初始化环境文件

node_modules/@aws-crypto/sha1-browser/README.md

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+# @aws-crypto/sha1-browser
+
+SHA1 wrapper for browsers that prefers `window.crypto.subtle`.
+
+SHA1 is **NOT** a cryptographically secure algorithm.
+It should _only_ be used for non cryptographic functions like checksums.
+
+## Usage
+
+```
+import {Sha1} from '@aws-crypto/sha1-browser'
+
+const hash = new Sha1();
+hash.update('some data');
+const result = await hash.digest();
+
+```
+
+## Test
+
+`npm test`