include node_modules so release .zip is deployable

node_modules/@smithy/signature-v4/dist-cjs/credentialDerivation.js

@@ -0,0 +1,39 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.clearCredentialCache = exports.getSigningKey = exports.createScope = void 0;
+const util_hex_encoding_1 = require("@smithy/util-hex-encoding");
+const util_utf8_1 = require("@smithy/util-utf8");
+const constants_1 = require("./constants");
+const signingKeyCache = {};
+const cacheQueue = [];
+const createScope = (shortDate, region, service) => `${shortDate}/${region}/${service}/${constants_1.KEY_TYPE_IDENTIFIER}`;
+exports.createScope = createScope;
+const getSigningKey = async (sha256Constructor, credentials, shortDate, region, service) => {
+    const credsHash = await hmac(sha256Constructor, credentials.secretAccessKey, credentials.accessKeyId);
+    const cacheKey = `${shortDate}:${region}:${service}:${(0, util_hex_encoding_1.toHex)(credsHash)}:${credentials.sessionToken}`;
+    if (cacheKey in signingKeyCache) {
+        return signingKeyCache[cacheKey];
+    }
+    cacheQueue.push(cacheKey);
+    while (cacheQueue.length > constants_1.MAX_CACHE_SIZE) {
+        delete signingKeyCache[cacheQueue.shift()];
+    }
+    let key = `AWS4${credentials.secretAccessKey}`;
+    for (const signable of [shortDate, region, service, constants_1.KEY_TYPE_IDENTIFIER]) {
+        key = await hmac(sha256Constructor, key, signable);
+    }
+    return (signingKeyCache[cacheKey] = key);
+};
+exports.getSigningKey = getSigningKey;
+const clearCredentialCache = () => {
+    cacheQueue.length = 0;
+    Object.keys(signingKeyCache).forEach((cacheKey) => {
+        delete signingKeyCache[cacheKey];
+    });
+};
+exports.clearCredentialCache = clearCredentialCache;
+const hmac = (ctor, secret, data) => {
+    const hash = new ctor(secret);
+    hash.update((0, util_utf8_1.toUint8Array)(data));
+    return hash.digest();
+};