Estructura inicial del proyecto

backend/node_modules/@azure/msal-common/src/crypto/JoseHeader.ts

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+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+import {
+    JoseHeaderErrorCodes,
+    createJoseHeaderError,
+} from "../error/JoseHeaderError.js";
+import { JsonWebTokenTypes } from "../utils/Constants.js";
+
+export type JoseHeaderOptions = {
+    typ?: JsonWebTokenTypes;
+    alg?: string;
+    kid?: string;
+};
+
+/** @internal */
+export class JoseHeader {
+    public typ?: JsonWebTokenTypes;
+    public alg?: string;
+    public kid?: string;
+
+    constructor(options: JoseHeaderOptions) {
+        this.typ = options.typ;
+        this.alg = options.alg;
+        this.kid = options.kid;
+    }
+
+    /**
+     * Builds SignedHttpRequest formatted JOSE Header from the
+     * JOSE Header options provided or previously set on the object and returns
+     * the stringified header object.
+     * Throws if keyId or algorithm aren't provided since they are required for Access Token Binding.
+     * @param shrHeaderOptions
+     * @returns
+     */
+    static getShrHeaderString(shrHeaderOptions: JoseHeaderOptions): string {
+        // KeyID is required on the SHR header
+        if (!shrHeaderOptions.kid) {
+            throw createJoseHeaderError(JoseHeaderErrorCodes.missingKidError);
+        }
+
+        // Alg is required on the SHR header
+        if (!shrHeaderOptions.alg) {
+            throw createJoseHeaderError(JoseHeaderErrorCodes.missingAlgError);
+        }
+
+        const shrHeader = new JoseHeader({
+            // Access Token PoP headers must have type pop, but the type header can be overriden for special cases
+            typ: shrHeaderOptions.typ || JsonWebTokenTypes.Pop,
+            kid: shrHeaderOptions.kid,
+            alg: shrHeaderOptions.alg,
+        });
+
+        return JSON.stringify(shrHeader);
+    }
+}