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Node.js v17 で webpack error

Last updated at Posted at 2021-11-10

digital envelope routines::unsupported

Node.js が v17 になって以降(2021年10月19日) 、webpack (v5) で次のようなエラーがでるようになりました。

Webpack in development mode
[webpack-cli] Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:67:19)
    at Object.createHash (node:crypto:130:10)
...
<anonymous>:6:1) {
  opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
  library: 'digital envelope routines',
  reason: 'unsupported',
  code: 'ERR_OSSL_EVP_UNSUPPORTED'

OpenSSL 3.0 のハッシュ関数に関する問題のようですが、webpack.config.js に「output.hashFunction: "xxhash64"」を追加すると、とりあえずビルドできます。

webpack.config.js
const config = {
...
	output: {
		hashFunction: "xxhash64",
...
	},

別の方法として、node の実行時オプションに「--openssl-legacy-provider」を追加してもOKです。この場合は、次のように環境変数を定義するのが簡単です。

export NODE_OPTIONS=--openssl-legacy-provider

なお、この問題は webpack の v6 で修正されるようです。

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