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server/node_modules/@opentelemetry/api/build/esnext/context/context.js

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+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/** Get a key to uniquely identify a context value */
+export function createContextKey(description) {
+    // The specification states that for the same input, multiple calls should
+    // return different keys. Due to the nature of the JS dependency management
+    // system, this creates problems where multiple versions of some package
+    // could hold different keys for the same property.
+    //
+    // Therefore, we use Symbol.for which returns the same key for the same input.
+    return Symbol.for(description);
+}
+class BaseContext {
+    /**
+     * Construct a new context which inherits values from an optional parent context.
+     *
+     * @param parentContext a context from which to inherit values
+     */
+    constructor(parentContext) {
+        // for minification
+        const self = this;
+        self._currentContext = parentContext ? new Map(parentContext) : new Map();
+        self.getValue = (key) => self._currentContext.get(key);
+        self.setValue = (key, value) => {
+            const context = new BaseContext(self._currentContext);
+            context._currentContext.set(key, value);
+            return context;
+        };
+        self.deleteValue = (key) => {
+            const context = new BaseContext(self._currentContext);
+            context._currentContext.delete(key);
+            return context;
+        };
+    }
+}
+/** The root context is used as the default parent context when there is no active context */
+export const ROOT_CONTEXT = new BaseContext();
+//# sourceMappingURL=context.js.map