Add extracted source directory and README navigation

extracted-source/node_modules/@azure/identity/dist/esm/util/logging.js

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+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+import { createClientLogger } from "@azure/logger";
+/**
+ * The AzureLogger used for all clients within the identity package
+ */
+export const logger = createClientLogger("identity");
+/**
+ * Separates a list of environment variable names into a plain object with two arrays: an array of missing environment variables and another array with assigned environment variables.
+ * @param supportedEnvVars - List of environment variable names
+ */
+export function processEnvVars(supportedEnvVars) {
+    return supportedEnvVars.reduce((acc, envVariable) => {
+        if (process.env[envVariable]) {
+            acc.assigned.push(envVariable);
+        }
+        else {
+            acc.missing.push(envVariable);
+        }
+        return acc;
+    }, { missing: [], assigned: [] });
+}
+/**
+ * Based on a given list of environment variable names,
+ * logs the environment variables currently assigned during the usage of a credential that goes by the given name.
+ * @param credentialName - Name of the credential in use
+ * @param supportedEnvVars - List of environment variables supported by that credential
+ */
+export function logEnvVars(credentialName, supportedEnvVars) {
+    const { assigned } = processEnvVars(supportedEnvVars);
+    logger.info(`${credentialName} => Found the following environment variables: ${assigned.join(", ")}`);
+}
+/**
+ * Formatting the success event on the credentials
+ */
+export function formatSuccess(scope) {
+    return `SUCCESS. Scopes: ${Array.isArray(scope) ? scope.join(", ") : scope}.`;
+}
+/**
+ * Formatting the success event on the credentials
+ */
+export function formatError(scope, error) {
+    let message = "ERROR.";
+    if (scope === null || scope === void 0 ? void 0 : scope.length) {
+        message += ` Scopes: ${Array.isArray(scope) ? scope.join(", ") : scope}.`;
+    }
+    return `${message} Error message: ${typeof error === "string" ? error : error.message}.`;
+}
+/**
+ * Generates a CredentialLoggerInstance.
+ *
+ * It logs with the format:
+ *
+ *   `[title] => [message]`
+ *
+ */
+export function credentialLoggerInstance(title, parent, log = logger) {
+    const fullTitle = parent ? `${parent.fullTitle} ${title}` : title;
+    function info(message) {
+        log.info(`${fullTitle} =>`, message);
+    }
+    function warning(message) {
+        log.warning(`${fullTitle} =>`, message);
+    }
+    function verbose(message) {
+        log.verbose(`${fullTitle} =>`, message);
+    }
+    function error(message) {
+        log.error(`${fullTitle} =>`, message);
+    }
+    return {
+        title,
+        fullTitle,
+        info,
+        warning,
+        verbose,
+        error,
+    };
+}
+/**
+ * Generates a CredentialLogger, which is a logger declared at the credential's constructor, and used at any point in the credential.
+ * It has all the properties of a CredentialLoggerInstance, plus other logger instances, one per method.
+ *
+ * It logs with the format:
+ *
+ *   `[title] => [message]`
+ *   `[title] => getToken() => [message]`
+ *
+ */
+export function credentialLogger(title, log = logger) {
+    const credLogger = credentialLoggerInstance(title, undefined, log);
+    return Object.assign(Object.assign({}, credLogger), { parent: log, getToken: credentialLoggerInstance("=> getToken()", credLogger, log) });
+}
+//# sourceMappingURL=logging.js.map