorStep (/opt/PrivateInvoice1/520r/node_modules/@sidetree/crypto/dist/crypto.cjs.development.js:14:24)
    at _next (/opt/PrivateInvoice1/520r/node_modules/@sidetree/crypto/dist/crypto.cjs.development.js:36:9) {
  opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
  library: 'digital envelope routines',
  reason: 'unsupported',
  code: 'ERR_OSSL_EVP_UNSUPPORTED'
}

Node.js v18.2.0
#

２．対策
・package.jsonのscriptsに以下を追加する
　NODE_OPTIONS=–openssl-legacy-provider　

３．package.jsonの修正
(1) 変更前

  "scripts": {
    "dev:seller": "npx dotenv -e .seller.env node index.js",
    "dev:buyer": "npx dotenv -e .buyer.env node index.js",
  },

(2) 変更後

  "scripts": {
    "dev:seller": "NODE_OPTIONS=--openssl-legacy-provider npx dotenv -e .seller.env node index.js",
    "dev:buyer": "NODE_OPTIONS=--openssl-legacy-provider npx dotenv -e .buyer.env node index.js",
  },